GE Multilin 750-P5-G1-S1-HI-A20-R Feeder Protection System Digital Relay

The 750 Feeder Protection System is a digital relay intended for the management and primary protection and control of distribution feeders. This easy to use relay provides comprehensive protection functions for feeders and back up protection for bus, transformers and transmission lines in a draw out construction and at a reduced product life cycle cost. 

Technical specification:

• PHASE/NEUTRAL/GROUND/NEGATIVE SEQUENCE TIME OVERCURRENT PROTECTION:

  • Pickup level: 0.05 to 20.00 (in steps of 0.01 x CT)
  • Dropout level: 97 to 98% of Pickup
  • Curve multiplier: 0.00 to 100.00 (in steps of 0.01)
  • Timing accuracy: ±3% of trip time or ±40 ms (whichever is greater)

• SENSITIVE GROUND TIME OVERCURRENT PROTECTION:

  • Pickup level: 0.005 to 1.000 (in steps of 0.001 x CT)
  • Dropout level: 97 to 98% of pickup
  • Curve multiplier: 0.00 to 100.00 (in steps of 0.01)
  • Timing accuracy: ±3% of trip time or ±40 ms (whichever is greater)

• PHASE/NEUTRAL/GROUND/NEGATIVE SEQUENCE INSTANTANEOUS OVERCURRENT PROTECTION:

  • Pickup level: 0.05 to 20.00 (in steps of 0.01 x CT)
  • Dropout level: 97 to 98% of pickup
  • Time delay: 0.00 to 600.00 (in steps of 0.01s)

• PHASE DIRECTIONAL:

  • Angle Accuracy: ±2°
  • Operation Delay: 25 to 40 ms