KVTR-GEC Alsthom.pdf
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Technical Data Ratings Inputs: Auxiliary voltage (V x ) 24/125V or 48/250V ac or dc Frequency 50/60Hz Output: Field voltage 48V dc (current limit: 60mA) Burdens AC auxiliary voltage 6VA DC auxiliary voltage 4W Opto-isolated inputs Eight - energised from 48V field voltage Contacts Output relays Eight single make Contact ratings Output relays Make: 30A and carry for 0.2s Carry: 5A continuous Break: 50W resistive 25W inductive (L/R = 0.04s at 300V max) Communication port (K-Bus) Transmission Synchronous (RS485 voltage levels) Format HDLC Baud rate 64kbit/s Cable details 1000m screened, twisted pair Cable loading 32 units (multidrop system) KVTR Auto-Reclose Relays KVTR relays are available for single or multi-shot, three-pole auto-reclosing of a circuit breaker on distribution or transmission systems. Standard schemes incorporate maintenance lockout with pre-lockout alarm and user-selectable interlocks for an external synchronism check/dead bus charge/dead line charge relay and a ‘spring charged’ or equivalent contact on the circuit breaker. User selectable software logic functions allow the schemes to be configured to meet the requirements of most distribution and transmission systems. A feature of KVTR relays is that the operating logic is designed as a ladder diagram, enabling the provision in some cases, of a dedicated application program to suit customers' specific requirements.
description
KVTR - GEC Alsthom relay
Transcript of KVTR-GEC Alsthom.pdf
KVTRAuto-Reclose Relays
KVTR relays are available for single ormulti-shot, three-pole auto-reclosing ofa circuit breaker on distribution ortransmission systems.
Standard schemes incorporatemaintenance lockout with pre-lockoutalarm and user-selectable interlocksfor an external synchronismcheck/dead bus charge/dead linecharge relay and a ‘spring charged’or equivalent contact on the circuitbreaker.
User selectable software logicfunctions allow the schemes to beconfigured to meet the requirements ofmost distribution and transmission
Technical Data
RatingsInputs:Auxiliary voltage (Vx) 24/125V or 48/250V ac or dcFrequency 50/60Hz
Output:Field voltage 48V dc (current limit: 60mA)
BurdensAC auxiliary voltage 6VADC auxiliary voltage 4W
Opto-isolated inputsEight - energised from 48V field voltage
ContactsOutput relays Eight single make
Contact ratingsOutput relays Make: 30A and carry for 0.2s
Carry: 5A continuousBreak: 50W resistive
25W inductive(L/R = 0.04s at 300V max)
Communication port (K-Bus)Transmission Synchronous (RS485 voltage levels)Format HDLCBaud rate 64kbit/sCable details 1000m screened, twisted pairCable loading 32 units (multidrop system)
systems.
A feature of KVTR relays is that theoperating logic is designed as aladder diagram, enabling theprovision in some cases, of adedicated application program to suitcustomers' specific requirements.
GEC
Tel:
Our policy is one of continuous pro
Publication R6505B
Voltage withstandInsulation 2kVrms for one minute between all IEC 255-5 terminals and case earth.
2kV for one minute betweenterminals of independent circuitsincluding contact circuits.1.5kV across open contacts of outputrelays.1kV for one minute across opencontacts of the watchdog relay.
High voltage impulse 5kV peak, 1.2/50µs, 0.5J between IEC 255-5 all terminals and all terminals to case
earth.
High frequency disturbance 2.5kV peak between independent IEC 255-22-1/2 circuits and case.
Environmental withstandTemperatureIEC 68-2-1 Storage and transit: _25° to +70°CIEC 68-2-2 Operating: _25° to +55°C
Humidity IEC 68-2-3 56 days at 93% rh and 40°C
Enclosure protection IEC 529 IP50 (dust protected)
Vibration IEC 255-21-1 0.5g between 60Hz and 600Hz0.07mm peak to peak between 10Hz and 60Hz.
Mechanical durability 10,000 operations minimum.
CasesKVTR relays Midos Size 4
ALSTHOM T&D PROTECTION & CONTROL LIMITEDSt Leonards Works, Stafford ST17 4LX, England
01785 223251 Telex: 36240 Fax: 01785 212232
duct development and the right is reserved to supply equipment which may vary from that described.© 1995 GEC ALSTHOM T&D Protection & Control Limited.
079510 ICA Printed in England.
