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GE 750-P5-G5-S5-HI-A20-G-E

Product Name: Multilin 750 Feeder Protection Relay (SR750 Feeder Management Relay)
Product Overview: A digital feeder comprehensive protection device from GE Multilin’s 750/760 series. It provides complete feeder management, protection, and multi-parameter monitoring for medium- and low-voltage power distribution systems.
Model Code Breakdown:
  • P5: Three-phase current input 5 A
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Detailed content

  • G5: Ground (zero-sequence) current input 5 A
  • S5: Sensitive ground current input 5 A (high-sensitivity ground fault detection)
  • HI: Control power 70–265 VAC / 88–300 VDC (wide voltage)
  • A20: 8 channels 4–20 mA analog output
  • G: Green breaker closed status LED indication
  • E: Enhanced large-screen LCD + improved keyboard
Core Protection Functions:
  • Overcurrent, instantaneous trip (quick-break), ground fault, sensitive ground fault
  • Overload, unbalance, undervoltage/overvoltage, out-of-step, reverse power, directional overcurrent
  • Supports solid grounding, high-impedance grounding, and resonant grounding systems
  • Fault tracing: event recording, SOE, fault recording (64 cycles, 128 samples/cycle)
  • 4 independent setting groups for switching between multiple operating conditions
Key Technical Parameters:
  • Control Power: 70–265 VAC / 88–300 VDC, 48–62 Hz, power consumption 25 VA nominal / 35 VA max
  • Current Input: Three-phase 5 A, ground 5 A, sensitive ground 5 A, input impedance 375 Ω ±10%
  • Analog Output: 8 × 4–20 mA, accuracy ±0.2%
  • Isolation Voltage: 2.5 kV between input/output/power supply
  • Operation Time: Quick-break < 20 ms
  • Communication: Modbus, DNP3, IEC 61850, Ethernet, RS485
  • Digital I/O: 14 logic inputs / 8 SPDT relay outputs
  • Dimensions: 18 cm (W) × 16.5 cm (L) × 21.5 cm (H)
  • Weight: Approx. 6.5–8 kg
  • Enclosure: IP54 protection panel / IP20 whole machine
  • Operating Temperature: –40°C to +70°C
  • Storage Temperature: –40°C to +85°C
  • Relative Humidity: 5%–95% RH (non-condensing)
  • Certifications: CE, UL, CSA
  • Configuration Software: EnerVista 750/760
Application Scenarios:
  • Medium- and low-voltage power distribution: feeder primary/backup protection, multi-circuit centralized monitoring
  • Mining, metallurgy, petrochemical, water treatment complex power distribution systems
Installation & Usage Notes:
  • Panel mount or DIN rail installation
  • Configure 4 independent setting groups per application requirements
  • Use EnerVista software for configuration and waveform viewing via enhanced LCD

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