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GE SR750-P5-G1-S1-HI-A20-R Feeder Protection Relay

SR750-P5-G5-S5-HI-A20-R

Core protection function
Overcurrent protection (50/51): quick break, short delay, inverse time limit (IEC/ANSI curve)
Grounding/Zero Sequence (50N/51N): Sensitive Grounding, High Resistance Grounding Fault Detection
Directional overcurrent (67): Fault direction discrimination, ring network/contact line protection
Voltage Protection (27/59): Undervoltage, Overvoltage, Loss of Voltage, Voltage Imbalance
Frequency protection (81): low frequency, high frequency, frequency attenuation
Circuit breaker failure (50BF): Accelerate fault removal after tripping failure
Arc protection:<1 cycle rapid action, reducing the hazard of arc flash
Thermal overload (49): Thermal model protection to prevent equipment from overheating

Communication and Monitoring
Interface: Front RS-232, Rear Dual RS-485, Optional Ethernet
Protocol: Modbus RTU/TCP, DNP3.0, IEC 61850 (optional)
Display: 20 key LCD, real-time data, fault recording, event recording
Advanced features: waveform capture (4 currents+3 voltages), event logging, fault location, synchronous phasor measurement GE Vernova

Application
Medium voltage distribution network: 6-35kV feeder, capacitor bank, reactor protection
Industrial Substation: Protection of Plant Electricity for Metallurgy, Chemical, Oil and Gas, and Water Treatment
Transformer backup: as a backup protection for the 760 series main protection
Busbar protection: rapid removal of medium voltage busbar faults
Smart Grid: Supports IEC 61850 and adapts to digital substations

GE SR750-P5-G1-S1-HI-A20-R Feeder Protection Relay

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