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Numerical OC AND REF Protection Relay

Backup Transformer Protection

GKBUR series are dedicated Overcurrent and Restricted Earth Fault (OC and REF) protection numerical relays perfectly aligned for backup protection of both HV side and LV side of the transformer. In case of a Mechanical faults, it generate alarms to schedule the preventive maintenance.

GK Power, RDSO approved leading manufacturer in India offers a Numerical Feeder protection relay at industry’s latest Technologies. Enhanced safety by reducing hazards with safety-conscious testing of IEC 60255-1, IEC 60255-26 and IEC 60255-27, This relays unleash its own full potential of working in hard environments with Ingress protection of IP54.

Application

Backup protection to High Voltage and Low voltage of 25 kV and 2X25 kV Transformers for Indian Railways with respect to the below specification

TI/SPC/PSI/PROTCT/6072
TI/SPC/PSI/PROTCT/7101

Protection Function

Five Stages Over Current Proetction
Restrictive Earth Fault Protection
Breaker Fail Protection
Trip Circuit Supervision
Mechanical Faults Alarm
Post Overload

Product benefits

Our relays available with selectable communication Protocols such as IEC 61850 and IEC 60870-5-103 for SCADA communication through RS485 and RJ45 ports available at the rear side.
50 cycles of actual waveform are stored in the built-in memory with date time stamping for analysing fault.
Self Diagnostic feature for the continuous monitoring of the internal hardware and alarm generation in case of failure of any critical components.
Ready to install at 25 kV Traction Transformer, 2×25 kV Scott connected and V connected Transformer & Feeder Panels at TSS

Product features

Withdraw-able type Flushmounted
20 x 4 LCD Alpha Numeric Display with back light Control and 10 Status Indication LEDs.
5 Keys for Settings and navigation, Individual key for Read/Record, LED Reset and Hardware Reset

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