GE Multilin 750-P5-G5-D5-HI-A20-R Advanced Distribution Feeder Management Relay

Description

Technical Specifications

• Manufacturer: GE Multilin (General Electric)
• Model Number: 750-P5-G5-D5-HI-A20-R
• Series: 750/760 Feeder Management Relay
• Control Power: 88–300 VDC, 70–265 VAC (48–62 Hz); 25 VA nominal, 35 VA max
• Frequency Range: 25–60 Hz nominal
• Current Inputs: 5 A phase/zero-sequence; 5 A polarizing current input
• Voltage Inputs: Up to 4 VT channels
• Analog Inputs: 8 configurable channels (4–20 mA)
• Analog Outputs: 8 × 4–20 mA (2 fixed for breaker control, 1 fixed alarm, 5 user-configurable)
• Digital Inputs: 12 optically isolated, programmable inputs
• Digital Outputs: 8 form-A/C relay outputs
• Communication: RS485, Ethernet; supports Modbus RTU, DNP3, IEC 61850 (optional)
• Display: Backlit LCD with keypad; programmable LED status indicators
• Operating Temperature: -40°C to +60°C (-40°F to +140°F)
• Storage Temperature: -40°C to +80°C (-40°F to +176°F)
• Humidity: 5%–95%, non-condensing
• Insulation Voltage: 300 V; Overvoltage Category II
• Dimensions: 178 mm × 165 mm × 216 mm (7” × 6.5” × 8.5”)
• Weight: Approx. 7.9 kg (17.4 lbs)

Key Features

1. Comprehensive Feeder Protection
   • Overcurrent (50/51), ground fault (50N/51N), phase unbalance, reverse power (32)
   • Overvoltage (59), undervoltage (27), underfrequency (81U), overfrequency (81O)
   • Breaker failure (50BF), thermal overload (49), and voltage-restrained overcurrent
   • Adaptive protection logic that adjusts settings dynamically with grid conditions
2. Precision Metering & Monitoring
   • Real-time measurement of 3-phase voltage, current, power (kW/kVAR/kVA), energy, and power factor
   • 32 samples/cycle high-speed sampling for accurate waveform capture
   • 4 setpoint groups for flexible configuration across operating scenarios
3. Advanced Diagnostics & Analysis
   • Waveform Capture: Records 4 currents, 3 voltages, 14 logic inputs, and 8 outputs during faults
   • Event Logging: Stores 512 time-stamped events (alarms, trips, self-tests)
   • Oscillography: Captures fault waveforms for post-event analysis and root-cause identification
   • Breaker Maintenance Monitoring: Tracks operations, contact wear, and trip times for predictive maintenance
4. Flexible Communication & Integration
   • Multi-protocol support enables seamless connection to SCADA, PLCs, and DCS systems
   • GE EnerVista software compatibility for remote configuration, monitoring, and data logging
   • Time synchronization via IRIG-B for coordinated system-wide event timing
5. Robust & User-Friendly Design
   • Wide-range control power for global deployment across diverse voltage systems
   • Drawout construction for easy installation, removal, and maintenance without system shutdown
   • Conformal coating option available for corrosive or humid environments
   • Intuitive local HMI with LCD/keypad for on-site parameter adjustment and fault diagnosis

Application Scenarios

• Utility Distribution Substations: Protects and monitors medium-voltage feeders in urban, rural, and industrial distribution networks
• Industrial Power Systems: Deployed in manufacturing plants, refineries, and processing facilities for feeder protection and control
• Oil & Gas: Used in upstream (drilling), midstream (pipelines), and downstream (refineries) electrical distribution systems
• Water & Wastewater: Protects feeders for pumps, motors, and treatment equipment in municipal and industrial plants
• Mining: Safeguards underground and surface distribution feeders for crushers, conveyors, and hoists
• Renewable Energy: Applied in solar and wind farm collector feeders for grid interconnection and fault protection

Additional Information

• Condition: Brand new, original factory packaging
• Warranty: 12-month manufacturer warranty
• Country of Origin: United States
• Lead Time: 6–8 weeks (in-stock units available)
• Software: Compatible with GE EnerVista 750/760 Setup Software