GE SR750-P5-G5-S5-HI-A20-R-T Feeder Management Relay

• Sensitive Ground Current Input: 5 A
• Power Supply Voltage: HI (88-300 VDC, 70-265 VAC @ 48-62 Hz)
• Analog Output: A20 (eight 4-20 mA outputs)
• Breaker Status Indicator LED: R (red indicates breaker closed)
• Display: T (enhanced display with Ethernet interface)
• Communication Interfaces: Ethernet, RS-485, Modbus TCP/IP, IEC 60870-5-103/104
• Digital Input/Output: Configurable
• Metering Functions: Voltage, current, power, energy, frequency, power factor, demand
• Fault Recording: Equipped with fault recording capabilities

Functional Characteristics

• Comprehensive Protection Functions:
  • Provides a wide range of protection elements to handle various feeder fault types, including overcurrent (phase, ground, negative sequence, directional), over/under voltage, over/under frequency, breaker failure, auto-reclosing, inrush blocking, and arc flash protection (may require additional modules).
• Integrated Management Functions:
  • Beyond protection, the relay offers control, monitoring, and metering functions for complete feeder management.
• Enhanced Display (T):
  • Features a clear and informative display for local operation and status viewing, with an integrated Ethernet interface for easy data access.
• Flexible Communication Capabilities:
  • Supports multiple industrial standard communication protocols, facilitating seamless integration into SCADA and automation systems.
• High Reliability:
  • Renowned for its high reliability and stable operation in harsh industrial environments.
• Modular Design:
  • Facilitates easy installation, maintenance, and replacement of components.
• Powerful Metering Functions:
  • Provides accurate voltage, current, power, and energy metering for effective energy management and cost control.
• Fault Analysis Capabilities:
  • Equipped with event recording and fault recording functions for efficient fault diagnosis and system analysis.
• Configurable I/O:
  • Allows users to configure digital and analog inputs/outputs according to specific application requirements.
• Red Breaker Closed LED (R):
  • Offers intuitive breaker status indication.
• Multiple Current Input Configurations (P5-G5-S5):
  • Adapts to different grounding systems and sensitivity needs with 5 A phase current, 5 A ground current, and 5 A sensitive ground current inputs.
• Wide Range Power Supply (HI):
  • Operates under various power supply voltage conditions.
• Multiple Analog Outputs (A20):
  • Provides eight 4-20 mA analog outputs for remote transmission of measured values or other process variables.

Application Scenarios

The GE SR750-P5-G5-S5-HI-A20-R-T feeder management relay is widely used in the following areas:

• Power Distribution Systems:
  • Serves as the primary protection and management unit for medium and high voltage distribution feeders.
• Industrial Power Systems:
  • Protects and manages power feeders in factories, mines, petrochemical plants, and other industrial sectors.
• Commercial Buildings:
  • Utilized for power feeder protection and management in large commercial complexes.
• Renewable Energy:
  • Applied in distributed generation (such as photovoltaic and wind power) grid-connected feeder protection.
• Substation Automation:
  • Functions as a feeder bay control and protection unit, integrating into substation automation systems.