mvtp__r6023i_

Type MVTPBusbar Supervision Relay relay are normally connected across relay. whose primary winding is and earth fault busbar protection schemes the three phase relay may 2 .three phase required. output relay are hand reset contacts ALSTOM type MCAG 34 and for alarm purposes. continuously rated at 600V rms and relay. adjusted by monitored and when it exceeds the types: means of a dual in line (DIL) switch level pre-set by means of the DIL on the relay front panel. Application MVTP relays have a setting range of The ac voltage input is continuously The MVTP relay is available in two 1-16V in 1V steps.single phase actuated after a three second delay. In phase flag. value resistor. the buswires of the busbar The relays have a ventilated protection thus short-circuiting the The MVTP provides continuous enclosure fitted to the rear of each busbar protection relay and supervision of the buswires in high case to provide extra thermal rendering the protection of the zone impedance type busbar protection dissipation for the auxiliary supply concerned inoperative. On the same schemes such as those utilising components. Operation of the relay is indicated Isolation from the main CTs is circuited by a hand resettable mechanical achieved by an internal transformer main current transformers. current to voltage converter.Type MVTP Busbar Supervision Relay Figure 1: Type MVTP relay withdrawn from case Features be used. Operation circuited buswires as well as open. or alternatively three connected in series with a high single-phase units may be preferred. then l Alarm contacts provided rectified for comparison with a pre- Description set value. It detects open. MFAC 34 relays. l Integral buswire shorting facility In earth-fault only busbar protection The secondary output signal of this l Low ac burden schemes. Relays are switch setting. the single-phase relay is isolating transformer is fed into a l No external resistors required employed. the output relay is l Type MVTP 11 . The hand reset contacts of the output no external components are l Type MVTP 31 . 3 90 4.0 35 4.0 Auxiliary supply – typical burdens at the upper rated voltage Vx rated voltage Output relay Output relay not energised energised (V dc) mA W mA W 30/34 24 0. 3 CT connections are typical only. 4.82 90 3. 6.0 35 8.5 48/54 37. 8.86 110/125 24 3.2x10-3 4. type MVTP 31. 2. 3 .2 30/34 24 -37.06 48/54 24 1.75 Settings Setting range (VS) 1-16V rms adjusted by means of a DIL switch in 1V equal steps.5 220/250 175 -275 * Use a 30/34V relay with a separate MSTZ 02 dc/dc converter.7x10-3 2. All relays are rated continuously at the maximum voltage in the operative range. 10. 14V Auxiliary supplies (VX) Rating (V dc) Operative range (V dc) 24/27* 19. 12. A P1 S1 P1 S1 C B Phase rotation See note 3 S2 S2 P2 P2 a 1 b Power + c supply 3 Vx circuits – n 23 RL1-1 1 VA 24 3 Alarm RL1-2 2 25 contacts 87 87 87 A B C 4 v v v VB 26 Output RL1 RL1-3 5 Case earth t 27 >Vs circuits 6 RL1-4 1 2 VC 28 7 3 4 5 6 RL1-5 6 7 8 13 +ve 9 10 See note 3 Power 8 14 11 12 –ve supply RL1-6 9 13 14 22 circuits 15 16 11 17 18 19 20 Case earth connection 21 22 23 24 25 26 27 28 Notes 1 (a) CT shorting links make 2 Earthing connections as shown are typical only Module terminal before (b) & (c) disconnect.5-60 110/125 87.5-137. block viewed (b) Short terminals break before (c) from rear (c) Long terminals Figure 2: Typical application diagram: static modular buswires voltage supervision relay.01x10 -3 0. with 5 make contacts Technical Data Burdens Measuring circuit – typical burdens Applied voltage Vac 2 8 14 600 Burden VA 0.2-30.37 220/250 24 6. 000 operations minimum Thermal rating 600V rms per phase on all three phases simultaneously (at any setting).Frequency 50 and 60 Hz Operative range 47-61 Hz Operating time Fixed at 3 seconds Contact disengaging time <150ms Drop off/pick up ratio >85% after 3 second delay >98% before 3 second delay Accuracy Setting ±5% under reference conditions. 2kV rms for 1 minute between all terminals of independent circuits. 4 . High voltage withstand Dielectric withstand 2kV rms for 1 minute between all IEC 60255-5: 1977 terminals and case earth. Variation with frequency ±2% over operative range Variation with temperature ±1%/5ºC change Variation with auxiliary supply Nil Timer ±5% under reference conditions. 1kV rms for 1 minute across normally open contacts. with terminals on each independent circuit connected together.5 seconds.000 operations minimum Unloaded contact 100. Durability Loaded contact 10. 2 break Contact ratings Make and carry Make and carry Break continuously for 3 seconds AC 1250VA with maxima 7500VA with maxima 1250VA with maxima of 5 amps and of 30 amps and of 5 amps and 600V 600V 600V DC 1250 watts with 7500 watts with 100 watts (resistive) maxima of 5 amps maxima of 30 amps 50 watts (inductive) and 600V and 600V and maxima of 5 amps and 600V The hand-reset contacts will carry 150A rms for 0. Variation with frequency ±2% over operative range Variation with temperature ±1%/5ºC change Variation with auxiliary supply Nil Contacts Hand reset Contact combinations 5 make 4 make. 1 break 3 make. 0kV peak across terminals of the same circuit (except metallic contacts). and between all terminals connected together and case earth. EN 50081-2 : 1994 Generic standards were used to EN 50082-2 : 1995 establish conformity. 1.5J between all terminals of the same circuit (except output contacts). EN 61010-1 : 1993/A2 : 1995 Compliance is demonstrated by EN EN 60950 : 1992/A11 : 1997 reference to generic safety standards.5kV peak between independent IEC 60255-22-1 : 1988 Class III circuits and between independent circuits and case earth. Repetition rate: 400 per second. Product safety 73/23/EEC Compliance with the European Commission Low Voltage Directive. Electrical environment High frequency disturbance 2.High voltage impulse Three positive and three negative IEC 60255-5 : 1977 impulses of 5kV peak. 1. between independent circuits.2/50µs. Atmospheric environment Temperature IEC 60255-6 : 1988 Storage and transit –25°C to +70°C Operating –25°C to + 55°C IEC 60068-2-1 : 1990 Cold IEC 60068-2-2 : 1974 Dry heat Humidity IEC 60068-2-3 : 1969 56 days at 93% RH and 40°C Enclosure protection IEC 60529 : 1989 IP50 (dust protected) Mechanical environment Vibration IEC 60255-21-1: 1988 Response class 1 5 . EMC Compliance Compliance with the European 89/336/EEC Commission Directive on EMC is claimed via the Technical Construction File route. 0. 1mhz burst decaying to 50% peak value after 3 to 6 cycles. Case outline size 4 6 . MSTZO2 R6006 177 157 max. Reset 103 Flush mounting 11 All dimensions in mm Figure 3: MVTP 11. 168 159 Additional Information Service Manual R8023 MCAG R6035 Push button projection 10 max. Information Required with Order MVTP 1 C B Relay type: Single phase relay 1 1 D Three phase relay 3 1 F Auxiliary voltage: 30/34V 0 2 5 48/54V 0 5 0 110/125V 0 7 5 220/250V 1 0 0 Contacts – hand reset: 5 make 1 4 make 1 break 2 3 make 2 break 3 Cases 52 Types MVTP 11 and MVTP 31 are 4 holes Ø4.4 97 23.5 supplied in size 4 and size 6 cases respectively. as shown in Figures 3 and 4. 99 MFAC R6007 Panel cut-out: Flush mounting fixing details High impedance busbar protection application notes R6142 32 212 25 min. 177 157 max. 103. Reset 155 Flush mounting 11 All dimensions in mm Figure 4: MVTP 31. Case outline size 6 7 . 151 Panel cut-out: Flush mounting fixing details 32 212 25 min.6 149 4 holes 4.4 24 168 159 Push button projection 10 max. com ©1998 ALSTOM T&D Protection & Control Ltd Our policy is one of continuous development.co. Accordingly the design of our products may change at any time.alstom. . Stafford. Its contents do not constitute an offer for sale or advice on the application of any product referred to in it. Publication R-6023I 129830 GSP Printed in England. ALSTOM T&D Protection & Control Ltd cannot be held responsible for any reliance on any decisions taken on its contents without specific advice. Whilst every effort is made to produce up to date literature. this brochure should only be regarded as a guide and is intended for information purposes only.alstom. ALSTOM T&D Protection & Control Ltd St Leonards Works.uk Internet: www. ST17 4LX England Tel: 44 (0) 1785 223251 Fax: 44 (0) 1785 212232 Email: enquiries@pcs.