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GE Multilin F35N03HAHG8GH6TM8HP6TU5FW6D Feeder Management Relay

The GE Multilin F35N03HAHG8GH6TM8HP6TU5FW6D, also cataloged as the F35 Feeder Management Relay, operates as a dedicated hardware component for feeder protection, control, and monitoring within GE Multilin Universal Relay (UR) platforms.

Hardware Specifications

Parameter	Specification
Model	F35N03HAHG8GH6TM8HP6TU5FW6D
Brand	GE Multilin
Dimensions	Standard 19-inch rack-mount chassis, horizontal orientation
Operating Temp	-40 deg C to +60 deg C
Power Consumption	Not specified in supplied documentation
Product Type	Feeder Management Relay
Platform	GE Multilin Universal Relay (UR) Series
Power Supply	88-300 VDC / 88-264 VAC
Current Inputs	4 CT inputs, 1 A / 5 A rated
Voltage Inputs	4 VT inputs
Digital I/O	High-density contact inputs and Form-A/Form-C relay outputs
Communication	Redundant Ethernet with IEC 61850 support
Protection Functions	50/51, 50N/51N, 50G/51G, 50BF, 67, 67N, 67G, 27, 59, 59N, 81U/81O, 81R
Recording Functions	Oscillography, Sequence of Events recorder with 1 ms timestamping, fault locator
Metering	RMS current, voltage, kW, kVAR, kVA, power factor, frequency, energy measurement
Power Quality	Harmonic analysis up to 25th harmonic, THD measurement

GE Multilin Universal Relay Modular Architecture

The F35N03HAHG8GH6TM8HP6TU5FW6D uses the GE Multilin UR modular hardware architecture with configurable protection, communication, and I/O assemblies. The configuration includes high-density digital I/O, redundant Ethernet communication, CT/VT acquisition modules, and auxiliary transducer interfaces.

The UR platform supports deterministic protection processing through dedicated firmware functions and configurable logic elements. Firmware revision FW6D defines the supported protocol configuration, including IEC 61850, DNP3, and Modbus TCP/RTU communication capabilities.

Frequently Asked Questions

Q: Does the F35 support hot-swappable module replacement?
A: The supplied documentation does not specify hot-swap capability. Module replacement should follow GE Multilin UR maintenance procedures with the relay isolated from external power and field wiring.

Q: What communication protocols are supported by this configuration?
A: The specified FW6D configuration supports communication options including IEC 61850, DNP3, and Modbus TCP/RTU according to the configured firmware and communication hardware.

Q: What input signals are processed by the relay?
A: The relay processes transformer-derived current and voltage signals through the integrated 4 CT / 4 VT module and supports protection, metering, and monitoring functions based on sampled electrical measurements.

Field Installation Guidelines

Install the relay in a suitable 19-inch rack or panel enclosure according to the GE Multilin UR mechanical installation requirements.

Terminate CT and VT circuits using dedicated protective wiring practices. Maintain separation between instrument transformer wiring, communication cables, and high-voltage conductors to reduce electrical interference.

Connect communication ports using appropriate shielded cabling and apply grounding practices according to substation protection standards. Verify Ethernet network configuration, fiber or copper interface compatibility, and IEC 61850 network settings before commissioning.

Before energizing the relay, verify power supply polarity, auxiliary voltage range, terminal connections, digital input polarity, and output contact wiring. Confirm firmware compatibility with the configured protection logic and communication functions.

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