Description
Dynamic BrakingResistor Calculator www.abpowerflex.com Important User Information Solid state equipment has operational characteristics differing from those of electromechanical equipment. “Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls” (Publication SGI-1.1 available from your local Rockwell Automation Sales Office or online at http://www.ab.com/ manuals/gi) describes some important differences between solid state equipment and hard-wired electromechanical devices. Because of this difference, and also because of the wide variety of uses for solid state equipment, all persons responsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable. In no event will the Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment. The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables and requirements associated with any particular installation, the Rockwell Automation, Inc. cannot assume responsibility or liability for actual use based on the examples and diagrams. No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits, equipment, or software described in this manual. Reproduction of the contents of this manual, in whole or in part, without written permission of the Rockwell Automation, Inc. is prohibited. Throughout this manual we use notes to make you aware of safety considerations. ! ATTENTION: Identifies information about practices or circumstances that can lead to personal injury or death, property damage, or economic loss. Attentions help you: • • • identify a hazard avoid the hazard recognize the consequences Important: Identifies information that is especially important for successful application and understanding of the product. Shock Hazard labels may be located on or inside the drive to alert people that dangerous voltage may be present. DriveExplorer, DriveTools32, and SCANport are trademarks of Rockwell Automation. PLC is a registered trademark of Rockwell Automation. ControlNet is a trademark of ControlNet International, Ltd. DeviceNet is a trademark of the Open DeviceNet Vendor Association. Table of Contents Section 1 Understanding How Dynamic Braking Works This section provides an overview of the components required to do Dynamic Braking and their functionality. How Dynamic Braking Works . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Dynamic Brake Components . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Section 2 Determining Dynamic Brake Requirements This section steps you through the calculations necessary to determine the amount of Dynamic Braking required for your application. How to Determine Dynamic Brake Requirements . . . . . . . . . . . 2-1 Determine Values of Equation Variables . . . . . . . . . . . . . . . . . . 2-4 Example Calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9 Section 3 Evaluating the Internal Resistor This section steps you through the process to determine whether or not the available PowerFlex internal resistors are adequate for your application. Evaluating the Capability of the Internal Dynamic Brake Resistor. . . . . . . . . . . . . . . . . . . . . . 3-1 PowerFlex 70 Power Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 PowerFlex 700 Power Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8 Section 4 Selecting An External Resistor This section steps you through the process of selecting an external resistor when the internal resistors prove to be insufficient for your application. How to Select an External Dynamic Brake Resistor . . . . . . . . . 4-1 Appendix A Minimum Dynamic Brake Resistance Section 1 Understanding How Dynamic Braking Works How Dynamic Braking Works When an induction motor’s rotor is turning slower than the synchronous speed set by the drive’s output power, the motor is transforming electrical energy obtained from the drive into mechanical energy available at the drive shaft of the motor. This process is referred to as motoring. When the rotor is turning faster than the synchronous speed set by the drive’s output power, the motor is transforming mechanical energy available at the drive shaft of the motor into electrical energy that can be transferred back to the drive. This process is referred to as regeneration. Most AC PWM drives convert AC power from the fixed frequency utility grid into DC power by means of a diode rectifier bridge or controlled SCR bridge before it is inverted into variable frequency AC power. Diode and SCR bridges are cost effective, but can only handle power in the motoring direction. Therefore, if the motor is regenerating, the bridge cannot conduct the necessary negative DC current, the DC bus voltage will increase and cause an overvoltage fault at the drive. More complex bridge configurations use SCRs or transistors that can transform DC regenerative electrical power into fixed frequency utility electrical energy. This process is known as line regeneration. A more cost effective solution can be provided by allowing the drive to feed the regenerated electrical power to a resistor which transforms it into thermal energy. This process is referred to as dynamic braking. 1-2 Understanding How Dynamic Braking Works Dynamic Brake Components A Dynamic Brake consists of a Chopper (the chopper transistor and related control components are built into PowerFlex drives) and a Dynamic Brake Resistor. Figure 1.1 shows a simplified Dynamic Braking schematic. Figure 1.1 Simplified Dynamic Brake Schematic + DC Bus FWD Voltage Divider Dynamic Brake Resistor To Voltage Control Signal Common To Voltage Dividers Chopper Transistor Voltage Control Chopper Transistor FWD Voltage Divider To Voltage Control – DC Bus Chopper The Chopper is the Dynamic Braking circuitry that senses rising DC bus voltage and shunts the excess energy to the Dynamic Brake Resistor. A Chopper contains three significant power components: The Chopper Transistor is an Isolated Gate Bipolar Transistor (IGBT). The Chopper Transistor is either ON or OFF, connecting the Dynamic Brake Resistor to the DC bus and dissipating power, or isolating the resistor from the DC bus. The most important rating is the collector current rating of the Chopper Transistor that helps to determine the minimum resistance value used for the Dynamic Brake Resistor. Understanding How Dynamic Braking Works 1-3 Chopper Transistor Voltage Control regulates the voltage of the DC bus during regeneration. The average values of DC bus voltages are: Drive Input Voltage 208 240 400 480 575 600 600 (Frame 5 & 6) 690 Transistor Turn-On Voltage 375V DC 375V DC 750V DC 750V DC 937.5V DC 937.5V DC 1076V DC 1076V DC Maximum Power Calculation Voltage 395V DC 395V DC 790V DC 790V DC 987V DC 987V DC 1135V DC 1135V DC Voltage dividers reduce the DC bus voltage to a value that is usable in signal circuit isolation and control. The DC bus feedback voltage from the voltage dividers is compared to a reference voltage to actuate the Chopper Transistor. The Freewheel Diode (FWD), in parallel with the Dynamic Brake Resistor, allows any magnetic energy stored in the parasitic inductance of that circuit to be safely dissipated during turn off of the Chopper Transistor. Resistor The Resistor dissipates the regenerated energy in the form of heat. The PowerFlex Family of Drives can use either the internal dynamic brake resistor option or an externally mounted dynamic brake resistor wired to the drive. Wiring Frames 0-4 Wire to the DB resistor should be no longer than 10 feet from the drive terminals. Wire should be twisted to minimize inductance. Frames 5-6 Wire to the DB resistor should be no longer than 100 feet from the drive terminals. Section 2 Determining Dynamic Brake Requirements How to Determine Dynamic Brake Requirements When a drive is consistently operating in the regenerative mode of operation, serious consideration should be given to equipment that will transform the electrical energy back to the fixed frequency utility grid. As a general rule, Dynamic Braking can be used when the need to dissipate regenerative energy is on an occasional or periodic basis. In general, the motor power rating, speed, torque, and details regarding the regenerative mode of operation will be needed in order to estimate what Dynamic Brake Resistor value is needed. The Peak Regenerative Power and Average Regenerative Power required for the application must be calculated in order to determine the resistor needed for the application. Once these values are determined, the resistors can be chosen. If an internal resistor is chosen, the resistor must be capable of handling the regenerated power or the drive will trip. If an external resistor is chosen, in addition to the power capabilities, the resistance must also be less than the application maximum and greater than the drive minimum or the drive will trip. The power rating of the Dynamic Brake Resistor is estimated by applying what is known about the drive’s motoring and regenerating modes of operation. The Average Power Dissipation must be estimated and the power rating of the Dynamic Brake Resistor chosen to be greater than that average. If the Dynamic Brake Resistor has a large thermodynamic heat capacity, then the resistor element will be able to absorb a large amount of energy without the temperature of the resistor element exceeding the operational temperature rating. Thermal time constants in the order of 50 seconds and higher satisfy the criteria of large heat capacities for these applications. If a resistor has a small heat capacity (defined as thermal time constants less than 5 seconds) the temperature of the resistor element could exceed its maximum. Peak Regenerative Power can be calculated as: • Horsepower (English units) • Watts (The International System of Units, SI) • Per Unit System (pu) which is relative to a value The final number must be in watts of power to estimate the resistance value of the Dynamic Brake Resistor. The following calculations are demonstrated in SI units. 2-2 Determining Dynamic Brake Requirements Gather the Following Information • Power rating from motor nameplate in watts, kilowatts, or horsepower • Speed rating from motor nameplate in rpm or rps (radians per second) • Required decel time (per Figure 2.1, t3 – t2). This time is a process requirement and must be within the capabilities of the drive programming. • Motor inertia and load inertia in kg-m2 or WK2 in lb.-ft.2 • Gear ratio (GR) if a gear is present between the motor and load • Motor shaft speed, torque, and power profile of the drive application Figure 2.1 shows typical application profiles for speed, torque and power. The examples are for cyclical application that is periodic over t4 seconds. The following variables are defined for Figure 2.1: ω(t) N 2πN = Motor shaft speed in radians per second (rps) ω = ---------60 = Motor shaft speed in Revolutions Per Minute (RPM) T(t) = Motor shaft torque in Newton-meters 1.0 lb.-ft. = 1.355818 N-m P(t) = Motor shaft power in watts 1.0 HP = 746 watts ωb Rad = Rated angular rotational speed --------s Rad = Angular rotational speed less than ωb (can equal 0) --------s = Motor shaft peak regenerative power in watts ωo -Pb Determining Dynamic Brake Requirements 2-3 Figure 2.1 Application Speed, Torque and Power Profiles Speed ω(t) ωb ωo 0 t1 t2 t3 t4 t1 + t4 t t1 t2 t3 t4 t1 + t4 t t1 t2 t3 t4 t1 + t4 t t1 t2 t3 t4 t1 + t4 t Torque T(t) 0 Power P(t) 0 -Pb Drive Rated Regen Power Prg 0 2-4 Determining Dynamic Brake Requirements Determine Values of Equation Variables Step 1 Total Inertia 2 J T = J m + ( GR × J L ) JT = Total inertia reflected to the motor shaft (kg-m2 or WK2 in lb.-ft.2) Jm = Motor inertia (kg-m2 or WK2 in lb.-ft.2) GR = Gear ratio for any gear between motor and load (dimensionless) Load Speed GR = ----------------------------Motor Speed If the gear ratio is 2:1 then GR = 1-- = 0.5 2 JL = Load inertia (kg-m2 or WK2 in lb.-ft.2) 1.0 lb.-ft.2 = 0.04214011 kg-m2 Calculate Total Inertia: J T = [ oooooooooo ] + ( oooooooooo × oooooooooo ) Record Total Inertia: JT = Determining Dynamic Brake Requirements Step 2 2-5 Peak Braking Power JT [ ωb ( ωb – ωo ) ] P b = ---------------------------------------( t3 – t2 ) Pb = Peak braking power (watts) 1.0 HP = 746 watts JT = Total inertia reflected to the motor shaft (kg-m2) 2πN Rad = Rated angular rotational speed --------- = -----------b60 s = Angular rotational speed, Rad less than rated speed down to zero --------s ωb ωo Nb = Rated motor speed (RPM) t3 – t2 = Deceleration time from ωb to ωo (seconds) Calculate Peak Braking Power: [ ooooooooo ] × [ ooooooooo ] × ( ooooooooo – ooooooooo )P b = ---------------------------------------------------------------------------------------------------------------------------------------------( ooooooooo – ooooooooo ) Record Peak Braking Power: Pb = Compare the peak braking power (Pb) to the drive rated regenerative power (Prg). If the peak braking power is greater than the drive rated regenerative power, the decel time will have to be increased so that the drive does not enter current limit. Drive rated regenerative power (Prg) is determined by: 2 ----P rg = V R Prg = Drive rated regenerative power V = DC bus regulation voltage from R = Minimum brake resistance from 2 ooooooooo ] P rg = [--------------------------------( ooooooooo ) Record Rated Regenerative Power: Prg = 2-6 Determining Dynamic Brake Requirements For the purposes of this document, it is assumed that the motor used in the application is capable of producing the required regenerative torque and power. Step 3 Minimum Power Requirements for the Dynamic Brake Resistors It is assumed that the application exhibits a periodic function of acceleration and deceleration. If (t3 – t2) equals the time in seconds necessary for deceleration from rated speed to ωo speed, and t4 is the time in seconds before the process repeats itself, then the average duty cycle is (t3 – t2)/t4. The power as a function of time is a linearly decreasing function from a value equal to the peak regenerative power to some lesser value after (t3 – t2) seconds have elapsed. The average power regenerated over the interval of (t3 – t2) seconds is: P b ( ω b + ω o ) ----- × -----------------------ωb 2 Pav = Average dynamic brake resister dissipation (watts) t3 – t2 = Deceleration time from ωb to ωo (seconds) t4 = Total cycle time or period of process (seconds) Pb = Peak braking power (watts) ωb Rad = Rated angular rotational speed --------s ωo = Angular rotational speed, Rad less than rated speed down to zero --------s Important: If application cycle time exceeds 900 seconds, for calculation purposes t4 will be equal to 900 plus the decel time. This is because the resistor will have cooled completely after 15 minutes. If t4 > 900 then t4 = 900 + (t3 - t2). The Average Power in watts regenerated over the period t4 is: ( t3 – t2 ) Pb ( ωb + ωo ) P av = ------------------ ----- -----------------------t4 ωb 2 Determining Dynamic Brake Requirements 2-7 Calculate Average Power in watts regenerated over the period t4: ( oooooo – oooooo ) [ oooooo ] ( oooooo + oooooo ) P av = ----------------------------------------------- × ----------------------- × ----------------------------------------------[ oooooo ] 2 [ oooooo ] Record Average Power in watts regenerated over the period t4: Pav Step 4 = Percent Average Load of the Internal Dynamic Brake Resistor Skip this calculation if an external dynamic brake resistor will be used. P av AL = -------- × 100 P db AL = Average load in percent of dynamic brake resistor. Important: The value of AL should not exceed 100%. Pav = Average dynamic brake resistor dissipation calculated in Step 3 (watts) Pdb = Steady state power dissipation capacity of dynamic brake resistors obtained from (watts) Calculate Percent Average Load of the dynamic brake resistor: [ oooooooooo ] AL = ----------------------------------- × 100 [ oooooooooo ] Record Percent Average Load of the dynamic brake resistor: AL = The calculation of AL is the Dynamic Brake Resistor load expressed as a percent. Pdb is the sum of the Dynamic Brake dissipation capacity and is obtained from . This will give a data point for a line to be drawn on one the curves provided in Section 3. 2-8 Determining Dynamic Brake Requirements Step 5 Percent Peak Load of the Internal Dynamic Brake Resistor Skip this calculation if an external dynamic brake resistor will be used. Pb PL = -------- × 100 P db PL = Peak load in percent of dynamic brake resistor Pav = Peak braking power calculated in Step 2 (watts) Pdb = Steady state power dissipation capacity of dynamic brake resistors obtained from (watts) Calculate Percent Peak Load of the dynamic brake resistor: [ oooooooooo ] PL = ----------------------------------- × 100 [ oooooooooo ] Record Percent Average Load of the dynamic brake resistor: PL = The calculation of PL in percent gives the percentage of the instantaneous power dissipated by the Dynamic Brake Resistors relative to the steady state power dissipation capacity of the resistors. This will give a data point to be drawn on one of the curves provided in Section 3. Determining Dynamic Brake Requirements 2-9 Example Calculation A 10 HP, 4 Pole, 480 Volt motor and drive is accelerating and decelerating as depicted in Figure 2.1. • Cycle period t4 is 40 seconds • Rated speed is 1785 RPM and is to be decelerated to 0 speed in 15.0 seconds • Motor load can be considered purely as inertia, and all power expended or absorbed by the motor is absorbed by the motor and load inertia • Load inertia is 4.0 lb.-ft.2 and is directly coupled to the motor • Motor rotor inertia is 2.2 lb.-ft.2 • A PowerFlex 70, 10 HP 480V Normal Duty rating is chosen. Calculate the necessary values to choose an acceptable Dynamic Brake. Rated Power = 10 HP × 746 watts = 7.46 kW This information was given and must be known before the calculation process begins. This can be given in HP, but must be converted to watts before it can be used in the equations. 1785 Rad Rated Speed = ω b = 1785 RPM = 2π × ---------- = 186.98 ------------------------60 s 0 0 Rad Lower Speed = ω o = 0 RPM = 2π × ----- = ------------60 s This information was given and must be known before the calculation process begins. This can be given in RPM, but must be converted to radians per second before it can be used in the equations. otal Inertia = J T = 6.2 ( 12.4 ) lb.-ft. 2 = 0.261 kg-m This value can be in lb.-ft.2 or Wk2, but must be converted into kg-m2 before it can be used in the equations. Deceleration Time = ( t 3 – t 2 ) = 15 seconds Period of Cycle = t 4 = 40 seconds 2-10 Determining Dynamic Brake Requirements V d = 790 Volts This was known because the drive is rated at 480 Volts rms. If the drive were rated 230 Volts rms, then Vd = 395 Volts. All of the preceding data and calculations were made from knowledge of the application under consideration. The total inertia was given and did not need further calculations as outlined in Step 1. JT [ ωb ( ωb – ωo ) ] Peak Braking Power = P b = ---------------------------------------( t3 – t2 ) 0.261 [ 186.92 ( 186.92 – 0 ) ]- = 607.9 watts P b = -----------------------------------------------------------15 Note that this is 8.1% of rated power and is less than the maximum drive limit of 150% current limit. This calculation is the result of Step 2 and determines the peak power that must be dissipated by the Dynamic Brake Resistor. ( t3 – t2 ) Pb ( ωb + ωo ) Average Braking Power = P av = ------------------ ----- -----------------------2 t4 ωb 15 607.9 186.92 + 0 P av = ⎛⎝ -----⎞⎠ ⎛⎝ ------------⎞⎠ ⎛⎝ ------------------------⎞⎠ = 113.9 watts 40 2 186.92 This is the result of calculating the average power dissipation as outlined in Step 4. Verify that the sum of the power ratings of the Dynamic Brake Resistors chosen in Step 3 is greater than the value calculated in Step 4. For an internal resistor, refer to to determine the continuous power rating of the resistor in the given drive you are using. Skip this calculation if an external dynamic brake resistor will be used. In this case, a 10 HP PowerFlex 70 drive has an internal resistor rated for 40 continuous watts. Because Pav = 114.1 watts, and is greater than the resistor’s continuous watts rating, the drive will eventually trip on a Resistor Over Heated fault. Calculate the minimum cycle time (in seconds) using the formula in Section 3, number 2 B. ⎛ 607.9 ⎞ -----------⎝ 2 × 15⎠ ----------------------------- = 113.9 seconds 40 Recalculate the average power dissipation. 15 607.9 186.92 + 0 P av = ⎛ ------------⎞ ⎛ ------------⎞ ⎛ ------------------------⎞ = 40 watts ⎝ 114.1⎠ ⎝ 2 ⎠ ⎝ 186.92 ⎠ Determining Dynamic Brake Requirements 2-11 If the cycle cannot be adjusted, the decel time must be extended or the system inertia lowered to reduce the average load on the resistor. Another option is to use an external resistor. Calculate the Percent Average Load. You will need this number to calculate the Percent Peak Load. P av Percent Average Load = AL = 100 × -------P db AL = 100 × 40 ----- = 100% 40 Important: The value of AL should not exceed 100%. This is the result of the calculation outlined in Step 5. Record this value on page 3-1. Pb Percent Peak Load = PL = 100 × -------P db 607.9 PL = 100 × ------------ = 1520% 40 This is the result of the calculation outlined in Step 5. Record this value on page 3-1. Now that the values of AL and PL have been calculated, they can be used to determine whether an internal or external resistor can be used. Since the internal resistor package offers significant cost and space advantages, it will be evaluated first. Section 3 Evaluating the Internal Resistor Evaluating the Capability of the Internal Dynamic Brake Resistor To investigate the capabilities of the internal resistor package, the values of AL (Average Percent Load) and PL (Peak Percent Load) are plotted onto a graph of the Dynamic Brake Resistor’s constant temperature power curve and connected with a straight line. If any portion of this line lies to the right of the constant temperature power curve, the resistor element temperature will exceed the operating temperature limit. Important: The drive will protect the resistor and shut down the Chopper transistor. The drive will then likely trip on an overvoltage fault. 1. Record the values calculated in Section 2. AL = PL = t3 – t2 = Pave = 2. A. Compare the calculated average power to the continuous rating of the dynamic brake resistor in the frame drive you have selected. See . Record the resistor’s continuous rating. Rcont. = B. If Pave is greater than Rcont. you will need to extend the cycle time (in seconds) by the result of the following equation. ⎛P ⎞ ----b⎝ 2 × Decel⎠ ------------------------------- = sec onds R cont 3-2 Evaluating the Internal Resistor 3. Find the correct constant temperature Power Curve for your drive type, voltage and frame. Power Curves for PowerFlex 70 Internal DB Resistors Drive Voltage 240 240 240 400/480 400/480 400/480 Drive Frame(s) A and B C D A and B C D Figure Number 3.1 3.3 3.4 3.5 3.6 3.7 OR Power Curves for PowerFlex 700 Internal DB Resistors Drive Voltage 400/480 400/480 400/480 400/480 Drive Frame 0 1 2 3 Figure Number 3.13 3.14 3.15 Uses external DB resistors only. Refer to Section 4 4. Plot the point where the value of AL, calculated in Step 4 of Section 2, and the desired deceleration time (t3 – t2) intersect. 5. Plot the value of PL, calculated in Step 5 of Section 2, on the vertical axis (0 seconds). 6. Connect AL at (t3 – t2) and PL at 0 seconds with a straight line. This line is the power curve described by the motor as it decelerates to minimum speed. Evaluating the Internal Resistor 3-3 If the line connecting AL and PL lies entirely to the left of the Power Curve, then the capability of the internal resistor is sufficient for the proposed application. Figure 3.1 Example of an Acceptable Resistor Power Curve 3000 480V Frame C 2800 2600 2400 2200 % Peak Power 2000 1800 PL (Peak Percent Load) = 1521% 1600 1400 1200 1000 800 600 400 AL (Average Percent Load) = 100% 200 Decel Time = 15.0 Seconds 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Decel Time (Seconds) If any portion of the line connecting AL and PL lies to the right of the Power Curve, then the capability of the internal resistor is insufficient for the proposed application. • Increase deceleration time (t3 – t2) until the line connecting AL and PL lies entirely to the left of the Power Curve or • Go to Section 4 and select an external resistor from the tables 3-4 Evaluating the Internal Resistor PowerFlex 70 Power Curves Figure 3.2 PowerFlex 70 – 240 Volt, Frames A and B 3000 240V Frames A & B 2800 2600 2400 2200 % Peak Power 2000 1800 1600 1400 1200 1000 800 600 400 200 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Decel Time (Seconds) Figure 3.3 PowerFlex 70 – 240 Volt, Frame C 3000 240V Frame C 2800 2600 2400 2200 % Peak Power 2000 1800 1600 1400 1200 1000 800 600 400 200 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Decel Time (Seconds) Evaluating the Internal Resistor 3-5 Figure 3.4 PowerFlex 70 – 240 Volt, Frame D 3000 240V Frame D 2800 2600 2400 2200 % Peak Power 2000 1800 1600 1400 1200 1000 800 600 400 200 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Decel Time (Seconds) Figure 3.5 PowerFlex 70 – 480 Volt, Frames A and B 3000 480V Frames A & B 2800 2600 2400 2200 % Peak Power 2000 1800 1600 1400 1200 1000 800 600 400 200 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Decel Time (Seconds) 3-6 Evaluating the Internal Resistor Figure 3.6 PowerFlex 70 – 480 Volt, Frame C 3000 480V Frame C 2800 2600 2400 2200 % Peak Power 2000 1800 1600 1400 1200 1000 800 600 400 200 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Decel Time (Seconds) Figure 3.7 PowerFlex 70 – 480 Volt, Frame D 3000 480V Frame D 2800 2600 2400 2200 % Peak Power 2000 1800 1600 1400 1200 1000 800 600 400 200 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Decel Time (Seconds) Evaluating the Internal Resistor 3-7 Figure 3.8 PowerFlex 70 – 600 Volt, Frames A and B 3000 600V Frames A & B 2800 2600 2400 2200 % Peak Power 2000 1800 1600 1400 1200 1000 800 600 400 200 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Decel Time (Seconds) Figure 3.9 PowerFlex 70 – 600 Volt, Frame C 3000 600V Frame C 2800 2600 2400 2200 % Peak Power 2000 1800 1600 1400 1200 1000 800 600 400 200 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Decel Time (Seconds) 3-8 Evaluating the Internal Resistor PowerFlex 700 Power Curves Figure 3.10 PowerFlex 700 – 240 Volt, Frame 1 to 5 HP 3000 240V Frame 1 to 5 HP 2800 2600 2400 2200 % Peak Power 2000 1800 1600 1400 1200 1000 800 600 400 200 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Decel Time (Seconds) Figure 3.11 PowerFlex 700 – 240 Volt, Frame 1 - 7.5 HP 3000 240V Frame 1 - 7.5 HP 2800 2600 2400 2200 % Peak Power 2000 1800 1600 1400 1200 1000 800 600 400 200 0 0 1 2 3 4 5 6 7 8 9 10 11 12 Decel Time (Seconds) 13 14 15 16 17 18 19 20 Evaluating the Internal Resistor 3-9 Figure 3.12 PowerFlex 700 – 240 Volt, Frame 2 3000 240V Frame 2 2800 2600 2400 2200 % Peak Power 2000 1800 1600 1400 1200 1000 800 600 400 200 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 19 20 Decel Time (Seconds) Figure 3.13 PowerFlex 700 – 480 Volt, Frame 0 3000 400V Frame 0 2800 2600 2400 2200 % Peak Power 2000 1800 1600 1400 1200 1000 800 600 400 200 0 0 1 2 3 4 5 6 7 8 9 10 11 12 Decel Time (Seconds) 13 14 15 16 17 18 3-10 Evaluating the Internal Resistor Figure 3.14 PowerFlex 700 – 480 Volt, Frame 1 3000 480V Frame 1 2800 2600 2400 2200 % Peak Power 2000 1800 1600 1400 1200 1000 800 600 400 200 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 19 20 Decel Time (Seconds) Figure 3.15 PowerFlex 700 – 480 Volt, Frame 2 3000 480V Frame 2 2800 2600 2400 2200 % Peak Power 2000 1800 1600 1400 1200 1000 800 600 400 200 0 0 1 2 3 4 5 6 7 8 9 10 11 12 Decel Time (Seconds) 13 14 15 16 17 18 Section 4 Selecting An External Resistor How to Select an External Dynamic Brake Resistor In order to select the appropriate External Dynamic Brake Resistor for your application, the following data must be calculated. Peak Regenerative Power (Expressed in watts) This value is used to determine the maximum resistance value of the Dynamic Brake Resistor. If this value is greater than the maximum imposed by the peak regenerative power of the drive, the drive can trip off due to transient DC bus overvoltage problems. Power Rating of the Dynamic Brake Resistor The average power dissipation of the regenerative mode must be estimated and the power rating of the Dynamic Brake Resistor chosen to be greater than the average regenerative power dissipation of the drive. 4-2 Selecting An External Resistor Protecting External Resistor Packages ! ATTENTION: PowerFlex drives do not offer protection for externally mounted brake resistors. A risk of fire exists if external braking resistors are not protected. External resistor packages must be self-protected from over temperature or the protective circuit show below, or equivalent, must be supplied. Figure 4.1 External Brake Resistor Circuitry Three-Phase AC Input (Input Contactor) M R (L1) S (L2) T (L3) Power Off Power On M M Power Source DB Resistor Thermostat Selecting An External Resistor 4-3 Record the Values Calculated in Section 2 Pb = Pav = Calculate Maximum Dynamic Brake Resistance Value When using an internal Dynamic Brake Resistor, the value is fixed. However, when choosing an external resistor, the maximum allowable Dynamic Brake resistance value (Rdb1) must be calculated. ( Vd )2 R db1 = -----------Pb Rdb1 = Maximum allowable value for the dynamic brake resistor (ohms) Vd = DC bus voltage used for calculating maximum power. (395V DC, 790V DC, 987V DC, or 1135V DC) Pb = Peak breaking power calculated in Section 2: Step 2 (watts) Calculate Maximum Dynamic Brake Resistance: ooooooooo ) 2R db1 = (--------------------------------[ ooooooooo ] Record Maximum Dynamic Brake Resistance: Rdb1 = The choice of the Dynamic Brake resistance value should be less than the value calculated in this step. If the value is greater, the drive can trip on DC bus overvoltage. Calculate required joule rating (joules = watt-seconds): ⎛P ----b-⎞ ⎝ 2 ⎠ × ( t 3 – t 2 ) = watt-seconds Pb watt-second losses = ----- × ( t 3 – t 2 ) × [ 1 – ( motor efficiency × drive efficiency ) ] 2 Drive Efficiency = 0.975 Total watt-seconds = watt-seconds – watt-second losses 4-4 Selecting An External Resistor Select Resistor Select a resistor bank from the following tables or from your resistor supplier that has all of the following: ! • a resistance value that is less than the value calculated (Rdb1 in ohms) • a resistance value that is greater than the minimum resistance listed in • a power value that is greater than the value calculated in Step 3 (Pav in watts) • a watt-second value greater than the value calculated. ATTENTION: The internal dynamic brake IGBT will be damaged if the resistance value of the resistor bank is less than the minimum resistance value of the drive. Use to verify that the resistance value of the selected resistor bank is greater than the minimum resistance of the drive. If no resistor appears in the following tables that is greater than the minimum allowable resistance and is less than the calculated maximum resistance: • Adjust the deceleration time of the application to fit an available resistor package. or • Use the calculated data to purchase resistors locally. or • Consult the factory for other possible resistor packages. Selecting An External Resistor Table 4.A Resistor Selection Ohms Watts 956.00 Ohms 956.00 179 956.00 242 956.00 400 956.00 597 956.00 605 956.00 915 695.00 248 695.00 333 695.00 553 695.00 825 695.00 832 695.00 1200 695.00 1258 615.00 Ohms 615.00 180 615.00 242 615.00 404 615.00 602 615.00 605 615.00 800 615.00 915 546.00 Ohms 546.00 316 546.00 424 546.00 707 546.00 800 546.00 1055 546.00 1059 546.00 1200 546.00 1600 546.00 1601 439.00 Ohms 439.00 254 439.00 339 439.00 568 439.00 800 439.00 847 439.00 848 439.00 1200 439.00 1281 364.00 Ohms 364.00 400 364.00 477 364.00 635 364.00 800 364.00 1065 364.00 1200 Watt Seconds Catalog Manufacturer 4225 4225 6260 6260 6260 6260 4929 4929 7981 7981 7981 35600 15258 552-1A 552-1 555-1A 550-1A 555-1 550-1 552-2A 552-2 555-2A 550-2A 555-2 PR550-2 550-2 PG/PG/IPC PG/PG/IPC PG/IPC PG/IPC PG/IPC PG/IPC PG/IPC PG/IPC PG/IPC PG/IPC PG/IPC PowerOhm PG/IPC 4225 4225 4225 13302 13615 31500 13302 442-1A 442-1 445-1A 440-1A 445-1 PR445-1 440-1 PG/IPC PG/IPC PG/IPC PG/IPC PG/IPC PowerOhm PG/IPC 5634 12050 12050 28000 23004 23004 28000 28000 36619 552-3A 552-3 555-3A PR552-3 550-3A 555-3 PR555-3 PR550-3 550-3 PG/IPC PG/IPC PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PG/IPC 2973 2973 2973 22500 11267 9389 22500 24647 442-2A 442-2 445-2A PR445-2 445-2 440-2A PR440-2 440-2 PG/IPC PG/IPC PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC 18600 3990 15336 18600 24412 18600 PR5510-4 552-4A 552-4 PR552-4 555-4A PR555-4A PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC PowerOhm 4-5 4-6 Selecting An External Resistor Ohms Watts 364.00 1588 364.00 1590 364.00 1600 364.00 2000 364.00 2402 360.00 Ohms 360.00 86 342.00 Ohms 342.00 329 342.00 435 342.00 734 342.00 800 342.00 1088 342.00 1096 342.00 1200 342.00 1600 342.00 1645 283.00 Ohms 283.00 614 283.00 800 283.00 817 283.00 1200 283.00 1372 283.00 2000 283.00 2043 283.00 2048 283.00 2800 283.00 3089 237.00 Ohms 237.00 400 237.00 473 237.00 628 237.00 800 237.00 1057 237.00 1200 237.00 1570 237.00 1577 237.00 1600 237.00 2000 237.00 2373 196.00 Ohms 196.00 400 196.00 800 196.00 890 196.00 1180 196.00 1200 196.00 1600 196.00 1987 196.00 2400 196.00 2950 Watt Seconds 38496 38496 18600 29100 39514 Catalog 555-4 550-4A PR555-4 PR550-4 550-4 Manufacturer PG/IPC PG/IPC PowerOhm PowerOhm PG/IPC 17000 AKR2360P500 Rockwell 3677 3677 14397 17500 23473 22534 17500 27400 36306 442-3A 442-3 445-3A PR445-3A 445-3 440-3A PR445-3 PR440-3 440-3 PG/IPC PG/IPC PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PG/IPC 19092 14500 19092 14500 30046 40900 48120 47338 100700 76680 552-5A PR5510-5 552-5 PR555-5A 555-5A PR555-5 555-5 550-5A PR550-5 550-5 PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC 12100 5321 15649 12100 25351 18900 38496 39748 34300 47200 61422 PR4405-4 442-4A 442-4 PR442-4 445-4A PR445-4A 445-4 440-4A PR445-4 PR440-4 440-4 PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PG/IPC 10000 10000 20970 33567 28300 39000 53519 69800 83096 PR5505-6 PR5510-6 552-6A 552-6 PR552-6 PR555-6A 555-6A PR555-6 555-6 PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC Selecting An External Resistor Ohms Watts 196.00 2965 196.00 4000 196.00 4460 181.00 Ohms 181.00 400 181.00 620 181.00 800 181.00 822 181.00 1200 181.00 1385 181.00 2000 181.00 2055 181.00 2068 181.00 2800 181.00 3108 154.00 Ohms 154.00 182 154.00 242 154.00 400 154.00 408 154.00 604 154.00 610 154.00 800 154.00 913 150.00 Ohms 150.00 400 150.00 800 150.00 1200 150.00 1600 150.00 2000 150.00 2400 150.00 2800 150.00 3200 150.00 3600 150.00 4000 150.00 5200 150.00 5600 128.00 Ohms 128.00 400 128.00 800 128.00 874 128.00 1162 128.00 1200 128.00 1600 128.00 1951 128.00 2400 128.00 2906 128.00 2912 128.00 3600 128.00 4395 Watt Seconds 83096 175800 130669 Catalog 550-6A PR550-6 550-6 Manufacturer PG/IPC PowerOhm PG/IPC 9200 19248 9200 19248 26100 30985 64400 77853 77853 103100 77775 PR4405-5 442-5A PR4410-5 442-5 PR445-5A 445-5A PR445-5 445-5 440-5A PR440-5 440-5 PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC 6416 6416 7800 6416 16431 16431 12300 16431 222-1A 222-1 PR2205-1 225-1A 225-1 220-1A PR225-1 220-1 PG/IPC PG/IPC PowerOhm PG/IPC PG/IPC PG/IPC PowerOhm PG/IPC 7700 12100 30000 54200 53500 82500 132000 136500 196200 192400 333400 329100 PF150R400W PF150R800W PF150R1K20 PF150R1K60 PF150R2K00 PF150R2K40 PF150R2K80 PF150R3K20 PF150R3K60 PF150R4K00 PF150R5K20 PF150R5K60 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm 6500 18500 22065 32863 25500 45500 55397 114800 86382 82626 164100 138024 PR4405-6 PR4410-6 442-6A 442-6 PR442-6 PR445-6A 445-6A PR445-6 445-6 440-6A PR440-6 440-6 PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC 4-7 4-8 Selecting An External Resistor Ohms Watts 125.00 Ohms 125.00 400 125.00 800 125.00 800 125.00 1200 125.00 1200 125.00 1386 125.00 1600 125.00 1850 125.00 2000 125.00 2800 125.00 3095 125.00 3600 125.00 4000 125.00 4000 125.00 4620 125.00 4625 125.00 5600 125.00 6994 125.00 7200 125.00 7600 120.00 Ohms 120.00 260 117.00 Ohms 117.00 150 117.00 250 117.00 300 117.00 300 117.00 400 117.00 600 117.00 600 117.00 800 117.00 900 117.00 900 117.00 1200 117.00 1200 117.00 1500 117.00 1500 117.00 1600 117.00 1800 117.00 2100 117.00 2100 117.00 2250 117.00 2700 117.00 2700 117.00 3000 117.00 3000 Watt Seconds Catalog Manufacturer 6500 18000 18300 24900 25200 32863 44200 51954 68700 112100 130903 161600 267000 277800 208131 208131 282800 212513 341300 344600 PF125R400W PR5505-7 PF125R800W PR5510-7 PF125R1K20 552-7A PF125R1K60 552-7 PF125R2K00 PR555-7A 555-7A PF125R3K60 PR555-7 PF125R4K00 550-7A 555-7 PR550-7 550-7 PF125R7K20 PF125R7K60 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm 52000 AKR2120P1K2 Rockwell 1200 6000 6000 7950 6000 10100 17000 17000 10600 23400 12500 41700 15800 66700 66700 66700 18600 150000 105000 14300 150000 20800 250000 PR117R150W PR117R250W PRT117R300W T117R300W PR117R400W T117R600W PRT117R600W PR117R800W T117R900W PRT117R900W T117R1K2 PR117R1K20 T117R1K5 PRT117R1K5 PR117R1K60 PR117R1K80 T117R2K1 PRT117R2K1 PR117R2K25 T117R2K7 PRT117R2K7 T117R3K0 PRT117R3K0 PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm Selecting An External Resistor Ohms Watts 110.00 Ohms 110.00 255 110.00 338 110.00 400 110.00 570 110.00 800 110.00 845 110.00 850 110.00 1200 110.00 1278 100.00 Ohms 100.00 400 100.00 800 100.00 1200 100.00 1600 100.00 2000 100.00 2400 100.00 2800 100.00 3600 100.00 4000 100.00 4800 100.00 5200 100.00 5600 100.00 6800 100.00 8000 100.00 9200 97.00 Ohms 97.00 150 97.00 250 97.00 300 97.00 300 97.00 400 97.00 600 97.00 600 97.00 800 97.00 900 97.00 900 97.00 1200 97.00 1200 97.00 1200 97.00 1500 97.00 1500 97.00 1600 97.00 2100 97.00 2100 97.00 2250 97.00 2700 97.00 2700 97.00 2700 97.00 3000 Watt Seconds Catalog Manufacturer 7511 7511 5600 18779 15900 18779 18779 39100 46947 222-2A 222-2 PR2205-2 225-2A PR225-2 225-2 220-2A PR220-2 220-2 PG/IPC PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC 5200 20000 35300 55000 89800 130800 125700 211600 205200 285500 275000 273100 450100 692400 676300 PF100R400W PF100R800W PF100R1K20 PF100R1K60 PF100R2K00 PF100R2K40 PF100R2K80 PF100R3K60 PF100R4K00 PF100R4K80 PF100R5K20 PF100R5K60 PF100R6K80 PF100R8K00 PF100R9K20 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm 2200 5000 5000 10300 5000 13400 19400 19400 13800 34600 16500 34600 55300 20800 87100 55300 15400 124400 87100 19100 124400 207300 16800 PR97R150W PR97R250W PRT97R300W T97R300W PR97R400W T97R600W PRT97R600W PR97R800W T97R900W PRT97R900W T97R1K2 PR97R1K20 PRT97R1K2 T97R1K5 PRT97R1K5 PR97R1K60 T97R2K1 PRT97R2K1 PR97R2K25 T97R2K7 PR97R2K70 PRT97R2K7 T97R3K0 PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC 4-9 4-10 Selecting An External Resistor Ohms Watts 97.00 3000 97.00 3600 97.00 3600 97.00 3600 97.00 4200 97.00 4200 91.00 Ohms 91.00 86 85.00 Ohms 85.00 326 85.00 400 85.00 400 85.00 438 85.00 730 85.00 800 85.00 800 85.00 1089 85.00 1094 85.00 1200 85.00 1200 85.00 1600 85.00 1600 85.00 1654 85.00 2000 85.00 2056 85.00 2400 85.00 2720 85.00 2800 85.00 3600 85.00 3600 85.00 4592 85.00 5200 85.00 5600 85.00 5600 85.00 6800 85.00 6801 85.00 6854 85.00 7200 85.00 8800 85.00 10000 85.00 10285 85.00 11200 81.00 Ohms 81.00 400 81.00 800 81.00 1200 81.00 1389 81.00 1600 81.00 1837 81.00 2800 Watt Seconds 199000 22400 207200 278000 19100 266500 Catalog PRT97R3K0 T97R3K6 PR97R3K60 PRT97R3K6 T97R4K2 PRT97R4K2 Manufacturer PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm 17000 AKR2091P500 Rockwell 9076 6800 6900 9076 23004 16900 17200 36384 36384 46200 48400 75400 76200 57901 109000 57588 108900 92016 179500 173600 174300 233795 379200 381400 383300 588500 231135 231135 578500 953500 934100 361490 923100 222-3A PR2205-3 PF85R400W 222-3 225-3A PR225-3A PF85R800W 220-3A 225-3 PF85R1K20 PR225-3 PF85R1K60 PR220-3 220-3 PF85R2K00 552-8A PR552-8 552-8 PF85R2K80 PF85R3K60 PR555-8A 555-8A PF85R5K20 PR555-8 PF85R5K60 PF85R6K80 555-8 550-8A PF85R7K20 PR550-8 PF85R10K0 550-8 PF85R11K2 PG/IPC PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm 6400 28800 46100 34975 72600 55084 173000 PR4405-7A PR4405-7 PR4410-7 442-7A PR442-7 442-7 PR445-7A PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm Selecting An External Resistor Ohms Watts 81.00 3102 81.00 3600 81.00 4000 81.00 4592 81.00 4629 81.00 5600 81.00 6944 80.00 Ohms 80.00 250 80.00 300 80.00 300 80.00 400 80.00 600 80.00 600 80.00 800 80.00 800 80.00 900 80.00 900 80.00 1200 80.00 1200 80.00 1200 80.00 1500 80.00 1500 80.00 1600 80.00 1800 80.00 2000 80.00 2100 80.00 2100 80.00 2250 80.00 2700 80.00 2700 80.00 2700 80.00 3000 80.00 3000 80.00 3150 80.00 3600 80.00 3600 80.00 3600 80.00 4000 80.00 4050 80.00 4200 80.00 4200 80.00 4500 80.00 4500 80.00 4950 80.00 5700 80.00 5700 80.00 5850 80.00 7600 80.00 8000 Watt Seconds 55319 183200 183200 224640 221432 132100 221276 6500 6500 8530 6500 10900 16000 16000 28500 18500 45600 13700 44600 71800 17500 102600 71800 71800 102600 19100 171000 102600 24600 102600 229300 22100 229300 170900 18500 164100 219800 229300 229100 25100 359000 23300 354400 219700 29400 897500 358800 545700 897500 Catalog 445-7A PR445-7 PR440-7A 445-7 440-7A PR440-7 440-7 PR80R250W PRT80R300W T80R300W PF80R400W T80R600W PRT80R600W PF80R800W PR80R800W T80R900W PRT80R900W T80R1K2 PF80R1K20 PRT80R1K2 T80R1K5 PRT80R1K5 PR80R1K60 PR80R1K80 PF80R2K00 T80R2K1 PRT80R2K1 PR80R2K25 T80R2K7 PR80R2K70 PRT80R2K7 T80R3K0 PRT80R3K0 PR80R3K15 T80R3K6 PR80R3K60 PRT80R3K6 PF80R4K00 PR80R4K05 T80R4K2 PRT80R4K2 T80R4K5 PRT80R4K5 PR80R4K95 T80R5K7 PRT80R5K7 PR80R5K85 PF80R7K60 PF80R8K00 4-11 Manufacturer PG/IPC PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm 4-12 Selecting An External Resistor Ohms Watts 80.00 9000 80.00 9000 80.00 9300 80.00 9300 77.00 Ohms 77.00 250 77.00 300 77.00 300 77.00 400 77.00 600 77.00 600 77.00 800 77.00 900 77.00 900 77.00 1200 77.00 1200 77.00 1200 77.00 1500 77.00 1500 77.00 1600 77.00 1800 77.00 2100 77.00 2100 77.00 2250 77.00 2700 77.00 2700 77.00 3000 77.00 3000 77.00 3150 77.00 3600 77.00 3600 77.00 3600 77.00 4050 77.00 4200 77.00 4200 77.00 4500 77.00 4500 77.00 5700 77.00 5700 77.00 9000 77.00 9000 77.00 9300 77.00 9300 70.00 Ohms 70.00 400 70.00 800 70.00 800 70.00 1200 70.00 1200 70.00 2000 Watt Seconds 209000 1435900 230000 1435900 Catalog T80R9K0 PRT80R9K0 T80R9K3 PRT80R9K3 Manufacturer PG/IPC PowerOhm PG/IPC PowerOhm 6200 6200 8210 6200 10600 15400 27500 17900 43900 20800 43900 69200 16400 98800 69100 69100 19100 164600 98800 23800 220700 21300 211600 158000 28100 157900 211600 220600 24200 341100 22400 533100 28700 863800 209000 1382100 230000 1382100 PR77R250W PRT77R300W T77R300W PR77R400W T77R600W PRT77R600W PR77R800W T77R900W PRT77R900W T77R1K2 PR77R1K20 PRT77R1K2 T77R1K5 PRT77R1K5 PR77R1K60 PR77R1K80 T77R2K1 PRT77R2K1 PR77R2K25 T77R2K7 PRT77R2K7 T77R3K0 PRT77R3K0 PR77R3K15 T77R3K6 PR77R3K60 PRT77R3K6 PR77R4K05 T77R4K2 PRT77R4K2 T77R4K5 PRT77R4K5 T77R5K7 PRT77R5K7 T77R9K0 PRT77R9K0 T77R9K3 PRT77R9K3 PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm 5700 24900 25000 39800 62000 89700 PF70R400W PR5505-9A PF70R800W PR5505-9 PF70R1K20 PR5510-9 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm Selecting An External Resistor Ohms Watts 70.00 2400 70.00 2527 70.00 2800 70.00 3303 70.00 4800 70.00 4800 70.00 5643 70.00 7200 70.00 8258 70.00 8424 70.00 9600 70.00 10400 70.00 12489 65.00 Ohms 65.00 400 65.00 800 65.00 1200 65.00 2000 65.00 2400 65.00 3600 65.00 4000 65.00 7200 65.00 7600 65.00 16640 60.00 Ohms 60.00 150 60.00 250 60.00 300 60.00 300 60.00 400 60.00 520 60.00 600 60.00 600 60.00 800 60.00 800 60.00 900 60.00 900 60.00 1200 60.00 1200 60.00 1200 60.00 1500 60.00 1500 60.00 2000 60.00 2250 60.00 2700 60.00 2700 60.00 2700 60.00 3600 60.00 3600 60.00 3600 Watt Seconds 153900 76680 143500 144048 114200 308300 189665 785200 297173 295765 1249300 251200 482144 4-13 Catalog PF70R2K40 552-9A PR552-9 552-9 PR555-9A PF70R4K80 555-9A PR555-9 555-9 550-9A PF70R9K60 PR550-9 550-9 Manufacturer PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PG/IPC 9500 23600 59300 138900 141100 178100 291700 712100 709900 690800 PF65R400W PF65R800W PF65R1K20 PF65R2K00 PF65R2K40 PF65R3K60 PF65R4K00 PF65R7K20 PF65R7K60 PF65R16K6 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm 3400 8700 8700 10300 8700 104000 13000 21400 21400 34200 13700 53900 16400 53900 77000 20800 128300 128300 128300 18500 123100 164900 22000 164900 415400 PR60R150W PR60R250W PRT60R300W T60R300W PF60R400W 2-AKR2120P1K2 T60R600W PRT60R600W PF60R800W PR60R800W T60R900W PRT60R900W T60R1K2 PR60R1K20 PRT60R1K2 T60R1K5 PRT60R1K5 PF60R2K00 PR60R2K25 T60R2K7 PR60R2K70 PRT60R2K7 T60R3K6 PR60R3K60 PRT60R3K6 PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm Rockwell PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm 4-14 Selecting An External Resistor Ohms Watts 60.00 4000 60.00 4500 60.00 4500 60.00 4500 60.00 4950 60.00 5850 60.00 6900 60.00 6900 60.00 7650 60.00 8000 60.00 11000 60.00 11000 60.00 15896 59.00 Ohms 59.00 400 59.00 473 59.00 631 59.00 800 59.00 1056 59.00 1200 59.00 1576 59.00 1577 59.00 1600 59.00 2000 59.00 2384 56.00 Ohms 56.00 800 56.00 1200 56.00 1600 56.00 2010 56.00 2400 56.00 2657 56.00 3600 56.00 4490 56.00 5600 56.00 6642 56.00 6702 56.00 8000 56.00 10045 55.00 Ohms 55.00 400 55.00 800 52.00 Ohms 52.00 400 52.00 800 52.00 1200 52.00 1600 52.00 2400 52.00 2800 52.00 3200 Watt Seconds 269300 28000 269300 673100 265600 409800 164000 1077000 657600 659400 448000 2051300 690800 Catalog PF60R4K00 T60R4K5 PR60R4K50 PRT60R4K5 PR60R4K95 PR60R5K85 T60R6K9 PRT60R6K9 PR60R7K65 PF60R8K00 T60R11K0 PRT60R11K0 PF60R15K8 Manufacturer PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm 8500 10094 25038 33600 39201 52900 64161 64161 75600 126000 99762 PR2205-4 222-4A 222-4 PR222-4 225-4A PR225-4A 225-4 220-4A PR225-4 PR220-4 220-4 PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PG/IPC 31900 50200 71700 61344 114800 154455 251200 245062 628200 245375 245375 201000 388094 PR4405-8 PR4410-8A PR4410-8 442-8A PR442-8 442-8 PR445-8A 445-8A PR445-8 445-8 440-8A PR440-8 440-8 PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC 8000 30800 PF55R400W PF55R800W PowerOhm PowerOhm 10400 28600 65400 111200 149600 142400 233400 PF52R400W PF52R800W PF52R1K20 PF52R1K60 PF52R2K40 PF52R2K80 PF52R3K20 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm Selecting An External Resistor Ohms Watts 52.00 4800 52.00 5600 52.00 6000 52.00 9600 52.00 13312 52.00 18625 48.00 Ohms 48.00 150 48.00 250 48.00 300 48.00 300 48.00 400 48.00 600 48.00 600 48.00 800 48.00 800 48.00 900 48.00 900 48.00 1200 48.00 1200 48.00 1200 48.00 1500 48.00 1500 48.00 1600 48.00 2000 48.00 2700 48.00 2700 48.00 2700 48.00 3000 48.00 3000 48.00 3150 48.00 3600 48.00 3600 48.00 3600 48.00 4200 48.00 4200 48.00 4950 48.00 5670 48.00 5670 48.00 5850 48.00 6600 48.00 6600 48.00 7650 48.00 9450 48.00 12600 48.00 12600 48.00 19100 48.00 19100 48.00 20400 48.00 20400 Watt Seconds 352900 569300 577000 598400 621800 583500 2700 9600 9600 13100 9600 16500 27400 26400 27400 17500 61600 20800 61600 102600 16600 98500 102600 98500 23300 137600 212600 21100 332400 131800 28000 86200 538500 23800 527500 328000 131000 861600 527200 131000 861600 860500 859400 359000 460500 656000 817300 716000 817300 Catalog PF52R4K80 PF52R5K60 PF52R6K00 PF52R9K60 PF52R13K3 PF52R18K6 PR48R150W PR48R250W PRT48R300W T48R300W PF48R400W T48R600W PRT48R600W PF48R800W PR48R800W T48R900W PRT48R900W T48R1K2 PF48R1K20 PRT48R1K2 T48R1K5 PRT48R1K5 PR48R1K60 PF48R2K00 T48R2K7 PR48R2K70 PRT48R2K7 T48R3K0 PRT48R3K0 PR48R3K15 T48R3K6 PF48R3K60 PRT48R3K6 T48R4K2 PRT48R4K2 PR48R4K95 T48R5K67 PRT48R5K67 PR48R5K85 T48R6K6 PRT48R6K6 PR48R7K65 PR48R9K45 T48R12K6 PRT48R12K6 T48R19K1 PRT48R19K1 T48R20K4 PRT48R20K4 4-15 Manufacturer PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm 4-16 Selecting An External Resistor Ohms Watts 47.00 Ohms 47.00 166 45.00 Ohms 45.00 300 45.00 300 45.00 400 45.00 400 45.00 600 45.00 600 45.00 617 45.00 800 45.00 827 45.00 1200 45.00 1200 45.00 1200 45.00 1200 45.00 1378 45.00 1500 45.00 1500 45.00 1600 45.00 2000 45.00 2056 45.00 2066 45.00 2100 45.00 2100 45.00 2250 45.00 2700 45.00 2700 45.00 2800 45.00 3000 45.00 3000 45.00 3125 45.00 3200 45.00 3600 45.00 3600 45.00 3600 45.00 3883 45.00 4050 45.00 4400 45.00 5138 45.00 5850 45.00 6000 45.00 6000 45.00 6300 45.00 6750 45.00 7200 45.00 8672 45.00 12600 45.00 12600 45.00 12846 Watt Seconds Catalog Manufacturer 33000 AKR2047P500 Rockwell 9000 12300 8900 9000 15800 25700 30828 40300 30828 19100 57600 57700 96200 49529 24900 92400 96100 101800 124800 124800 28100 123700 92400 22000 311600 201900 19800 307700 197177 73400 26600 199200 494600 120810 311600 504800 308128 494300 125000 807700 493900 494600 161500 370410 359000 403000 409420 PRT45R300W T45R300W PR2205-5 PR45R400W T45R600W PRT45R600W 222-5A PR2210-5 222-5 T45R1K2 PR225-5A PR45R1K20 PRT45R1K2 225-5A T45R1K5 PRT45R1K5 PR5505-10 PR225-5 220-5A 225-5 T45R2K1 PRT45R2K1 PR45R2K25 T45R2K7 PRT45R2K7 PR220-5 T45R3K0 PRT45R3K0 220-5 PR552-10A T45R3K6 PR45R3K60 PRT45R3K6 552-10A PR45R4K05 PR552-10 552-10 PR45R5K85 T45R6K0 PRT45R6K0 PR45R6K30 PR45R6K75 PR555-10A 555-10A T45R12K6 PRT45R12K6 555-10 PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PG/IPC PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC Selecting An External Resistor Ohms Watts 45.00 12943 45.00 14580 45.00 18000 45.00 19100 45.00 19100 45.00 19427 44.00 Ohms 44.00 400 44.00 800 44.00 800 44.00 1200 44.00 1200 44.00 2000 44.00 2000 44.00 2561 44.00 2800 44.00 2800 44.00 3381 44.00 3600 44.00 4000 44.00 4800 44.00 5600 44.00 5720 44.00 7200 44.00 7200 44.00 7600 44.00 8454 44.00 8537 44.00 11264 44.00 12784 44.00 14256 44.00 15000 44.00 23276 40.00 Ohms 40.00 300 40.00 300 40.00 400 40.00 800 40.00 900 40.00 900 40.00 1200 40.00 1200 40.00 1200 40.00 1200 40.00 1600 40.00 1800 40.00 1800 40.00 1800 40.00 2000 40.00 3150 Watt Seconds 409420 494900 638600 656000 794400 563362 4-17 Catalog 550-10A PR555-10 PR550-10 T45R19K1 PRT45R19K1 550-10 Manufacturer PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC 8800 39400 39500 56400 57700 99500 126100 121670 197400 197900 190604 79000 300900 193400 477000 184031 157900 793400 775400 305624 302807 483600 369388 494900 495000 1263600 PF44R400W PR4405-9A PF44R800W PR4405-9 PF44R1K20 PR4410-9 PF44R2K00 442-9A PR442-9 PF44R2K80 442-9 PF44R3K60 PF44R4K00 PR445-9A PF44R5K60 445-9A PR445-9 PF44R7K20 PF44R7K60 445-9 440-9A PF44R11K2 440-9 PR440-9 PF44R15K0 PF44R23K2 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm 8000 10900 8000 35900 14300 51300 17300 51300 82100 83400 82100 18500 82100 109900 114700 177100 PRT40R300W T40R300W PF40R400W PF40R800W T40R900W PRT40R900W T40R1K2 PR40R1K20 PRT40R1K2 PF40R1K20 PR40R1K60 T40R1K8 PR40R1K80 PRT40R1K8 PF40R2K00 PR40R3K15 PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm 4-18 Selecting An External Resistor Ohms Watts 40.00 3200 40.00 4000 40.00 4000 40.00 4000 40.00 4050 40.00 5850 40.00 6000 40.00 7200 40.00 10000 40.00 10000 40.00 10240 40.00 10240 40.00 11000 40.00 11000 40.00 11429 40.00 16000 40.00 16000 40.00 16000 40.00 17000 40.00 17000 40.00 19000 40.00 19000 40.00 22000 40.00 22000 40.00 22858 36.00 Ohms 36.00 400 36.00 800 36.00 1200 36.00 1600 36.00 2000 36.00 2400 36.00 4000 36.00 4400 36.00 9216 36.00 11298 36.00 16517 36.00 16863 36.00 19044 36.00 24978 35.00 Ohms 35.00 1200 35.00 2000 35.00 2800 35.00 3600 35.00 4000 35.00 5058 35.00 5600 35.00 6423 35.00 11340 Watt Seconds 277000 105000 439600 448800 273300 438600 727000 718000 309000 403000 414500 445700 333000 403000 440000 521000 638700 649900 574000 649900 568000 649900 1099600 1202000 1130600 Catalog PF40R3K20 T40R4K0 PRT40R4K0 PF40R4K00 PR40R4K05 PR40R5K85 PF40R6K00 PR40R7K20 T40R10K0 PRT40R10K0 PF40R10K2 PR40R10K2 T40R11K0 PRT40R11K0 PF40R11K4 T40R16K0 PF40R16K0 PRT40R16K0 T40R17K0 PRT40R17K0 T40R19K0 PRT40R19K0 PRT40R22K0 T40R22K0 PF40R22K8 Manufacturer PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm 12900 32400 77000 103200 99000 79200 395700 399000 414500 316618 449907 449907 1064100 1321116 PF36R400W PF36R800W PF36R1K20 PF36R1K60 PF36R2K00 PF36R2K40 PF36R4K00 PF36R4K40 PF36R9K21 555-11A 555-11 550-11A PF36R19K0 550-11 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PG/IPC PG/IPC PowerOhm PG/IPC 74700 96100 242300 392600 153800 157272 125600 249757 384900 PR5505-11A PR5505-11 PR5510-11A PR5510-11 PR552-11A 552-11A PR552-11 552-11 PR555-11A PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm Selecting An External Resistor Ohms Watts 35.00 18515 35.00 23660 34.00 Ohms 34.00 300 34.00 300 34.00 900 34.00 900 34.00 1200 34.00 1600 34.00 1800 34.00 1800 34.00 2250 34.00 2400 34.00 2400 34.00 3600 34.00 3600 34.00 4000 34.00 4000 34.00 4500 34.00 8000 34.00 8000 34.00 8704 34.00 9000 34.00 9000 34.00 13000 34.00 13000 34.00 13600 34.00 15000 34.00 15000 34.00 17000 34.00 17000 34.00 18000 34.00 18000 34.00 19000 34.00 19000 34.00 26000 34.00 26000 32.00 Ohms 32.00 300 32.00 300 32.00 400 32.00 400 32.00 600 32.00 600 32.00 800 32.00 875 32.00 900 32.00 900 32.00 1162 32.00 1200 Watt Seconds 940200 1274300 Catalog PR555-11 PR550-11 4-19 Manufacturer PowerOhm PowerOhm 12200 14700 19100 72700 72700 97500 25100 152600 93500 30100 232500 93000 373700 98600 610300 373700 262000 345400 378900 285000 345400 456000 577700 505000 456000 577700 914500 990000 914500 1017000 914500 1048000 1591000 2360900 PRT34R300W T34R300W T34R900W PRT34R900W PR34R1K20 PR34R1K60 T34R1K8 PRT34R1K8 PR34R2K25 T34R2K4 PRT34R2K4 T34R3K6 PRT34R3K6 T34R4K0 PRT34R4K0 PR34R4K50 T34R8K0 PRT34R8K0 PR34R8K70 T34R9K0 PRT34R9K0 T34R13K0 PRT34R13K0 PR34R13K6 T34R15K0 PRT34R15K0 PRT34R17K0 T34R17K0 PRT34R18K0 T34R18K0 PRT34R19K0 T34R19K0 T34R26K0 PRT34R26K0 PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm 11400 13800 11300 11400 17500 41100 41100 35054 19100 65700 55162 65600 PRT32R300W T32R300W PR2205-6 PF32R400W T32R600W PRT32R600W PF32R800W 222-6A T32R900W PRT32R900W 222-6 PR32R1K20 PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC PowerOhm 4-20 Selecting An External Resistor Ohms 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Watts 1200 1500 1500 1600 1600 1600 1955 2000 2100 2100 2250 2400 2400 2700 2700 2800 2906 2918 3150 3600 4000 4000 4000 4395 4500 4500 4800 4950 5200 5850 8192 8420 8420 9144 10368 12700 12700 12800 13545 17100 17100 18000 18000 18286 21632 26000 26000 27090 28000 28000 Watt Seconds 70600 28100 88000 72300 91700 91800 88573 143600 20200 218900 143600 113100 221500 25200 351700 220200 82626 82626 218800 102600 83300 140600 574400 222215 105000 574400 581600 350600 583400 574000 356600 246000 287800 345400 385000 410000 505500 475300 511000 914500 931000 914500 1017000 931100 1203600 1591000 2270100 2541900 2270100 2304000 Catalog PF32R1K20 T32R1K5 PRT32R1K5 PR225-6A PR32R1K60 PF32R1K60 225-6A PF32R2K00 T32R2K1 PRT32R2K1 PR32R2K25 PF32R2K40 PR225-6 T32R2K7 PRT32R2K7 PF32R2K80 225-6 220-6A PR32R3K15 PF32R3K60 T32R4K0 PR220-6 PRT32R4K0 220-6 T32R4K5 PRT32R4K5 PF32R4K80 PR32R4K95 PF32R5K20 PR32R5K85 PR32R8K19 T32R8K42 PRT32R8K42 PF32R9K14 PF32R10K3 T32R12K7 PRT32R12K7 PR32R12K8 PF32R13K5 PRT32R17K1 T32R17K1 PRT32R18K0 T32R18K0 PF32R18K2 PF32R21K6 T32R26K0 PRT32R26K0 PF32R27K0 PRT32R28K0 T32R28K0 Manufacturer PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC Selecting An External Resistor Ohms Watts 30.00 Ohms 30.00 260 29.00 Ohms 29.00 1200 29.00 1600 29.00 2000 29.00 2800 29.00 3200 29.00 3800 29.00 4800 29.00 5130 29.00 8487 29.00 9396 29.00 11600 29.00 12667 29.00 12826 29.00 19396 29.00 19604 28.00 Ohms 28.00 400 28.00 800 28.00 1200 28.00 1600 28.00 1600 28.00 2000 28.00 2400 28.00 2800 28.00 3200 28.00 4000 28.00 4400 28.00 4800 28.00 5600 28.00 6096 28.00 7501 28.00 8258 28.00 9072 28.00 9072 28.00 11200 28.00 13615 28.00 14812 28.00 15001 28.00 18928 28.00 18928 28.00 18928 28.00 20321 28.00 20646 28.00 23548 28.00 28672 28.00 30001 28.00 30492 28.00 36288 Watt Seconds Catalog 4-21 Manufacturer 52000 AKR2030P1K2 Rockwell 59400 79600 47300 325300 127400 127069 104100 199993 253840 274900 447000 359925 359925 615920 1061900 PR4405-10A PR4405-10 PR4410-10A PR4410-10 PR442-10A 442-10A PR442-10 442-10 445-10A PR445-10A PR445-10 440-10A 445-10 440-10 PR440-10 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PG/IPC PG/IPC PG/IPC PowerOhm 15400 35900 57300 76900 77000 124100 79700 314200 123000 502600 493600 100500 320400 299521 345400 237463 329900 330000 447100 359925 752100 846300 1061900 1132700 1132800 1100930 1033301 2224200 3042500 3042600 2138364 4610000 PF28R400W PF28R800W PF28R1K20 PR5505-12A PF28R1K60 PF28R2K00 PR5505-12 PF28R2K80 PR5510-12A PF28R4K00 PF28R4K40 PR5510-12 PF28R5K60 552-12A PF28R7K50 552-12 PR552-12 PF28R9K07 PF28R11K2 555-12A PR555-12A PF28R15K0 PR550-12A PR555-12 PF28R18K9 550-12A 555-12 PF28R23K5 PR550-12 PF28R30K0 550-12 PF28R36K2 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm 4-22 Selecting An External Resistor Ohms Watts 27.00 Ohms 27.00 300 27.00 300 27.00 600 27.00 600 27.00 800 27.00 900 27.00 900 27.00 1200 27.00 1200 27.00 1200 27.00 1500 27.00 1500 27.00 1600 27.00 2100 27.00 2100 27.00 3300 27.00 3300 27.00 3600 27.00 6912 27.00 8420 27.00 8420 27.00 10800 27.00 11500 27.00 11500 27.00 15000 27.00 15000 27.00 21600 27.00 21600 27.00 27400 27.00 27400 25.00 Ohms 25.00 250 25.00 300 25.00 300 25.00 400 25.00 400 25.00 600 25.00 600 25.00 800 25.00 800 25.00 900 25.00 900 25.00 1200 25.00 1200 25.00 1200 25.00 1200 25.00 1500 25.00 1500 25.00 1600 Watt Seconds Catalog Manufacturer 15400 18500 15400 34700 34700 24900 55400 18800 55400 74200 23700 119600 74200 27300 302900 73900 484700 296300 300700 346700 358000 401100 391000 433300 731600 931000 1346000 1906900 2075000 2833000 PRT27R300W T27R300W T27R600W PRT27R600W PR27R800W T27R900W PRT27R900W T27R1K2 PR27R1K20 PRT27R1K2 T27R1K5 PRT27R1K5 PR27R1K60 T27R2K1 PRT27R2K1 T27R3K3 PRT27R3K3 PR27R3K60 PR27R6K91 PRT27R8K42 T27R8K42 PR27R10K8 T27R11K5 PRT27R11K5 PRT27R15K0 T27R15K0 T27R21K6 PRT27R21K6 T27R27K4 PRT27R27K4 PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC PowerOhm 14300 14300 17200 13800 14300 14300 53500 53500 55600 23000 71700 27700 71400 71700 112200 22000 173100 55000 PR25R250W PRT25R300W T25R300W PF25R400W PR25R400W T25R600W PRT25R600W PR25R800W PF25R800W T25R900W PRT25R900W T25R1K2 PF25R1K20 PR25R1K20 PRT25R1K2 T25R1K5 PRT25R1K5 PF25R1K60 PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm Selecting An External Resistor Ohms Watts 25.00 1800 25.00 2000 25.00 2400 25.00 2700 25.00 2800 25.00 3150 25.00 3200 25.00 3300 25.00 3300 25.00 3900 25.00 3900 25.00 6400 25.00 6876 25.00 8420 25.00 8420 25.00 10000 25.00 10158 25.00 13751 25.00 16900 25.00 21025 25.00 25600 25.00 32400 25.00 40632 25.00 55001 24.00 Ohms 24.00 2000 24.00 2800 24.00 3600 24.00 5600 24.00 7340 24.00 7776 24.00 9600 24.00 9635 24.00 16224 24.00 16393 24.00 20184 24.00 24086 24.00 24468 24.00 24576 24.00 31104 24.00 36710 23.00 Ohms 23.00 250 23.00 300 23.00 300 23.00 400 23.00 600 23.00 600 23.00 800 23.00 800 Watt Seconds 112200 173100 130800 280000 277000 274700 272600 73900 448800 190000 448800 278600 276400 288900 328000 371400 383200 752200 962500 2012300 2789000 4149000 1445600 2926300 4-23 Catalog PR25R1K80 PF25R2K00 PF25R2K40 PR25R2K70 PF25R2K80 PR25R3K15 PF25R3K20 T25R3K3 PRT25R3K3 T25R3K9 PRT25R3K9 PR25R6K40 PF25R6K87 PRT25R8K42 T25R8K42 PR25R10K0 PF25R10K1 PF25R13K7 PR25R16K9 PF25R21K0 PF25R25K6 PF25R32K4 PF25R40K6 PF25R55K0 Manufacturer PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm 166100 105400 86100 430700 211079 274900 383100 299938 900800 533797 1906300 1173670 1871068 2662200 3995200 844315 PR5505-13A PR5505-13 PR5510-13A PR5510-13 552-13A PR552-13A PR552-13 552-13 PR555-13A 555-13A PR555-13 555-13 550-13A PR550-13A PR550-13 550-13 PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PG/IPC 20700 13200 15800 20700 20800 49200 49200 51300 PR23R250W PRT23R300W T23R300W PR23R400W T23R600W PRT23R600W PR23R800W PF23R800W PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm 4-24 Selecting An External Resistor Ohms Watts 23.00 900 23.00 900 23.00 1200 23.00 1200 23.00 1200 23.00 1500 23.00 1500 23.00 1600 23.00 2000 23.00 2000 23.00 2100 23.00 2100 23.00 2250 23.00 2400 23.00 3150 23.00 3600 23.00 3600 23.00 4000 23.00 4982 23.00 6310 23.00 6310 23.00 6469 23.00 7452 23.00 7452 23.00 7490 23.00 7490 23.00 10200 23.00 10200 23.00 11125 23.00 12167 23.00 15548 23.00 15548 23.00 16172 23.00 23552 23.00 29808 22.00 Ohms 22.00 1200 22.00 1600 22.00 2700 22.00 5632 22.00 11638 22.00 14872 21.00 Ohms 21.00 400 21.00 800 21.00 1200 21.00 1600 21.00 2000 21.00 2400 21.00 3200 Watt Seconds 21300 63200 63100 63200 63500 20200 157300 82600 65500 157300 23100 252800 157300 258000 252400 82500 185800 82500 254295 179000 230300 399830 275000 281600 288900 328000 310000 361100 492736 658100 900800 900900 825698 2535400 3841600 Catalog T23R900W PRT23R900W PR4405-11A PR23R1K20 PF23R1K20 T23R1K5 PRT23R1K5 PF23R1K60 PR4405-11 PF23R2K00 T23R2K1 PRT23R2K1 PR23R2K25 PR4410-11A PR23R3K15 PR4410-11 PF23R3K60 PR442-11A 442-11A T23R6K31 PRT23R6K31 442-11 PF23R7K45 PR442-11 PRT23R7K49 T23R7K49 T23R10K2 PRT23R10K2 445-11A PR445-11A PR445-11 PF23R15K5 445-11 PR440-11 PF23R29K8 Manufacturer PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm 28200 45200 63000 245000 626900 847000 PR22R1K20 PR22R1K60 PR22R2K70 PR22R5K63 PR22R11K6 PR22R14K8 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm 18900 47100 57700 75400 143600 107700 373400 PF21R400W PF21R800W PF21R1K20 PF21R1K60 PF21R2K00 PF21R2K40 PF21R3K20 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm Selecting An External Resistor Ohms Watts 21.00 4000 21.00 5626 21.00 7426 21.00 8400 21.00 11251 21.00 17661 21.00 22501 21.00 33600 21.00 45001 21.00 70644 20.00 Ohms 20.00 300 20.00 300 20.00 400 20.00 600 20.00 600 20.00 800 20.00 900 20.00 900 20.00 1200 20.00 1372 20.00 1500 20.00 1500 20.00 1600 20.00 1600 20.00 1860 20.00 2250 20.00 2400 20.00 3063 20.00 4000 20.00 4572 20.00 4650 20.00 5120 20.00 5940 20.00 5940 20.00 6480 20.00 7031 20.00 8000 20.00 8920 20.00 8920 20.00 10700 20.00 10700 20.00 13520 20.00 15200 20.00 15200 20.00 16605 20.00 20600 20.00 20600 20.00 24910 20.00 28400 Watt Seconds 240800 236100 234800 319400 564200 1694600 2282000 5992900 2394200 6778300 13700 18000 17900 17300 41100 41000 18500 55000 54900 87086 28000 224400 138400 138500 55084 224400 87900 138493 358900 222215 221432 222800 231100 260000 219900 169227 297100 267000 361100 548700 582000 770000 924000 1452900 825698 1602000 2124800 1781970 1066000 Catalog PF21R4K00 PF21R5K62 PF21R7K42 PF21R8K40 PF21R11K2 PF21R17K6 PF21R22K5 PF21R33K6 PF21R45K0 PF21R70K6 T20R300W PRT20R300W PR2205-7A T20R600W PRT20R600W PR2205-7 T20R900W PRT20R900W PR20R1K20 222-7A T20R1K5 PRT20R1K5 PR222-7 PR20R1K60 222-7 PR20R2K25 PR225-7A 225-7A PR225-7 220-7A 225-7 PR20R5K12 PRT20R5K94 T20R5K94 PR220-7 220-7 PR20R8K00 T20R8K92 PRT20R8K92 PRT20R10K7 T20R10K7 PR20R13K5 T20R15K2 PRT20R15K2 440-11A T20R20K6 PRT20R20K6 440-11 T20R28K4 4-25 Manufacturer PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC PG/IPC 4-26 Selecting An External Resistor Ohms Watts 20.00 28400 20.00 34600 20.00 34600 19.00 Ohms 19.00 400 19.00 800 19.00 1200 19.00 1200 19.00 1600 19.00 2000 19.00 2250 19.00 2400 19.00 2700 19.00 2800 19.00 3200 19.00 3200 19.00 4864 19.00 4864 19.00 6716 19.00 6859 19.00 7600 19.00 8213 19.00 9540 19.00 10051 19.00 10051 19.00 12170 19.00 12844 19.00 12844 19.00 13613 19.00 16425 19.00 19456 19.00 19456 19.00 19456 19.00 21305 19.00 30400 19.00 30400 19.00 31798 19.00 31965 19.00 40204 19.00 47500 19.00 47709 19.00 63916 19.00 77824 18.00 Ohms 18.00 1600 18.00 1600 18.00 1800 18.00 2250 18.00 2400 18.00 2700 Watt Seconds 4815100 1148000 4815100 Catalog PRT20R28K4 T20R34K6 PRT20R34K6 Manufacturer PowerOhm PG/IPC PowerOhm 17100 39000 84900 85300 68300 213200 208800 83500 208400 339300 68200 344700 207200 207300 220000 213300 272500 272600 410613 564100 564200 410613 731500 800700 700700 1497400 2028300 2131600 2155200 1514674 5393500 5393600 3029900 2913365 2128200 10656500 5953399 6142800 8113500 PF19R400W PF19R800W PF19R1K20 PR19R1K20 PF19R1K60 PF19R2K00 PR19R2K25 PR5505-14A PR19R2K70 PF19R2K80 PR5505-14 PF19R3K20 PR5510-14A PF19R4K86 PF19R6K71 PR19R6K85 PR5510-14 PF19R8K21 552-14A PR552-14A PF19R10K0 552-14 PR19R12K8 PR552-14 PF19R13K6 PF19R16K4 PR555-14A PR19R19K4 PF19R19K4 555-14A PR555-14 PF19R30K4 550-14A 555-14 PF19R40K2 PR550-14 550-14 PF19R63K9 PF19R77K8 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm 23100 51200 123100 197800 79100 197800 PR18R1K60 PR4405-12A PR18R1K80 PR18R2K25 PR4405-12 PR18R2K70 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm Selecting An External Resistor Ohms Watts 18.00 3150 18.00 3200 18.00 3600 18.00 4608 18.00 4608 18.00 5832 18.00 6184 18.00 6498 18.00 7200 18.00 8266 18.00 9522 18.00 9522 18.00 12168 18.00 13810 18.00 15138 18.00 15138 18.00 18432 18.00 18432 18.00 20612 18.00 20664 18.00 23328 18.00 28800 18.00 28800 18.00 30910 15.40 Ohms 15.40 800 15.40 1200 15.40 1600 15.40 2250 15.40 2400 15.40 3600 15.40 5063 15.40 8146 15.40 10410 15.40 12951 15.40 19958 15.40 20251 15.40 41642 15.00 Ohms 15.00 300 15.00 300 15.00 400 15.00 520 15.00 600 15.00 600 15.00 800 15.00 900 15.00 900 15.00 1500 15.00 1500 Watt Seconds 322900 323000 323100 195800 200600 219900 152850 202100 267400 234734 512900 564100 693000 660558 1480900 1497300 2019400 2028300 1336477 1336477 3006500 4994000 5136800 899814 Catalog PR18R3K15 PR4410-12A PR18R3K60 PR4410-12 PR18R4K60 PR442-12A 442-12A PR18R6K49 PR18R7K20 442-12 PR18R9K52 PR442-12 PR18R12K1 445-12A PR18R15K1 PR445-12A PR18R18K4 PR445-12 440-12A 445-12 PR18R23K3 PR440-12 PR18R28K8 440-12 4-27 Manufacturer PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC 42400 106000 172800 276500 123100 275700 165000 438800 600600 1267000 2572200 2612300 2407200 PF15F4R800W PF15F4R1K20 PR15F4R1K60 PR15F4R2K25 PF15F4R2K40 PR15F4R3K60 PF15F4R5K06 PR15F4R8K14 PF15F4R10K4 PR15F4R12K9 PR15F4R19K9 PF15F4R20K2 PF15F4R41K6 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm 16400 19300 19300 104000 20800 41300 41300 22000 103900 38800 164900 T15R300W PRT15R300W PR15R400W 2-AKR2030P1K2 T15R600W PRT15R600W PR15R800W T15R900W PRT15R900W T15R1K5 PRT15R1K5 PG/IPC PowerOhm PowerOhm Rockwell PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm 4-28 Selecting An External Resistor Ohms Watts 15.00 1600 15.00 2000 15.00 2800 15.00 3150 15.00 3840 15.00 4210 15.00 4210 15.00 4860 15.00 4860 15.00 6000 15.00 6160 15.00 6160 15.00 7132 15.00 7935 15.00 8570 15.00 8570 15.00 9919 15.00 10140 15.00 11400 15.00 11400 15.00 12112 15.00 12615 15.00 15360 15.00 15360 15.00 15927 15.00 18173 15.00 23772 15.00 23894 15.00 24000 15.00 24000 15.00 27060 15.00 35663 15.00 37500 15.00 40388 15.00 40587 15.00 60579 15.00 73500 14.00 Ohms 14.00 300 14.00 300 14.00 400 14.00 600 14.00 600 14.00 800 14.00 800 14.00 900 14.00 900 14.00 1200 14.00 1200 14.00 1200 Watt Seconds 164900 65900 269200 268900 177000 122400 143000 164900 168400 218000 232000 288900 179963 401300 457300 466000 328491 600500 734000 1027000 550465 1197800 1613000 1648000 1158280 1158280 719851 719851 3995200 4195000 719851 1313963 7571700 1300276 1313963 7591398 17841500 15400 18000 18000 19400 38500 38400 38500 20700 95800 24500 39800 153900 Catalog PR15R1K60 PR4405-13A PR4405-13 PR15R3K15 PR4410-13A PRT15R4K21 T15R4K21 PR5505-15 PR15R4K86 PR4410-13 T15R6K16 PRT15R6K16 442-13A PR442-13A PRT15R8K57 T15R8K57 442-13 PR442-13 T15R11K4 PRT15R11K4 552-15A PR552-15A PR552-15 PR445-13A 445-13A 552-15 440-13A 445-13 PR445-13 PR440-13A 555-15A 440-13 PR440-13 550-15A 555-15 550-15 PR550-15 Manufacturer PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PG/IPC PG/IPC PG/IPC PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC PG/IPC PG/IPC PowerOhm T14R300W PRT14R300W PR14R400W T14R600W PRT14R600W PR2205-8 PR14R800W T14R900W PRT14R900W T14R1K2 PR2210-8A PRT14R1K2 PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm Selecting An External Resistor Ohms Watts 14.00 1600 14.00 1800 14.00 1800 14.00 1800 14.00 2012 14.00 2400 14.00 2657 14.00 3150 14.00 4495 14.00 4536 14.00 4536 14.00 6160 14.00 6160 14.00 6642 14.00 6708 14.00 7406 14.00 9464 14.00 10045 14.00 11400 14.00 11400 14.00 12700 14.00 12700 13.00 Ohms 13.00 400 13.00 800 13.00 1200 13.00 1600 13.00 2250 13.00 2800 13.00 3328 13.00 5200 13.00 5457 13.00 11000 12.00 Ohms 12.00 400 12.00 800 12.00 1200 12.00 2250 12.00 2400 12.00 3072 12.00 3888 12.00 3888 12.00 4800 12.00 6348 12.00 6348 12.00 8112 12.00 9641 12.00 10092 12.00 10092 12.00 12288 Watt Seconds 61500 27800 153900 251300 61344 50200 154455 251300 117367 157200 164900 216700 232000 172138 172138 376000 600500 523728 734000 1027000 1027000 1038000 4-29 Catalog PR2210-8 T14R1K8 PR14R1K80 PRT14R1K8 222-8A PR222-8 222-8 PR14R3K15 225-8A PR14R4K53 PR225-8A PRT14R6K16 T14R6K16 225-8 220-8A PR225-8 PR220-8 220-8 T14R11K4 PRT14R11K4 PRT14R12K7 T14R12K7 Manufacturer PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PG/IPC PG/IPC PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PG/IPC 27800 58400 88900 111200 233400 238800 144900 193100 191600 1048200 PR13R400W PF13R800W PR13R1K20 PF13R1K60 PR13R2K25 PF13R2K80 PR13R3K32 PR13R5K20 PF13R5K45 PF13R11K0 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm 82100 131900 134700 215400 215300 133600 140800 155500 191500 342000 376000 500400 440372 898400 1048100 1433800 PR12R400W PR12R800W PR12R1K20 PR12R2K25 PR4405-14A PR12R3K07 PR5505-16A PR4405-14 PR4410-14A PR12R6K34 PR5505-16 PR4410-14 442-14A PR442-14A PR5510-16 PR552-16A PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm 4-30 Selecting An External Resistor Ohms Watts 12.00 12398 12.00 13780 12.00 15552 12.00 19200 12.00 20673 12.00 21531 12.00 24300 12.00 30000 12.00 30000 12.00 30776 12.00 32136 12.00 32297 12.00 43200 12.00 45934 12.00 46170 12.00 48204 12.00 58800 12.00 68911 12.00 86700 11.00 Ohms 11.00 800 11.00 1200 11.00 1600 11.00 2000 11.00 2400 11.00 2561 11.00 3381 11.00 3564 11.00 5720 11.00 5819 11.00 8454 11.00 8537 11.00 9251 11.00 12784 11.00 14256 10.40 Ohms 10.40 300 10.40 300 10.40 600 10.40 600 10.40 900 10.40 900 10.40 1500 10.40 1500 10.40 1800 10.40 2662 10.40 2970 10.40 2970 10.40 4160 10.40 5360 Watt Seconds 890985 890985 1955200 3595700 599876 1924486 3941400 6169500 6450000 1040221 1040221 1040221 10984300 2387466 2247026 1314510 16476500 10015318 28607000 Catalog 442-14 552-16A PR442-14 PR552-16 552-16 445-14A PR445-14A PR445-14 PR555-16A 555-16A 440-14A 445-14 PR555-16 550-16A 555-16 440-14 PR440-14 550-16 PR550-16 Manufacturer PG/IPC PG/IPC PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PG/IPC PG/IPC PowerOhm PG/IPC PG/IPC PG/IPC PowerOhm PG/IPC PowerOhm 17900 48300 39400 197400 197400 121123 100080 116600 237243 321000 407344 407344 898400 890985 1737900 PR2205-9A PR2205-9 PR2210-9A PR2210-9 PR222-9A 222-9A 222-9 PR222-9 225-9A PR225-9A 225-9 220-9A PR225-9 220-9 PR220-9 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC PowerOhm 17300 21400 22900 46100 24500 114300 25400 186700 186700 115900 81600 95100 153300 274400 T10F4R300W PRT10F4R300W T10F4R600W PRT10F4R600W T10F4R900W PRT10F4R900W T10F4R1K5 PRT10F4R1K5 PR10F4R1K80 PR10F4R2K66 PRT10F4R2K97 T10F4R2K97 PR10F4R4K16 PRT10F4R5K36 PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm Selecting An External Resistor Ohms Watts 10.40 5360 10.40 6040 10.40 6040 10.40 8746 10.40 8890 10.40 8890 10.40 11000 10.40 11000 10.40 15500 10.40 15500 10.40 16640 10.40 18900 10.40 18900 10.40 26000 10.40 26000 10.40 26000 10.40 35600 10.40 35600 10.40 43900 10.40 43900 10.40 72300 10.40 72300 10.10 Ohms 10.10 400 10.10 800 10.10 1200 10.00 4000 10.00 6760 10.00 8410 10.00 12960 10.00 16000 10.00 17713 10.00 25000 10.00 26569 10.00 36000 10.00 39559 10.00 49000 10.00 51840 10.00 59043 10.00 59339 9.50 Ohms 9.50 3800 9.50 5025 9.50 6422 9.50 9728 9.50 11926 9.50 12312 9.50 15200 9.50 17890 9.50 23750 Watt Seconds 329000 274400 489000 855700 770300 801000 359000 1168200 1742000 2490600 2966900 1991000 3790000 2002000 5718700 5885300 1230000 10024700 1367000 14328100 4620000 18257600 4-31 Catalog T10F4R5K36 PRT10F4R6K4 T10F4R6K4 PR10F4R8K74 PRT10F4R8K89 T10F4R8K89 T10F4R11K0 PRT10F4R11K0 T10F4R15K5 PRT10F4R15K5 PR10F4R16K6 T10F4R18K9 PRT10F4R18K9 T10F4R26K0 PR10F4R26K0 PRT10F4R26K0 T10F4R35K6 PRT10F4R35K6 T10F4R43K9 PRT10F4R43K9 T10F4R72K3 PRT10F4R72K3 Manufacturer PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm 20600 35900 112100 163500 400300 898400 1737900 2824200 479901 5328200 903350 8787400 1956117 13730400 6453800 1950414 1950414 PF10F1R400W PF10F1R800W PF10F1R1K20 PR5505-17A PR5505-17 PR5510-17A PR5510-17 PR552-17A 552-17A PR552-17 552-17 PR555-17A 555-17A PR550-17A PR555-17 550-17A 555-17 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PG/IPC 135500 266000 400300 1075300 316618 1520700 2596900 479901 5047800 PR4405-15A PR4405-15 PR4410-15A PR4410-15 442-15A PR442-15A PR442-15 442-15 PR445-15A PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm 4-32 Selecting An External Resistor Ohms 9.50 9.50 9.50 9.50 9.50 9.50 9.50 9.20 Ohms 9.20 9.20 9.20 9.20 9.20 9.20 9.20 9.20 9.20 9.20 9.20 9.20 9.20 9.20 9.20 9.20 9.20 9.20 9.20 9.20 9.20 9.20 9.20 8.00 Ohms 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 Watts 26636 34200 38912 39755 39955 49248 59635 Watt Seconds 3000513 8787400 4056700 2851152 1079776 6146500 1820386 Catalog 445-15A PR445-15 PR440-15A 440-15A 445-15 PR440-15 440-15 Manufacturer PG/IPC PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC 400 800 1200 1600 2000 2355 2981 3751 4867 6601 7737 9421 11923 15001 19467 24876 30948 37683 47693 58880 69635 90001 132480 18900 32400 102200 75500 161600 98000 116700 135600 282100 341800 748700 1075400 1520800 545200 1064100 1416000 2965500 4056800 6146600 10387700 6672400 9127700 23372300 PF9F2R400W PF9F2R800W PF9F2R1K20 PF9F2R1K60 PF9F2R2K00 PF9F2R2K35 PF9F2R2K98 PF9F2R3K75 PF9F2R4K86 PF9F2R6K60 PF9F2R7K73 PF9F2R9K42 PF9F2R11K9 PF9F2R15K0 PF9F2R19K4 PF9F2R24K8 PF9F2R30K9 PF9F2R37K6 PF9F2R47K6 PF9F2R58K8 PF9F2R69K6 PF9F2R90K0 PF9F2R132K2 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm 4232 5408 8192 10368 14093 16200 16200 21143 23427 28800 31474 35138 39200 41472 46977 47219 52321 57800 240700 300200 896100 1303400 401656 2786200 2846600 693480 1211023 7322900 1564893 2494758 10984300 4917200 2966898 1560331 1559677 19071300 PR4405-16A PR4405-16 PR4410-16A PR4410-16 442-16A PR442-16A PR442-16 442-16 552-18A PR445-16A 445-16A 552-18 PR552-18 PR445-16 440-16A 445-16 555-18A PR555-18A PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PG/IPC PG/IPC PG/IPC PowerOhm Selecting An External Resistor Ohms 8.00 8.00 8.00 8.00 7.30 Ohms 7.30 7.30 7.30 7.30 7.30 7.30 7.30 7.30 7.30 7.30 7.30 7.30 7.30 7.30 7.30 7.30 7.00 Ohms 7.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 7.00 6.50 Ohms 6.50 6.50 6.50 6.50 6.50 6.50 6.50 6.40 Ohms 6.40 6.40 6.40 6.40 Watts 64800 70477 78475 80000 Watt Seconds 10510600 3325398 5345909 15704400 Catalog PR440-16 440-16 555-18 PR555-18 4-33 Manufacturer PowerOhm PG/IPC PG/IPC PowerOhm 1200 1600 1868 2920 3826 3861 5095 6139 7475 8545 11680 12738 12754 14782 18250 19264 26200 131000 77700 107400 164245 199500 267369 598900 896100 566990 2259300 359925 359925 2476600 3964700 656981 PR2205-10A PR2205-10 PR2210-10A PR2210-10 222-10A PR222-10A 222-10 PR222-10 PR225-10A 225-10A PR225-10 225-10 220-10A PR220-10A PR220-10 220-10 PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PG/IPC 400 1200 1600 1792 2800 4732 7383 11251 14812 23548 36912 55001 81648 127575 157500 19300 123900 77000 77800 107500 269500 765100 436200 802700 2330100 4610000 5083700 10141900 21021300 34493700 PF7R400W PF7R1K20 PF7R1K60 PR7R1K79 PF7R2K80 PR7R4K73 PF7R7K38 PF7R11K2 PF7R14K8 PF7R23K5 PF7R36K9 PF7R55K0 PF7R81K6 PF7R127K7 PF7R157K7 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm 2106 2600 3438 4394 5466 6656 8424 92600 90400 188100 256400 599000 717000 1086300 PF6F5R2K10 PF6F5R2K60 PF6F5R3K43 PF6F5R4K39 PF6F5R5K46 PF6F5R6K65 PF6F5R8K42 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm 4326 6553 8294 12960 256300 716900 1086200 2167000 PR4405-17A PR4405-17 PR4410-17A PR4410-17 PowerOhm PowerOhm PowerOhm PowerOhm 4-34 Selecting An External Resistor Ohms 6.40 6.40 6.40 6.40 6.40 6.40 6.40 6.40 6.40 6.00 Ohms 6.00 6.00 6.00 6.00 6.00 6.00 6.00 6.00 6.00 6.00 5.70 Ohms 5.70 5.70 5.70 5.70 5.70 5.70 5.70 5.70 5.70 5.70 5.70 5.70 5.70 5.70 5.70 5.40 Ohms 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 Watts 16000 17529 23040 26292 33177 39148 58430 58718 64000 Watt Seconds 3568300 574859 5858300 719851 4302500 1231840 4818224 4929414 13460900 Catalog PR442-17A 442-17A PR442-17 442-17 PR445-17A 445-17A 440-17A 445-17 PR445-17 Manufacturer PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PG/IPC PG/IPC PowerOhm 7776 12150 15000 21600 28008 29400 38400 42015 60000 62551 1086200 1857400 3171800 5176500 1960167 8238200 6392400 1981674 12900000 2135190 PR5505-19A PR5505-19 PR5510-19A PR5510-19 552-19A PR552-19A PR552-19 552-19 PR555-19A 555-19A PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC 1600 1846 2280 3853 4793 4938 5836 6525 11029 11542 16314 16461 20520 24694 27930 8200 61700 90300 212300 449200 260816 612000 421193 905640 1857400 880744 880744 5176500 1781970 8238200 PR2205-11A PR2205-11 PR2210-11A PR2210-11 PR222-11A 222-11A PR222-11 222-11 225-11A PR225-11A 225-11 220-11A PR225-11 220-11 PR220-11 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC PowerOhm 1200 1382 1670 1670 1749 1949 2680 2680 2856 3650 4541 5080 5080 97000 59900 55700 81800 61700 61700 182900 185000 154800 207900 444300 385200 401000 PR5F4R1K20 PR5F4R1K38 T5F4R1K67 PRT5F4R1K67 PR5F4R1K74 PR5F4R1K94 PRT5F4R2K68 T5F4R2K68 PR5F4R2K85 PR5F4R3K65 PR5F4R4K54 PRT5F4R5K8 T5F4R5K8 PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC Selecting An External Resistor Ohms 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.40 5.00 Ohms 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 4.80 Ohms 4.80 4.80 4.80 4.80 4.80 Watts 5529 5780 5780 6998 7280 7280 8640 12000 12000 13500 19440 20300 20300 22000 22000 27993 34560 37700 37700 43740 48100 48100 51900 51900 54000 104000 104000 Watt Seconds 603100 169000 500700 902500 328000 809200 1540500 699000 3328300 2973600 4904100 738000 5451100 717000 5451100 3607800 6164200 2310000 9294800 7276600 712100 1845000 712100 1953000 11877300 3444000 29551700 Catalog PR5F4R5K52 T5F4R5K78 PRT5F4R5K78 PR5F4R6K99 T5F4R7K28 PRT5F4R7K28 PR5F4R8K64 T5F4R12K0 PRT5F4R12K0 PR5F4R13K5 PR5F4R19K4 T5F4R20K3 PRT5F4R20K3 T5F4R22K0 PRT5F4R22K0 PR5F4R27K9 PR5F4R34K5 T5F4R37K7 PRT5F4R37K7 PR5F4R43K7 PRT5F4R48K1 T5F4R48K1 PRT5F4R51K9 T5F4R51K9 PR5F4R54K0 T5F4R104K0 PRT5F4R104K0 4-35 Manufacturer PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm 6480 8000 12500 18000 22848 24500 30978 32000 34269 36125 46464 50000 51028 76534 98000 98000 868900 1412100 2775300 4658800 1603773 6865200 1651395 5593300 959801 11352000 3891643 11217400 1733701 3651418 6865200 25630100 PR4405-18A PR4405-18 PR4410-18A PR4410-18 442-18A PR442-18A 552-20A PR442-18 442-18 PR552-20A 552-20 PR552-20 445-18A 445-18 PR5510-20 PR445-18 PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm 2580 2580 4036 4590 4590 129400 185000 395900 401000 500700 PRT4F8R2K58 T4F8R2K58 PR4F8R4K03 T4F8R4K59 PRT4F8R4K59 PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm 4-36 Selecting An External Resistor Ohms 4.80 4.80 4.80 4.80 4.80 4.80 4.80 4.80 4.80 4.80 4.80 4.80 4.80 4.80 4.80 4.80 4.80 4.80 4.80 4.80 4.80 4.80 4.80 4.80 4.80 4.50 Ohms 4.50 4.50 4.50 4.50 4.50 4.50 4.50 4.50 4.50 4.50 4.50 4.50 4.50 4.50 4.50 4.50 4.00 Ohms 4.00 4.00 4.00 4.00 4.00 4.00 4.00 Watts 5490 5490 6220 7680 8880 8880 10900 10900 19200 19200 23520 25800 25800 34600 34600 38880 58200 58200 61000 61000 69120 99300 99300 132000 132000 Watt Seconds 169000 809200 802200 1369400 260000 1674500 359000 2912200 586000 4360900 6752000 984000 6330400 628300 2310000 6468100 3696000 18507200 3916000 18507200 17575000 6159000 25969700 8077000 33527500 Catalog T4F8R5K49 PRT4F8R5K49 PR4F8R6K22 PR4F8R7K68 T4F8R8K88 PRT4F8R8K88 T4F8R10K9 PRT4F8R10K9 T4F8R19K2 PRT4F8R19K2 PR4F8R23K5 T4F8R25K8 PRT4F8R25K8 PRT4F8R34K6 T4F8R34K6 PR4F8R38K8 T4F8R58K2 PRT4F8R58K2 T4F8R61K0 PRT4F8R61K0 PR4F8R69K1 T4F8R99K3 PRT4F8R99K3 T4F8R132K0 PRT4F8R132K0 Manufacturer PG/IPC PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm 1800 2380 3042 4608 4608 5832 6184 8266 9112 13810 16200 20612 20715 22050 28800 30918 71600 133000 168400 537600 2028300 741800 152850 239950 1547800 660558 4141200 1425576 1425576 6407500 4794300 1486256 PR2205-12A PR2205-12 PR2210-12A PR2210-12 PR225-12 PR222-12A 222-12A 222-12 PR222-12 225-12A PR225-12A 220-12A 225-12 PR220-12A PR220-12 220-12 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PG/IPC 8100 10000 14400 19600 20736 25600 28207 1238300 2378800 3623500 5492100 2765900 4394700 1321116 PR4405-19A PR5505-21A PR4405-19 PR5510-21A PR4410-19 PR442-19A 442-19A PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC Selecting An External Resistor Ohms 4.00 4.00 4.00 4.00 4.00 4.00 4.00 3.90 Ohms 3.90 3.90 3.90 3.90 3.90 3.90 3.90 3.90 3.80 Ohms 3.80 3.80 3.80 3.80 3.80 3.80 3.80 3.80 3.80 3.80 3.80 3.80 3.80 3.80 3.80 3.30 Ohms 3.30 3.30 3.30 3.30 3.30 3.30 3.30 3.30 3.30 3.30 3.30 3.30 3.30 3.30 3.30 3.30 3.30 3.30 Watts 32400 40000 40000 42308 44057 57600 66084 Watt Seconds 5255300 8413000 8973900 1386961 3441020 14645800 1799627 4-37 Catalog PR5510-21 PR442-19 PR552-21A 442-19 552-21A PR445-19A 552-21 Manufacturer PowerOhm PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC 7897 14040 24960 31590 32736 45489 49108 62996 1238300 3623500 4394700 5255300 2405659 5531800 3246136 8013142 PR4405-20A PR4405-20 PR4410-20 PR442-20A 442-20A PR442-20 442-20 445-19A PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PG/IPC PG/IPC 2010 3195 3891 6080 7227 7695 9500 9788 16139 18620 24089 24212 24320 36138 38000 105400 317700 459000 1129600 182571 1238300 1982300 328491 430346 5176500 751149 1321116 3995200 2672955 8413000 PR2205-13A PR2205-13 PR2210-13A PR2210-13 222-13A PR222-13A PR222-13 222-13 225-13A PR225-13A 220-13A 225-13 PR225-13 220-13 PR220-13 PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC PowerOhm 1200 1876 2230 2775 3379 4299 6982 9251 11101 13516 21489 24977 38491 47520 75001 106920 150001 214582 61000 105500 124600 317800 380400 556400 376100 512700 1197900 1530100 3595800 2541900 5071000 8390100 15984900 26362500 41191400 70836500 PF3F3R1K20 PF3F3R1K87 PF3F3R2K23 PF3F3R2K77 PF3F3R3K37 PF3F3R4K29 PF3F3R6K98 PF3F3R9K25 PF3F3R11K1 PF3F3R13K5 PF3F3R21K4 PF3F3R24K9 PF3F3R38K4 PF3F3R47K5 PF3F3R75K0 PF3F3R106K6 PF3F3R150K0 PF3F3R214K4 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm 4-38 Selecting An External Resistor Ohms 2.70 Ohms 2.70 2.70 2.70 2.70 2.70 2.70 2.70 2.70 2.70 2.70 2.70 2.70 2.70 2.60 Ohms 2.60 2.60 2.60 2.60 2.60 2.20 2.20 2.20 2.20 2.20 2.20 2.20 2.20 2.10 Ohms 2.10 2.10 2.10 2.10 2.10 2.10 2.10 1.88 Ohms 1.88 1.88 1.88 1.88 1.88 1.88 1.88 1.88 1.88 1.88 Watts Watt Seconds Catalog Manufacturer 2764 3499 5467 9720 10500 15750 17280 21870 23452 35003 35178 38880 38880 301600 460900 928700 2588200 521631 520110 2259300 3941400 1173670 2164091 2187360 8787400 9519700 PR2205-14A PR2205-14 PR2210-14A PR2210-14 222-14A 222-14 PR222-14 PR225-14A 225-14A 220-14A 225-14 PR220-14A PR225-14 PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PowerOhm PG/IPC PG/IPC PG/IPC PowerOhm PowerOhm 12740 16640 21060 37440 44505 13370 14080 20053 22000 29860 31680 44785 49500 3882400 2824200 3503500 9519700 1126723 316618 2259300 1603773 5047800 1685270 8055100 1724576 10656500 PR4405-21A PR4405-21 PR4410-21A PR4410-21 442-21A 222-15A PR222-15A 222-15 PR222-15 225-15A PR225-15A 225-15 PR225-15 PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm PG/IPC PowerOhm 1200 1420 1767 2151 2722 3361 4443 84900 83100 168000 253600 365700 599300 266100 PF2F1R1K20 PF2F1R1K42 PF2F1R1K76 PF2F1R2K15 PF2F1R2K72 PF2F1R3K36 PF2F1R4K44 PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm 4500 6480 8820 11520 14580 15350 23026 25920 34281 35280 1015300 1552900 2588200 2259300 2476600 782447 1570711 6590600 2138364 10068900 PR2205-16A PR2205-16 PR2210-16A PR2210-16 PR222-16A 222-16A 222-16 PR222-16 225-16A PR225-16A PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC PG/IPC PowerOhm PG/IPC PowerOhm Selecting An External Resistor Ohms 1.50 Ohms 1.50 1.50 1.50 1.50 1.50 1.50 Watts 5400 5400 6144 7350 15000 19884 Watt Seconds 1325600 4418900 1075300 1941200 3171800 1308926 Catalog PR2205-17A PR222-17A PR2210-17A PR2205-17 PR2210-17 222-17A 4-39 Manufacturer PowerOhm PowerOhm PowerOhm PowerOhm PowerOhm PG/IPC Appendix A Minimum Dynamic Brake Resistance Drive Normal Duty Rating 120V, 0.5 HP 120V, 1 HP 120V, 1.5 HP 240V, 0.5 HP 240V, 1 HP 240V, 2 HP 240V, 3 HP 240V, 5 HP 240V, 7.5 HP 240V, 10 HP 240V, 15 HP 240V, 20 HP 240V, 25 HP 240V, 30 HP 240V, 40 HP 240V, 50 HP 240V, 60 HP 240V, 70 HP (1) Regen DC Bus Voltage (Vd) Minimum Ohms, External Resistors(1) Rated Continuous Power, Internal Resistors (Pdb) PowerFlex 70 PowerFlex 700 PowerFlex Product Frame Watts Frame Watts 4 40 395 A A B B C D D 395 Does not include a resistor tolerance. 70 700 48 48 48 48 48 28 40 40 36 36 0 0 1 1 1 1 2 50 50 50 50 50 50 50 60 60 48 32 48 48 48 32 19 13 10 30.4 30.4 30.4 30.4 27.4 20.9 20.9 11.2 9 9 35.8 35.8 35.8 35.8 29.5 22.7 21 11.2 9 9 7 4.6 4.6 2.1 2.1 A-2 Minimum Dynamic Brake Resistance Drive Normal Duty Rating Regen DC Bus Voltage (Vd) 400V, 0.37 kW 480V, 0.5 HP 400V, 0.75 kW 480V, 1 HP 400V, 1.5 kW 480V, 2 HP 400V, 2.2 kW 480V, 3 HP 400V, 4 kW 480V, 5 HP 400V, 5.5 kW 480V, 7.5 HP 790 for 400V and 480V 400V, 7.5 kW Drives 480V, 10 HP 400V, 11 kW 480V, 15 HP 400V, 15 kW 480V, 20 HP 400V, 18.5 kW 480V, 25 HP 400V, 22 kW 480V, 30 HP 400V, 30 kW 480V, 40 HP 400V, 37 kW 480V, 50 HP 400V, 45 kW 480V, 60 HP 400V, 55 kW 480V, 75 HP 790 for 400V 400V, 75 kW 480V, 100 HP and 480V Drives 400V, 90 kW 480V, 125 HP 400V, 110 kW 480V, 150 HP 400V, 132 kW 480V, 200 HP Minimum Ohms, External Resistors(1) Rated Continuous Power, Internal Resistors (Pdb) PowerFlex 70 PowerFlex 700 PowerFlex Product Frame Watts Frame Watts 4 40 70 700 97 61.7 63.1 121 97 61.7 63.1 50 121 97 61.7 63.1 0 50 97 97 61.7 63.1 28 0 50 97 77 61.7 63.1 C 40 0 50 55 66.9 63.1 C 40 1 50 39 66.9 63.1 D 36 1 50 24 39.9 43.3 D 36 2 50 27.8 40.2 2 50 24.6 28.2 A 48 0 50 A 48 0 50 A 48 0 B 28 B D D 25.1 21.7 17.9 18.7 18.7 18.7 15.4 9.2 9.2 4.4 4.4 3.3 Minimum Dynamic Brake Resistance Drive Normal Duty Rating 600V, 0.5 HP 600V, 1 HP 600V, 2 HP 600V, 3 HP 600V, 5 HP 600V, 7.5 HP 600V, 10 HP 600V, 15 HP 600V, 20 HP 600V, 25 HP 600V, 30 HP 600V, 40 HP 600V, 50 HP 600V, 60 HP 600V, 75 HP 600V, 100 HP 600V, 125 HP 600V, 150 HP 690V, 45 kW 690V, 55 kW 690V, 75 kW 690V, 90 kW 690V, 110 kW 690V, 132 kW (1) Regen DC Bus Voltage (Vd) 987.5 Minimum Ohms, External Resistors(1) Rated Continuous Power, Internal Resistors (Pdb) PowerFlex 70 PowerFlex 700 PowerFlex Product Frame Watts Frame Watts A A A B B C C D D 48 48 48 28 28 40 40 1135 1135 Does not include a resistor tolerance. 0 0 0 0 0 0 1 A-3 50 50 50 50 50 50 50 4 40 70 106.1 120 106.1 120 106.1 82 106.1 82 72.7 51 72.7 51 72.7 51 43.6 43.6 28.9 28.9 22.2 22.2 700 84 84 84 84 84 75.5 75.5 52 41.8 36.1 28.9 24.3 24.3 17.7 18.1 18.1 6.3 6.3 18.1 18.1 18.1 18.1 6.3 6.3
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