40 yearsA N N I V E R S A R Y 1973 - 2013 Power Electronics & Control ISO 9001:2008 Certified Power Electronics & Control MA - 116 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Accept Accept Reset Reset F/O Reset Reset Test Power Condensed Catalogue Jan 2013 Power Electronics & Control, better known by it’s brand name PECON, has been associated with Electrical & Power Industry, since 1973. Starting a small way, it has covered a long way becoming one of the most trusted name in transformer protection and temperature surveillance system. PECON is a close knit company with well qualified & trained manpower. PECON is pioneer in electronic type OTI / WTIs, for both Oil cooled and Dry type transformers. With over 50,000 installations in the field, PECON is surely the leader in India in this field. OEM list includes almost all majors in transformer industries in INDIA. Our products are also exported to European & U.S. markets. Group Company Associate Company Via L. da Vinci 54/56 - 20094 Corsico (MI) - ITALY Electronic type temperature survillience systems and ventillations fans for transformers. Positronics (Pvt) Ltd 882/2, G.I.D.C Estate, Makarpura, Vadodara : 390 010 Instrumentation Panels, Turnkey instrumentation jobs, PLC/DAS based Control Panels. PECON is committed to technical excellence and complete customer satisfaction. INDEX TR-7570 4 Channel WTS with 4-20mA TR-7570-C 4 Channel WTS with RS-485 1 TR-7570-RX 4 Channel WTS with dual 4-20mA TR-7570-CX 4 Channel WTS with 4-20mA & RS-485 TR-7576 6 Channel WTS with 4-20mA TR-7576-C 6 Channel WTS with RS-485 TR-7576-Rx 6 Channel WTS with dual 4-20mA 2 TR-7576-Cx 6 Channel WTS with 4-20mA & RS-485 TR-7576-CP 6 Channel WTS with Profibus-DP TR-7577-Rx 7 Channel WTS with dual 4-20mA 3 TR-7577-CX 7 Channel WTS with 4-20mA & RS-485 TR-7543 Single channel WTS with 4-20mA 4 TR-7543-C Single channel WTS with RS-485 TR-7544 4 Channel WTS with 4-20mA TR-7544-C 4 Channel WTS with RS-485 5 TR-7544-SP 4 Channel WTS with 4-20mA inputs i FOR DRY TYPE / CAST RESIN TRANSFORMERS 11 TPR-05 Thermistor Relay 12 ii . SFO-01 Fiber Optic Sensors & 4-20mA & RS-485 outputs.TR-7541-M Single channel WTI with 4-20mA 6 TR-7541-C Single channel WTI with RS-485 TR-7578 8 Channel WTS with 4-20mA 7 FOR DRY TYPE / CAST RESIN TRANSFORMERS TR-7578-C 8 Channel WTS with 4-20mA & RS-485 TR-8080 spl + SPT-04 4 Channel split type WTS with 4-20mA & RS-485 8 TR-7560 3 Channel WTS with 4-20mA & 0-1mA 9 S-02 Sensor Pt-100 10 JB-01 Junction Box (for 4 S-02 sensors) 3 Channel WTS TR-8080-FO+ For HT & EHT Transformer Windings FOXTR-02+ With Fiber Optics Temperature Transmitter. TRM-08 Relay Module ROM-01 Remote Output Module with 3 isolated 4-20mA outputs RWTI-400M Remote Winding Temperature indicator with 4-20mA input 14 RWTI-400C Remote Winding Temperature indicator with RS-485 from PECON WTS TR-7551 OTI & WTI with 4-20mA TR-7551-C OTI & WTI with 4-20mA & RS-485 15 TR-7552 OTI & WTI with 4-20mA TR-7552-C OTI & WTI with 4-20mA & RS-485 RWTI-500M Remote Winding Temperature Indicator with 4-20mA input. 16 RWTI-500C Remote Winding Temperature Indicator with RS-485 from PECON OIT & WTI S-07M RTD sensor for OTI & WTI with male BSP threads S-07F RTD sensor for OTI & WTI with female BSP threads 17 LR-01 Latch Relay iii FOR OIL COOLED TRANSFORMERS FOR DRY / CRTS 13 . MA-116 MA-112 16 Channel Window Annunciator 12 Channel Window Annunciator 8 Channel Window Annunciator 6 Channel Window Annunciator Power Electronics & Control MA .116 1 2 3 4 5 6 7 8 9 10 11 12 CONTROL ROOM 18 MA-108 MA-106 13 14 15 16 Accep Acceptt Reset Reset F/O Reset Reset Test Power UT-101 Temperature / Process Scanner 19 UT-102 Temperature Scanner DIMENSION 96 10 125 Figure 2 to 6 Dimension & Mounting Details Front View 96 90 20 Side View NT-935 4 Channel WTS for CRT 22 TECSYSTEM PRODUCTS T-154 4 Channel WTS for CRT NT-133 IT OTI & WTI for oil cooled transformers 23 TTG-240 Transformer Cooling Fan NOTES Application note & FAQs 24 iv . 270 VAC/DC TR-7570 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Inputs RTD 1 RTD 2 RTD 3 RTD 4 Fault High Outputs Very High Fan + NC 25 26 28 29 30 Input TR-7570-C 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1718 19 20 21 22 23 24 Inputs RTD 1 RTD 2 RTD 3 RTD 4 Fault High Outputs Very High Fan RS-485 A B Aux Supply 85 . TR-7570 Options : Output Signals Remote output – 1 (4-20mA) Remote output – 2 (4-20mA) RS-485 (MODBUS protocol) TR-7570 YES NO NO TR-7570-C NO NO YES TR-7570-Rx YES YES NO TR-7570-Cx YES NO YES Terminal details : Inputs RTD 1 RTD 2 RTD 3 RTD 4 Fault High Outputs Very High Fan Input Remote o/p Aux Supply 85 . Supply : 85-270 VAC/DC (Optionally 20-50 VAC/DC). 1 APPLICATION NOTE Aux Supply Remote o/p RS-485 85 .270 VAC/DC TR-7570-Rx 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1718 19 20 21 22 23 24 Inputs RTD 1 RTD 2 RTD 3 RTD 4 Fault High Outputs Very High Fan + + NC 39 40 41 42 28 29 30 Input TR-7570-Cx 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1718 19 20 21 22 23 24 - + NC 39 40 41 42 28 29 30 Note : For dimension & mounting details. Aux. Independent set of setpoints for 4th Channel. Fan. Temperature indication range : – 50 to 300 °C.2 on Page 20.270 VAC/DC NC 25 26 28 29 30 Input Remote o/p 1 2 Aux Supply 85 .Transformer Protection Relay TR-7570 Salient features : Four channel temperature scanner. 4-20mA / RS-485 output for remote temperature indication / DAS / SCADA application (view options).270 VAC/DC A B TECSYSTEM DIMENSION CONTROL ROOM OIL COOLED DRY / CAST RESIN . please refer Figure . High (Alarm) & Very High (Trip). Four relay outputs for Fault. 2 .2 on Page 20. Supply 85-270 VAC-DC TR-7576-C RS-485 A B G Fault High V. Supply 85-270 VAC-DC APPLICATION NOTE Inputs RTD 1 RTD 2 RTD 3 RTD 4 RTD 5 RTD 6 TR-7576-CP Profibus DP A B G Fault High V. Fan exerciser function. Independent set of setpoints for 6th Channel.High Fan Input Aux.High 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 41 42 43 21 22 23 24 25 26 27 28 29 30 31 Inputs Outputs RTD 5 RTD 6 Input Fan Aux. Supply 85-270 VAC-DC TECSYSTEM RTD 1 RTD 2 RTD 3 RTD 4 Remote o/p 1 2 Fault High V. Fan. Aux. OIL COOLED TR-7576 Options : Output Signals TR-7576 YES NO NO NO TR-7576-C NO NO YES NO TR-7576-Rx YES YES NO NO TR-7576-Cx TR-7576-CP YES NO YES NO NO NO NO YES CONTROL ROOM Remote output – 1 (4-20mA) Remote output – 2 (4-20mA) RS-485 (MODBUS protocol) Profibus. Test Function to simulate operation of WTS. Supply : 85-270 VAC/DC (Optionally 20-50 VAC/DC). Supply 85-270 VAC-DC DIMENSION RTD 1 RTD 2 RTD 3 RTD 4 Remote o/p Fault High V.High 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 41 42 43 21 22 23 24 25 26 27 28 29 30 31 Note : For dimension & mounting details. please refer Figure .DP protocol Terminal details : Inputs Outputs RTD 5 RTD 6 Input Fan Aux.DRY / CAST RESIN Transformer Protection Relay TR-7576 Salient features : Six channel temperature scanner. Temperature indication range : – 20 to 250 °C. High (Alarm) & Very High (Trip). 4 Relay o/ps for Fault. Supply 85-270 VAC-DC TR-7576-Cx + 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 39 40 41 42 21 22 23 24 25 26 27 28 29 30 31 Outputs Input Fan Aux.High TR-7576-Rx + + 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 39 40 41 42 21 22 23 24 25 26 27 28 29 30 31 Inputs RTD 1 RTD 2 RTD 3 RTD 4 RTD 5 RTD 6 Remote o/p RS-485 A B Outputs Fault High V.High TR-7576 + 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Inputs RTD 1 RTD 2 RTD 3 RTD 4 RTD 5 RTD 6 21 22 23 24 25 26 27 28 29 30 31 Outputs Input Fan Aux. 4-20mA / RS-485 / Profibus output for remote temperature indication / DAS / SCADA application (refer options). TR-7577-Rx Options : Output Signals Remote output – 1 (4-20mA) Remote output – 2 (4-20mA) RS-485 (MODBUS protocol) TR-7577-Rx YES YES NO TR-7577-Cx YES NO YES Terminal details : Inputs RTD 1 RTD 2 RTD 3 RTD 4 RTD 5 RTD 6 RTD 7 Remote o/p Outputs Input TR-7577-Rx + 1 + 2 FLT/ High V. Fan exerciser function. Supply 85-270 VAC-DC TR-7577-Cx + RS-485 A B 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 39 40 41 42 23 24 25 26 27 28 30 31 Note : For dimension & mounting details. please refer Figure . 3 APPLICATION NOTE TECSYSTEM DIMENSION CONTROL ROOM OIL COOLED DRY / CAST RESIN . Test Function to simulate operation of WTS. Supply: 85-270 VAC/DC (Optionally 20-50 VAC/DC).2 on Page 20. Supply 85-270 VAC-DC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 39 40 41 42 Inputs RTD 1 RTD 2 RTD 3 RTD 4 RTD 5 RTD 6 RTD 7 Remote o/p 23 24 25 26 27 28 30 31 Outputs High V. Three relay outputs for High (Alarm).Transformer Protection Relay TR-7577-Rx / TR-7577-Cx Salient features : Seven channel temperature scanner. Independent set of setpoints for 7th Channel.High Fan FLT/ Input Aux. Temperature indication range : – 20 to 250 °C. 4-20 mA / RS-485 output for remote temperature indication and / or DAS / SCADA application (refer options).High Fan Aux. Very High (Trip) and Fault / Fan (configure either as Fan or Fault relay at site). Aux. CONTROL ROOM OIL COOLED TR-7543 Options : Output Signals Remote output (4-20mA) RS-485 (MODBUS protocol) TR-7543 YES NO TR-7543-C NO YES DIMENSION Terminal details : TECSYSTEM Input Aux.DRY / CAST RESIN Transformer Protection Relay TR-7543 Salient features : Single channel temperature indicator. Test function to simulate operation of WTI. Temperature indication range : -20 to 250 °C. please refer Figure . 4 . 4-20mA / RS-485 output for remote temperature indication and / or DAS / SCADA application (refer options). Fan. Enclosure : Noryl (Fire retardant material). Alarm & Trip. Supply : 85-270 VAC/DC (Optionally 20-50 VAC/DC).3 on Page 20. 4 Relay outputs for Fault. Aux. Fan relay is rated for 10A @ 230VAC. Supply 85-270 VAC-DC 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Outputs Fault Fan Alarm Trip Input RTD 28 29 Output TR-7543-C RS-485 A B G E L N APPLICATION NOTE 1 2 3 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 30 31 32 Note : For dimension & mounting details. Supply 85-270 VAC-DC Outputs Fault Fan Alarm Trip Input RTD Output Remote o/p TR-7543 + E L N 1 2 3 Input Aux. Aux. please refer Figure . Test function to simulate operation of WTS. Supply : 85-270 VAC/DC (Optionally 20-50 VAC/DC). Supply 85-270 VAC-DC 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 2122 23 24 25 26 27 30 31 32 Outputs Fault Fan Alarm Trip CH # 1 4-20mA Inputs CH # 2 CH # 3 CH # 4 Output Remote o/p NC E L N NC NC NC + 1 2 3 4 5 6 7 8 9 10 14 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 Note : For dimension & mounting details. Supply 85-270 VAC-DC 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 2122 23 24 25 26 27 28 29 Outputs Fault Fan Alarm Trip RTD 1 RTD 2 Inputs RTD 3 RTD 4 Output TR-7544-C RS-485 A B G E L N 1 2 3 Input Aux. Fan. Temperature indication range : – 20 to 250 °C. TR-7544 CONTROL ROOM Output RTD 4 Options : Signals Input signal Remote output signal (4-20mA) RS-485 (MODBUS protocol) TR-7544 RTD.Transformer Protection Relay TR-7544 Salient features : Four channel temperature scanner. Pt-100 YES NO TR-7544-C RTD. Supply 85-270 VAC-DC Outputs Fault Fan Alarm Trip RTD 1 RTD 2 Inputs RTD 3 Remote o/p TR-7544 - E L N 1 2 3 Input Aux. Four relay outputs for Fault. Fan relay is rated for 10A @ 230VAC.3 on Page 20. Enclosure : Noryl (Fire retardant material). Pt-100 NO YES TR-7544-SP 4-20mA YES NO Terminal details : Input Aux. Alarm & Trip. 4-20mA / RS-485 output for remote temperature indication and / or DAS / SCADA application (refer options). 5 APPLICATION NOTE TR-7544-SP + + + + - TECSYSTEM + DIMENSION OIL COOLED DRY / CAST RESIN . please refer Figure . Temperature indication range : – 50 to 300 °C.270 VAC/DC TECSYSTEM Remote o/p TR-7541-M + NC 1 2 3 4 5 Output Input RTD 4142 43 Output 6 7 8 9 Outputs Alarm Trip 10 11 12 Input Aux Supply 85 .2 on Page 20.270 VAC/DC Remote o/p TR-7541-C + RS-485 A B G NC 1 2 3 4 5 4142 43 6 7 8 9 10 11 12 APPLICATION NOTE Note : For dimension & mounting details. 4-20mA / RS-485 output for remote temperature indication and / or DAS / SCADA application (refer options). OIL COOLED TR-7541-M TR-7541-M CONTROL ROOM Options : Output Signals Remote output (4-20mA) TR-7541-M YES NO TR-7541-C YES YES DIMENSION RS-485 (MODBUS protocol) Terminal details : Output Input RTD Terminals not provided Outputs Alarm Trip Input Aux Supply 85 .DRY / CAST RESIN Transformer Protection Relay TR-7541-M Salient features : Single channel temperature scanner. Aux. Enclosure : Weatherproof Aluminum die cast (IP-65). 6 . with polycarbonate viewing window. Two relay outputs for Alarm & Trip. Supply : 85-270 VAC/DC (Optionally 20-50 VAC/DC). Supply o/p 85-270 RS-485 NC + 25 26 28 29 30 31 32 33 34 3536 37 38 39 40 41 42 71 72 73 Note : For dimension & mounting details. Fan. 4-20mA / RS-485 output for remote temperature indication / DAS / SCADA application (refer options). Supply : 85-270 VAC/DC (Optionally 20-50 VAC/DC). please refer Figure . Aux.Transformer Protection Relay TR-7578 Salient features : OIL COOLED Eight channel temperature scanner. Temperature indication range : – 20 to 250 °C. Four relay outputs for Fault. 7 APPLICATION NOTE - VAC-DC A B G TECSYSTEM DIMENSION CONTROL ROOM TR-7578 DRY / CAST RESIN . Options : Output Signals Remote output (4-20mA) RS-485 (MODBUS protocol) TR-7578 YES NO TR-7578-C YES YES Terminal details : Inputs RTD 1 RTD 2 RTD 3 RTD 4 RTD 5 RTD 6 RTD 7 RTD 8 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 TR-7578 Output Input Fan Outputs Alarm Trip Fault Remote Aux. Supply o/p 85-270 + VAC-DC NC 25 26 28 29 30 31 32 33 34 3536 37 38 39 40 41 42 Inputs RTD 1 RTD 2 RTD 3 RTD 4 RTD 5 RTD 6 RTD 7 RTD 8 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 TR-7578-C Output Input Fan Alarm Outputs Trip Fault Remote Aux.1 on Page 9. Alarm & Trip. SPT-04 Schematic Diagram : 0 3 DIMENSION White Red TECSYSTEM Terminal details : Data Bus P+ P. Supply : 85-270 VAC/DC (Optionally 20-50 VAC/DC). Aux. For dimension & mounting details of SPT-04.D+ D- SPT-04 1 2 3 4 5 6 7 8 9 10 11 12 61 62 63 64 Note : For dimension & mounting details of TR-8080 spt.2 on Page 20. please refer Figure .270 VAC/DC Remote o/p Fault RS-485 A B G TR-8080 spt + NC 61 62 63 64 65 6667 68 69 70 71 Inputs 72 73 74 75 7677 78 79 80 81 82 83 84 85 86 87 Data Bus APPLICATION NOTE RTD 1 RTD 2 RTD 3 RTD 4 P+ P. OIL COOLED Temperature indication range : – 50 to 300 °C. Enclosures : (A) TR-8080 spt : Weatherproof Aluminum die cast (IP-65). 8 .D+ D- Outputs Red Input Alarm Trip Fan Aux Supply 85 . Din Rail mount. Models with more TR-8080 spt CONTROL ROOM i/p channels are also available. simplifies the wiring. please refer Figure . Ease in case of replacement of RTD / RTD Module or Main scanner unit.5 on Page 21. 4-20mA / RS-485 output for remote temperature indication / DAS / SCADA application. Alarm & Trip.DRY / CAST RESIN Transformer Protection System (Spilt Type) TR-8080 spt + SPT-04 Salient features : Split type architecture. Base . (B) SPT-04 : 35 mm. PECON proprietary “Data Bus” for communication between TR-8080 spt & SPT-04. Four relay outputs for Fault. Fan. SPT-04 is designed for four S-02 inputs.Polyamide. Temperature indication range : 0. ( Optionally 85-270 VAC/DC & 20-50 VAC/DC ). Aux. Two relay outputs – for Alarm & Trip. M-6 THREADS FRONT VIEW SIDE VIEW MOUNTING DETAILS Note : All dimensions are in mm. Figure . 4-20mA & 0-1mA outputs for remote temperature indication and / or DAS / SCADA application. TR-7560 Terminal details : Outputs Inputs RTD CH-R RTD CH-Y RTD CH-B Outputs Alarm Trip Input Aux Supply 110 / 240 VAC Remote o/p 4-20 mA 0-1 mA TR-7560 + + 240 110 N 1 2 3 4 5 6 7 8 9 10 11 12 13 15 16 17 18 19 20 21 260 235 135 5 235 + 0 315 330 EARTHING CONNECTION CABLE ENTRY MOUNTING PLATE 3 Nos. Three channel temperature scanner.Transformer Protection Relay TR-7560 Salient features : Solid-state design.9 °C.1 9 APPLICATION NOTE TECSYSTEM 5 205 + 0 DIMENSION Dimension & Mounting Details for TR-7560 & TR-7578 : CONTROL ROOM OIL COOLED DRY / CAST RESIN .0 to 199. Supply : 240 / 110 VAC. 50 / 60 Hz for 1 min. Standard lead length : 1. 5 meter(s) ( other lengths are available on demand ). Extention leads teflon over teflon insulated silver plated copper wires 24/7/32 AWG terminated on Bootlace ferrules (Standard lead length is 1000 mm +25 mm ) These sensors are tested for : 1) Dimensions 2) Calibration at 50OC.DRY / CAST RESIN RTD Sensor S-02 Salient features : Suitable to all our WTI / WTS. 3.100 JB-01 Red Red . Dimension & Mounting Details : TECSYSTEM APPLICATION NOTE 10 Pt . Pt-100 type sensor ( IEC-60751. Note : 1) RTD Sensor S-02 is suitable over -50 to +200 OC temperature range 2) Sensor S-02 is Class B (IEC-60751) permissible error OC = ± [ 0. 100 OC & at 180 OC 3) Dielectric Strength : 2KV rms for 1 min. Class B ). 4 mm Red Red 40 mm max. 3 wire. 3) Longer lead lengths are available for specific needs. Junction Box DIMENSION JB-01 Salient features : Suitable for four S-02 sensor terminations. Temperature range : – 50 to 200 °C. Flammability : UL 94 HB. OIL COOLED S-02 Sensor details : White RTD Sensor S-02 Pt-100 element inside heat shrink sleeve White CONTROL ROOM Max. Protection : IP-66 / NEMA 4X. Material : ABS. Dielectric strength : 2K VAC rms.5.3 + (.005 x t) ] where t is the temperature in OC. 2. 1. 270 VAC/DC Remote o/p Fault RS-485 A B G TR-8080-FO + NC 61 62 63 64 65 6667 68 69 70 71 72 73 74 75 7677 78 79 80 81 82 83 84 85 86 87 Note : For dimension & mounting details of TR-8080-FO. please refer Figure .D+ D- Outputs Input Alarm Trip Fan Aux Supply 85 . Probes + Power Supply FO Temp.50 VAC/DC ). CONTROL ROOM APPLICATION NOTE TECSYSTEM DIMENSION SFO-01 * FOXTR-02 * * These parts are brought to you by PECON from our associates M/s. 11 OIL COOLED DRY / CAST RESIN . Four relay outputs for Fault. Probe H. Teflon Jacketed Fiber Optic Temp. Aux. Temperature indication range : – 45 to 200 °C.1 °C USB 2.5(W) x 100(L) mm.0 protocol : MODBUS RTU RS-485 protocol : MODBUS RTU POWER : 12 .) Mounting : 35 mm.5 W max. Alarm & Trip.2 on Page 20. TR-8080-FO Salient features & Specifications : Inputs : 3 fiber optic sensors (SFO-01) Measurement range : – 45 to 200 °C Accuracy : +/. Fan. Connector . T. Sensor Jacket : Teflon Sensor diameter : Cable . 4-20mA and RS-485 MODBUS RTU slave protocol available for remote temperature indication / DAS / SCADA application. Probe FO Temp. Schematic Diagram : Temperature Display & Scanner Unit TR-8080-FO TR-8080-FO Data Bus Fiber Optic Temperature Transmitter FOXTR-02 Fiber Optic Temperature Sensors SFO-01 64 63 62 61 RS-485 B RS-485 A 3 Nos. Probe FO Temp.10 mm. Supply : 85-270 VAC/DC ( Optionally 20 .24 VDC ( 2. DIN rail Dimension : 114( H ) x 22.4 mm. Coils Location : Marshalling Box CAST RESIN / DRY TYPE TRANSFORMER Terminal details : Data Bus P+ P. OSENSA.Transformer Protection System (with fiber optic sensors & transmitter) TR-8080-FO + FOXTR-02 + SFO-01 Salient features : Fiber optic sensor simplify the sensor installation in the For HT & EHT Transformer Windings windings of the transformer where very high voltage insulation is required. Canada. C 70 80 90 100 110 120 Wire Colour (DIN 44081) White / Brown White / White Green / Green Red / Red Brown / Brown Grey / Grey Blue / Blue White / Blue Black / Black Blue / Red Our Part no. Lead Length : 500 mm. (+/.DRY / CAST RESIN Thermistor Relay TPR-05 Salient features : Input : PTC Thermistors. Trip & Fan control.6 on Page 21. PTS-70 PTS-80 PTS-90 PTS-100 PTS-110 PTS-120 PTS-130 PTS-140 PTS-150 PTS-160 TPR-05 F A T Sensors for fan Fan Alm Trp Sensor Fault Power Test Relay Fan Alm Trp Trip Reset Power Electronics & Control Email : pecon@vsnl. Relay outputs for Alarm. please refer Figure .Noryl. Switches Trip Reset Sensors for alarm TECSYSTEM Respone Temp. DIMENSION Wiring Diagram of PTCs & TPR-05: Push-Button to reset Trip Relay Sensors for trip Thermistor Sensor Color Code : DIP 1 2 3 4 5 6 7 8 19 20 21 22 23 24 Prog. Choice of wide temperature range for sensors ( 70 to 160 °C ). Aux.270 VAC/DC. Enclosure : Cover . Assembly : Single sensor. Trip & Fan control. Diameter : Max. 4 mm. Mounting : DIN rail TS-35 / TS-35D as per DIN 46277-3. Up to 3 PTCs can be connected in series for three phase OIL COOLED Terminal details : windings in series for Alarm. Supply 20-270 VAC-DC Outputs Fan Alarm Trip Inputs Trip Thermistors Reset F A T CONTROL ROOM 1 2 4 5 6 7 8 9 10 11 12 19 20 21 22 23 24 Note : For dimension & mounting details.Polycarbonate & Base . Supply : 20 . Thermistor Sensors Salient features : Sensor : PTC thermistor. TPR-05 TPR-05 Input Aux.10 mm) (Other lead lengths available on demand).com 3 PTCs in series 20-270 VAC/DC 1 2 4 Fan Alarm Trip 5 6 7 8 9 10 11 12 APPLICATION NOTE 130 140 150 160 Aux.Supply 20-270 VAC/DC Contactor for fan Alarm Trip Coil SUPPLY 12 . Aux. TR-7570-Cx. Aux. Built in power supply & as such no need of external 24VDC power supply module. Linearity : +/. Economical and saves space. TR-7577-Cx.0. Mounting : Din rail TS35 / TS-35D as per DIN 46277-3.270 VAC/DC Outputs RLY-1 RLY-2 RLY-3 RLY-4 RLY-5 RLY-6 RLY-7 RLY-8 TRM-08 E 1 2 3 4 5 6 7 8 9 10 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 Salient features : Input : RS-485 signal from WTS type TR-7570-C.270 VAC/DC RS-485 A B G Remote o/p # 1 Remote o/p # 2 Remote o/p # 3 TECSYSTEM DIMENSION Remote Output Module ROM-01 CONTROL ROOM OIL COOLED DRY / CAST RESIN . max load 300 ohms. TR-7576-Cx. TRM-08 Terminal details : Inputs (External N/O contacts) COM R1 R2 R3 R4 R5 R6 R7 R8 Input Aux Supply 85 . Supply : 85-270 VAC/DC ( Optionally 20-50 VAC/DC ). Can be driven from signal relay contacts for connecting power circuits. ROM-01 Terminal details : Input Aux Supply DATABUS Outputs ROM-01 + + + E 1 2 3 41 42 43 11 12 13 14 15 16 17 18 13 APPLICATION NOTE 85 .270 VAC/DC ( Optionally 20 . Outputs : Three isolated 4-20mA current signals corresponding to first three RTD channels of WTS.50 VAC/DC ). Can be used for multiplying relay contact outputs. TR-7576-C.Relay Module TRM-08 Salient features : External relay module with built in power supply. Mounting : DIN rail TS35 / TS-35D as per DIN 46277-3.5%. Supply : 85 . TR-7544-C & TR-7578-C. Supply : 85-270 VAC/DC ( Optionally 20-50 VAC/DC ).4 on Page 21. Aux. channel. relay status and maximum temperature recorded by WTS can be viewed. Supply 85-270 VAC-DC RS-485 MASTER APPLICATION NOTE 4-20mA Output RWTI-400C + A B G 1 2 9 10 14 15 16 Note : For dimension & mounting details. Supply : 85-270 VAC/DC ( Optionally 20-50 VAC/DC ). which can be selected for any channel or current max. Displays : Set points. Supply 4-20mA Input 85-270 VAC-DC - RWTI-400M 4-20mA Output RWTI-400M + + 1 2 9 10 15 16 CONTROL ROOM Remote Winding Temperature Indicator RWTI-400C Salient features : Input signal : RS-485 from PECON WTS only. 14 . Provides one repeat isolated 4-20mA current output signal. Terminal details : Outputs Inputs Aux. Provides one repeat isolated 4-20mA current output signal for use on SCADA or additional indication. Enclosure : ABS ( IP-54 for face ).DRY / CAST RESIN Remote Winding Temperature Indicator RWTI-400M Salient features : Input signal : 4-20mA current signal. DIMENSION RWTI-400C Schematic details for RWTI-400C : Field WTS Control Room Isolated Current Signal RWTI-400C 4-20 mA Output TECSYSTEM TR-7570-C TR-7570-Cx TR-7576-C TR-7576-Cx TR-7577-Cx TR-7544-C TR-7578-C A B RS-485 14 A 15 B Terminal details : Outputs Inputs Aux. OIL COOLED Enclosure : ABS ( IP-54 for face ). Aux. please refer Figure . for use on SCADA or additional indication. TR-7551 Options : Output Signals OT Remote output (4-20mA) WT Remote output (4-20mA) RS-485 (MODBUS protocol) TR-7551 YES YES NO TR-7551-C YES YES YES TR-7552 YES YES NO TR-7552-C YES YES YES Terminal details : Inputs RTD Outputs Input CT 5A COM Terminals not provided Outputs OT Alarm OT Trip WT Alarm WT Trip Input Aux Supply 85 . Temperature indication range : Oil : – 40 to 150 °C Winding : – 40 to 200 °C. Five relay outputs (Refer terminal details given below). Supply : 85-270 VAC/DC ( Optionally 20-50 VAC/DC ). Anticipatory Fan & Fan exerciser function. For winding simulation .270 VAC/DC Remote o/p OT WT TR-7552-C + + CT RS-485 A B G 5A COM Fan1 Fan2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1718 19 20 21 22 23 24 25 26 27 28 29 Note : For dimension & mounting details. 15 APPLICATION NOTE TECSYSTEM CT RS-485 A B G 5A COM Fan DIMENSION CONTROL ROOM OIL COOLED DRY / CAST RESIN .270 VAC/DC Remote o/p OT WT TR-7552 Fan1 Fan2 + + 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1718 19 20 21 22 23 24 25 26 27 28 29 Inputs RTD Outputs Input OT Alarm WT Alarm Outputs OT/WT Trip Input Aux Supply 85 .2 on Page 20.270 VAC/DC Remote o/p OT WT TR-7551-C + + 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 Inputs RTD Outputs Input CT 5A COM Terminals not provided Outputs OT Alarm WT Alarm OT/WT Trip Input Aux Supply 85 . Test function to simulate operation of OTI & WTI. with polycarbonate viewing window.270 VAC/DC Remote o/p OT WT TR-7551 Fan + + 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 Inputs RTD Outputs Input OT Alarm OT Trip Outputs WT Alarm WT Trip Input Aux Supply 85 .RTD Pt-100. IEC-60751.T.C. Enclosure : Weatherproof Aluminum die cast (IP-65). (OTI & WTI) Winding temperature algorithm as per IEC/IEEE standard. Aux.Transformer Protection Relay TR-7551 / TR-7552 Salient features : Displays both Oil & Winding temperatures simultaneously. Sensors : For oil temp . please refer Figure . Supply : 85-270 VAC/DC (Optionally 20-50 VAC/DC).4 on Page 21. Provides two repeat isolated 4-20mA current output OIL COOLED signals. Aux. 16 . please refer Figure . Simultaneously displays both oil & winding temperatures. Enclosure : ABS (IP-54 for face). Supply : 85-270 VAC/DC (Optionally 20-50 VAC/DC). one for Oil & one for Winding temperatures for use on SCADA or additional indication. Supply 85-270 VAC-DC RS-485 MASTER APPLICATION NOTE OT WT A B G RWTI-500C + + 1 2 3 4 9 10 14 15 16 Note : For dimension & mounting details. one for Oil & one for Winding temperatures for use on SCADA or additional indication. RWTI-500M Terminal details : 4-20mA Outputs Input Aux. DIMENSION RWTI-500C Schematic details for RWTI-500C : Field OTI / WTI Control Room Isolated Current Signals OTI signal TECSYSTEM RWTI-500C TR-7551-C TR-7552-C TR-7557-C TR-7558-C RS-485 A 8 B 9 14 A 15 B 4-20 mA WTI signal 4-20 mA Terminal details : 4-20mA Outputs Input Aux. Aux.DRY / CAST RESIN Remote Winding Temperature Indicator RWTI-500M Salient features : Input signals : 4-20mA current signal for OT & WT. Enclosure : ABS (IP-54 for face). Supply 85-270 VAC-DC 4-20mA Inputs OT WT OT WT RWTI-500M + + + + CONTROL ROOM 1 2 3 4 9 10 13 14 15 16 Remote Winding Temperature Indicator RWTI-500C Salient features : Input signals : 4-20mA current signal for OT & WT. Provides two repeat isolated 4-20mA current output signals. Simultaneously displays both oil & winding temperatures. 50 / 60 Hz for 1 min. Supply (Jumper Selectable) 17 APPLICATION NOTE 1 2 6 7 8 9 10 11 12 13 TECSYSTEM LR-01 DIMENSION Senses momentary contact from pressure switch and OIL COOLED DRY / CAST RESIN . 50/60 Hz. 3 wire. Terminal details : Input Pressure Switch Contact Outputs Alarm Trip LR-01 Aux. Manually reset button for un-latching the relay. Pt-100 type sensor (IEC-60751. Wide supply voltage. LED indication for latched Alarm & Trip contacts. Temperature range : – 50 to 200 °C. AC Supply : 120 / 240 (+/.15%) VAC. Class B). Mounting : (1) S-07M : Free rotating with ½” BSP (M) threads. DC Supply : 24 (+25%) / 48 (+20%) / 125 (+20%) VDC. (2) S-07F : Free rotating with ½” BSP (F) threads. selection with simple jumper settings. (Other threads are available on demand). Available in duplex style (S-07MD & S-07FD) also.RTD sensors for OTI & WTI S-07M & S-07F Salient features & Specifications: Suitable for all our OTI & WTI. Dielectric strength : 2K VAC rms. S-07M S-07F CONTROL ROOM Input Jumper Selction Voltage J1 120 VAC 2-3 240 VAC 3-4 24 VDC 1-2 48 VDC 2-3 125 VDC 3-4 E Latch Relay (LR-01) LR-01 Salient features & Specifications : operates Alarm & Trip contacts. DRY / CAST RESIN Annunciator MA-106 / MA-108 / MA-112 / MA-116 Salient features : Power Electronics & Control MA . Mounting : Flush / Panel type. 12 and 16 windows.270 VAC/DC Outputs Alarm Ring Back Test E 33 34 35 36 37 38 39 40 41 44 45 46 47 Channel Inputs DIMENSION 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 F/O Reset Common MA-112 (12 channels) Accept Reset Keys Silence Input Aux Supply 85 . Supply : 85-270 VAC/DC (Optionally 20-50 VAC/DC) 5 6 7 8 OIL COOLED 9 10 11 12 13 14 15 16 Accept Reset F/O Reset Test Power MA-116 CONTROL ROOM Terminal details : Channel Inputs 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 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 31 32 F/O Reset Common Silence Accept Reset MA-116 (16 channels) Keys Input Aux Supply 85 . Isolated channels and push-buttons input.116 1 2 3 4 Models for 6. Any ISA standard sequence . Response time and flash rate are selectable. 8. Windows size : (1) for 6 & 8 windows : 50 x 20 mm. (2) for 12 & 16 windows : 25 x 20 mm.site selectable. Aux. NO/NC channel selection can be configured on site.270 VAC/DC Outputs Alarm Ring Back Test E 33 34 35 36 37 38 39 40 41 Channel Inputs 44 45 46 47 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 TECSYSTEM F/O Reset Silence Common MA-108 (8 channels) Accept Reset Keys Input Aux Supply 85 .270 VAC/DC Outputs Alarm Ring Back Test E 33 34 35 36 37 38 39 40 41 44 45 46 47 18 .270 VAC/DC Outputs Alarm Ring Back Test E 33 34 35 36 37 38 39 40 41 44 45 46 47 Channel Inputs 1 2 3 4 5 6 1 2 3 4 5 6 7 8 9 10 11 12 APPLICATION NOTE F/O Reset Silence Common Accept Reset MA-106 (6 channels) Keys Input Aux Supply 85 . Panel cut out : 136 x 136 mm. Enclosure : Noryl (Fire retardant material). 2 set points per channel ( Alarm & Trip ). K. R.Temperature / Process Scanner UT-101 / UT-102 family UT-101 Options : Parameters No of channels UT-101 16 UT-101/16 16 UT-101/SP 16 4-20 ma / 0-20 ma / 0-10 ma Open collector 32 192H x 96W x 335D mm 32 8 UT-102/08 8 UT-102/10 10 UT-102/12 12 Channel Inputs. One relay can be programmed to operate on sensor fault. Channels can be added or deleted from Scanning & display. S. Aux.5 inch displays. Outputs No of outputs Overall dimensions C/o contacts 8 C/o contacts 6 192H x 96W x 265D mm 4 19 APPLICATION NOTE TECSYSTEM Any one group 1) PT-100 & Cu-53 2) T/c. Relay grouping user settable as per requirement. Supply : 90 . Programming using front key pad. Hysterisis ( Dead band ) user settable. Channel Status and parameter displayed on eight 0. Channel hold facility. Time delay for relay operation user settable. Channel status are indicated using 3 mm LEDs. E 3) T/c. Sensor i/ps as per table shown below. Channel number.270 VAC/DC. T Pt-100 & Cu-53 DIMENSION CONTROL ROOM 8 / 10 / 12 / 16 channels are available. OIL COOLED Salient features : DRY / CAST RESIN . J. Side View APPLICATION NOTE Figure .DRY / CAST RESIN Dimension & Mounting Details for TR-7570. TR-7551. TR-7577-Rx.Panel cutout : 92 x 92 mm. . TR-7552 265 130 235 (+5/-0) X = X = OIL COOLED 50 Front Cover Fixing Screw (Open for making connections and settings) M6 Threads CONTROL ROOM FRONT VIEW SIDE VIEW MOUNTING DETAILS Note : . Figure . TR-7541-M. TR-8080 spt.All dimensions are in m. TR-7576.3 20 150 (+5/-0) 215 .2 DIMENSION Dimension & Mounting Details for TR-7543 & TR-7544 96 15 110 20 TECSYSTEM 96 92 Front View Notes : . TR-7577-Cx.m.All dimensions are in m.m. TR-8080-FO. All dimensions are in m.All dimensions are in m.Din rail mount TS-35 / TS-35D as per DIN 46277-3 Side View Figure . .All dimensions are in m.5 Dimension & Mounting Details for TPR-05 TECSYSTEM 70 73.6 21 APPLICATION NOTE DIMENSION CONTROL ROOM OIL COOLED 96 90 DRY / CAST RESIN .m. .4 Dimension & Mounting Details for SPT-04 100 65 125 Front view Terminals for external connections Notes : .m.m.5 114 Notes : . Side View Figure .Dimension & Mounting Details for RWTI-400MC & RWTI-500MC 96 10 125 Front View Note : .Panel cutout : 92 x 92 mm. .Din rail mount TS-35 / TS-35D as per DIN 46277-3 Figure . APPLICATION NOTE T154 22 .270 VAC/DC. Information about full range of their products can be found on www. Aux. Five relay outputs for Fault.DRY / CAST RESIN We are in techno-commercial collaboration with this leading European company. Four relay outputs for Fault. High (Alarm) & Very High (Trip). Temperature indication range : 0 to 240 °C. 4-20mA o/p for remote temperature indication / DAS / SCADA can be provided using “Module Conv 420-4”. CONTROL ROOM Fan-1 & Fan-2. Fan. NT935 DIMENSION Winding Temperature Scanner for Dry / Cast Resin type transformers T154 Salient features : TECSYSTEM Four channel temperature scanner. manufacturing temperature monitoring units and ventillation fans.it OIL COOLED Winding Temperature Scanner for Dry / Cast Resin type transformers NT935 Salient features : Four channel temperature scanner. RS-485 MODBUS RTU slave protocol for DAS / SCADA application can be provided using “BUSMOD-8/A”. Supply : 20 . Temperature indication range : 0 to 240 °C. High (Alarm) & Very High (Trip).tecsystem. Temperature indication range : Oil : – 40 to 150 °C Winding : – 40 to 200 °C.270 VAC/DC. 230 / 110 VAC 50 Hz 180 m3 / hour 38 W ( +/. Five relay outputs for OT / WT Alarm. Aux. 4-20mA output for remote temperature indication / DAS / SCADA application can be provided using “MULTIMOD 133”.Winding Temperature Indicator ( OTI & WTI ) for Oil cooled transformers OIL COOLED NT133 IT Salient features : Displays both Oil & Winding temperatures sequentially. Fault.C.57A@ 110 VAC(+/. Sensors For oil temperature .10%) : 40 Pa : 2010 rpm : : : : : : Max.5 W ) 0.T. Fan-1 & Fan-2. pressure Speed 23 APPLICATION NOTE TECSYSTEM TTG240 DIMENSION CONTROL ROOM DRY / CAST RESIN .10%) 0. IEC-60751 For winding simulation . Anticipatory Fan control function. OT / WT Trip.RTD Pt-100.35A @ 230 VAC(+/. NT133 IT Transformer Cooling Fan (Cross flow type) TTG240 Salient features & Specifications : Impeller dimension Power supply Frequency Max air flow Power Line current 60 x 240 mm. Supply : 20 . RS-485 MODBUS RTU slave protocol for DAS / SCADA application can be provided using “MULTIMOD 133”. Do not try to pull the S-02 out of it’s housing without clearing this top epoxy seal. Seal it at one end with epoxy. Therefore. To avoid loose S-02.DRY / CAST RESIN Application Note Suggestions for Installing S-02 on Dry / Cast Resin transformers S-02 is very reliable and has a long service life.and seal the tube as in earlier case. if S-02 is pre-installed then chances of damage to S-02 are very high. You need to place this tube along the coil length in inter layer gap at top end of the coil and fix it firmly with fibre glass / cotton tape. seal its one end with epoxy. The front portion ( about 2 . clear this top epoxy seal carefully and take out the defective S-02. fill this tube with dry MgO powder and seal the upper end of the tube. Put new S-02. APPLICATION NOTE 24 . It is therefore advisable to install S-02 after the assembly of transformer is complete. This portion is well protected by special high temperature sleeves and in normal course nothing should happen to this. Rest of the procedure is as described in suggestion given above. S-02 may fail in extremely rare circumstances. Providing a tube in the interlayer winding This is to be done at the time of winding the coils. During assembly of transformers. To replace this defective S-02. S-02 can gently be slide / pushed into this tube. This part is very delicate and critical and hence needs utmost care in handling. mica or epoxy tube. DIMENSION TECSYSTEM 2. Major problems user face in temperature monitoring systems are due to mishandling of S-02.3 cm ) of sensor S-02. Take about 8 to10 inches long and 5 to 6 mm ID. take due precautions in handling and installing S-02 and doing correct wiring. 1. pulling or pushing these wires will surely damage these connections and make S-02 unusable. This arrangement will give a very long operational life for the S-02. No heavy object should be put on S-02. it will last throughout the useful life of the transformer and give trouble-free service. Once the transformer is assembled. improper S-02 installations and improper wiring. tapping. This is a good and easy arrangement for housing the S-02. contains temperature sensing element and extension joints. When properly handled and installed. You need to tie this tube vertically/length wise on the outer surface of the winding coils by fiber glass or other appropriate tape. This arrangement also provides a facility to replace the S-02 in case of need in future. mica or epoxy tube. Tying the tube ( after assembly of winding coils ) Take a 8 to10 inches long 5 to 6 mm ID. However. OIL COOLED CONTROL ROOM Here are few suggestions for your reference. 4. explore the possibility of inserting S-02 in the cooling duct of low voltage coil. Avoid S-02 cable running parallel to power / high tension cables. This would avoid the chance of accidental flash-over with HV. Here. making coil longer. care should be taken so that S-02 is not left hanging.3 . there will be a necessity to provide some intermediate termination arrangement. The only disadvantage of this method is the amount of work involved. is to terminate them directly on WTS. In this case. at a suitable place. S-02 is to be placed in this hole and secured with some high temperature silicon adhesive. 25 OIL COOLED DRY / CAST RESIN . Tie S-02 lead wires properly and rigidly so that they are securely in place. It is advisable to mount S-02 on the LV output side of the transformer.Drill hole on the top of the winding coils Drill one hole of about 5 mm diameter and at least 25 mm depth on top side of the coil. They may therefore. Refer adjacent figure. After transformer assembly. after it is casted. temperature ratings of these terminals. This arrangement is more common because it is easy to implement. it may not be possible to terminate S-02 directly on WTS. in case S-02 is to be replaced for any reason. IMPORTANT PRECAUTIONS Never install S-02 in HV winding coils. care must be taken to select proper terminals. It might be convenient to provide one or two additional holes for installing spare S-02. This avoids problems arising out of loosening of intermediate terminations and wrong wiring. with following considerations terminals are suitable for S-02 leads. In some cases. Connections of S-02 leads to Winding Temperature Scanner ( WTS ). But in that case. S-02 cables should be grouped with other instrumentation cables. Ensure S-02 leads are provided with end ferrules of right size. Always keep the S-02 sensors in their respective packing till they are installed. The most appropriate & reliable way of terminating leads of S-02. this arrangement calls for extra height of insulation. The excess lead length should be accommodated in the marshalling box rather than in the transformer enclosure. All spares or extra sensors should be handled in packed condition only. Putting S-02 in cooling ducts of windings CONTROL ROOM APPLICATION NOTE TECSYSTEM DIMENSION Some of our customers may find the above suggestions difficult to implement. However. Never try to solder the free ends of the sensor leads. The vibration of the sensor should be arrested using some mechanism or using some bonding / adhesive materials of suitable temperature grade. installed in the winding of the transformer. This is the reason we call these temperature scanners as “Transformer Protection Relays”. Should be suitable for switchyard environmental conditions. Do I need to monitor all three windings of the transformer ? As dry type / cast resin transformers are usually installed at utilities where large unbalanced load is a normal condition. noise immunity. We therefore insist and suggest our customers to use appropriate equipment for specific need and application.T. is a device whose resistance changes with temperature. The operating conditions are more severe for equipments meant for transformer / switchyard application. a good temperature surveillance system is necessary. This image is formed digitally by our ( OTI&WTI ) models. surveillance system should provide the following features: Accurate temperature measurements (windings. Although the dry / cast resin transformers are safer than oil cooled ones from the point of fire hazards. oil etc etc). Therefore. TECSYSTEM APPLICATION NOTE 6. What features are essential for a Transformer protection relay (WTS. 3. reliability & long operational life of a transformer. Please note that the Thermal image gives the estimated winding temperature and is not actual. All PECON winding temperature scanners ( Transformer protection relays ) are designed to meet these basic requirements. OIL COOLED 2. A good temp. we manufacture products for both transformer as well as for control room application. Winding current / load current is measured using a C. What is a RTD? Resistance Temperature Detector or RTD for short. direct access to the windings for installing the temperature sensor is not possible. they can also cause disasters. DIMENSION 5. vibration handling. monitoring only one winding’s temperature is sufficient. At PECON. OTI&WTI) ? For the safety. core. Hence there is a need for specialized and reliable temperature surveillance system. However. It’s always better to monitor temperature of all the three windings. it is necessary to monitor all the three phase windings of the transformer. Capability of warning the user of excessive transformer temperature (alarm). The RTD sensor is installed on the transformer to measure “Top Oil” temperature. One of the most reliable methods to estimate winding temperature is by using “THERMAL IMAGE” formation technique. indirect means of estimating this temperature has to be done. Why do I need to monitor winding temperature of a transformer ? For economic reasons now-a-days the transformers are operated at “near limits” of temperature ratings. Signal for remote indication & data logging. Capable of switching off and isolating the transformer from line in case the transformer reaches a limiting temperature level (trip). by measuring top oil temperature & current flowing through the winding and doing calculations considering temperature gradient and time constant. What is a thermal image and how does it help to estimate the winding temperature ? Due to high voltages associated with the windings and due to insulation considerations. Cooling fan control. then there is a very high risk of failure of insulation leading to transformer failure and associated hazards and loss. if they exceed the rated temperature limits. Maximum temperature registering. And this image is displayed as Winding Temperature. Alarm. Temperature gradient ( dT ) and Thermal Time constant of windings are estimated by design consideration and set accordingly. The design for these scanners is more focused towards reliability. are much less severe. they are usually installed at places where the loads are normally balanced and so in that case. Most of them will have many additional features incorporated. Higher the temperature more the resistance. Normal temperature scanners are designed for control rooms where environmental conditions. trip and fan controls settable over operating range. Sensor Fault monitoring and indication. What is the difference between Winding Temperature Scanner (WTS) & Normal Temperature Scanner? WTS are built specially for transformer application & the features provided in this series of scanners are in line with the requirements of transformer industry. CONTROL ROOM 4. In case of large oil cooled power transformers. higher ambient temperatures etc. 26 . mounting ease. If suitable temperature monitoring system is not installed on the transformer. This change in resistance of these sensors allow us to measure the temperature.DRY / CAST RESIN FA Q s 1. 14. Studies have proven that this leads to longer life of the transformer. while it is very difficult to check the healthiness of thermistors. 13. RTDs offer higher temperature operating range. Deg.7. By enabling this function. 12. Thermistor are mostly used in consumer goods. These conditions are.0 111.7 40. Also.0 103.5 mm². 27 CONTROL ROOM OIL COOLED DRY / CAST RESIN . this distance in some installations can be as long as few hundred meters. C.8 30. Temperature indication is not available. White 0. measurement due to lead resistance of the sensor. Further. 8. much before it actually rises & operates the fan. 2. 9. this is necessary to minimize errors in temp.100) Temp. stability & linearity. inside the enclosure is likely to be more than the permissible maximum ambient temperature limit. both the RED leads should show near zero ohms of resistance.9 20. It is recommended to keep RTD leads as small as possible to keep lead resistance errors minimum. This feature turns on the cooling fan for short time at regular predetermined interval (settable & selectable by the user). What type of wire leads should I use for extending RTDs to WTS? DIMENSION APPLICATION NOTE TECSYSTEM Standard field cables (copper) of 1. try to avoid intermediate joints and terminations. Their industrial use are limited to. 250 meters of 1. They have very good accuracy. Sensor S-02 being a simple resistance. With thermistor based equipments. What is Anticipatory fan control function (related to OTI&WTI only) ? This function helps in better thermal management of a transformer in comparison to conventional WTI systems.0 10. Never mount WTS inside the transformer enclosure. irrespective of the temperature of the transformer. This keeps the fan in healthy & working condition. WTI can anticipate the winding temperature rising above the FAN operating set point.0 100.5 or 2. Red Red Table below shows the resistance values at different temperatures. RTDs come at reasonable cost and are easily available. They can be easily be tested for their healthiness. Is it safe to mount WTS directly on a transformer? WTS is designed for marshalling box application.5 mm² extension leads will cause less than 1 °C error.0 115. Do I have to extend all the three leads of RTD to WTS? Yes. as the temp.5 Resistance Ohms All S-02s coming to you from PECON are checked and calibrated to international standards and traceable to national standards.0 107. if the transformer is installed in a covered area. Make sure that the surrounding ambient conditions are within the specified limits. 1. 10. With three wire leads extension. 11. No power to the scanner (only for WTS supplied with Electrical Fail fault) Sensor RTD open or short circuited. WTS can be mounted on the transformer enclosure directly. What is Fan exerciser function ? Some of the WTS & ( OTI&WTI ) are provided with this feature. However. Only fixed temperature cut offs are possible and no settability can be given. will show about 110 to 115 Ohms corresponding to room temperature between White and Red lead.5 mm² wire would cause even lower errors. where no indication is required and where fixed temperature cut offs with no settability is acceptable. How to check RTD sensor S-02 ? S-02 can easily be checked with ordinary multimeter. What is fault relay and how do I use it ? Fault relay is provided to indicate abnormal or fault condition in WTS. However. Why RTD ? Why not thermistor ? The main reasons which make RTD based instruments a better choice for transformer winding temperature measurements are : RTDs are fully interchangeable. (as per plant standard) can be used for RTD lead connections. RTD (Pt . installed in the winding of the transformer. The operating conditions are more severe for equipments meant for transformer / switchyard application. All PECON winding temperature scanners ( Transformer protection relays ) are designed to meet these basic requirements. is a device whose resistance changes with temperature. This is the reason we call these temperature scanners as “Transformer Protection Relays”. Should be suitable for switchyard environmental conditions.DRY / CAST RESIN 1. indirect means of estimating this temperature has to be done. Do I need to monitor all three windings of the transformer ? As dry type / cast resin transformers are usually installed at utilities where large unbalanced load is a normal condition. noise immunity. In case of large oil cooled power transformers. by measuring top oil temperature & current flowing through the winding and doing calculations considering temperature gradient and time constant. then there is a very high risk of failure of insulation leading to transformer failure and associated hazards and loss. We therefore insist and suggest our customers to use appropriate equipment for specific need and application. What features are essential for a Transformer protection relay (WTS. they can also cause disasters. 28 . it is necessary to monitor all the three phase windings of the transformer. trip and fan controls settable over operating range. This image is formed digitally by our ( OTI&WTI ) models. OTI&WTI) ? For the safety. If suitable temperature monitoring system is not installed on the transformer. surveillance system should provide the following features: Accurate temperature measurements (windings. However. What is a thermal image and how does it help to estimate the winding temperature ? Due to high voltages associated with the windings and due to insulation considerations. monitoring only one winding’s temperature is sufficient. Although the dry / cast resin transformers are safer than oil cooled ones from the point of fire hazards. CONTROL ROOM 4. if they exceed the rated temperature limits. And this image is displayed as Winding Temperature. Therefore. Higher the temperature more the resistance. a good temperature surveillance system is necessary. core. direct access to the windings for installing the temperature sensor is not possible. What is the difference between Winding Temperature Scanner (WTS) & Normal Temperature Scanner? WTS are built specially for transformer application & the features provided in this series of scanners are in line with the requirements of transformer industry. Why do I need to monitor winding temperature of a transformer ? For economic reasons now-a-days the transformers are operated at “near limits” of temperature ratings. TECSYSTEM APPLICATION NOTE 6. OIL COOLED 2. mounting ease. reliability & long operational life of a transformer. higher ambient temperatures etc. Please note that the Thermal image gives the estimated winding temperature and is not actual. Hence there is a need for specialized and reliable temperature surveillance system. One of the most reliable methods to estimate winding temperature is by using “THERMAL IMAGE” formation technique. Winding current / load current is measured using a C. oil etc etc). Normal temperature scanners are designed for control rooms where environmental conditions. are much less severe. Sensor Fault monitoring and indication. 3. The RTD sensor is installed on the transformer to measure “Top Oil” temperature. Capability of warning the user of excessive transformer temperature (alarm). It’s always better to monitor temperature of all the three windings. What is a RTD? Resistance Temperature Detector or RTD for short. Maximum temperature registering. we manufacture products for both transformer as well as for control room application. DIMENSION 5. Alarm. The design for these scanners is more focused towards reliability. Cooling fan control.T. Signal for remote indication & data logging. At PECON. Temperature gradient ( dT ) and Thermal Time constant of windings are estimated by design consideration and set accordingly. they are usually installed at places where the loads are normally balanced and so in that case. Capable of switching off and isolating the transformer from line in case the transformer reaches a limiting temperature level (trip). vibration handling. Most of them will have many additional features incorporated. A good temp. This change in resistance of these sensors allow us to measure the temperature. . pecon-india. 145 / 2. Tel : +91 ( 79 ) 2281 3432. .I. G. Estate. specifications are subject to change.com Website : www. We pledge to monitor our performance as an on-going activity and strive for continual improvement. Ahmedabad . Naroda.com Due to continual development and change in technology.D.Quality Policy At Power Electronics & Control popularly known as PECON We are commited to provide technologically superior products & high quality services to achieve total customer satisfaction. integrity and excellence in all areas of business. Fax : +91 ( 79 ) 2282 1397 Cell : + 91 93 2828 1537 / 1538 Email : pecon@vsnl. We commit ourselves to the highest standards of quality.C. INDIA.382 330.