Description

GE Multilin F35 Feeder Management Relay

The GE Multilin F35, also cataloged as the F35 Feeder Management Relay, operates as a dedicated hardware component for distribution feeder protection, breaker control, and electrical fault detection within substation protection systems.

Hardware Specifications

Parameter	Specification
Model	F35
Brand	GE Multilin
Operating Temp	-40 deg C to +60 deg C
Feeder Capacity	Up to 6 feeders without bus voltage measurement; up to 5 feeders with busbar voltage measurement
Protection Functions	ANSI 50, 51, 27, 59, 81, 50BF, 79, TGDF/Wattmetric

Firmware Flash Compatibility and Network Execution

The GE Multilin F35 supports configurable protection logic execution through internal firmware functions. Firmware flash compatibility allows controlled feature updates and protection setting management within the relay platform. The device processes feeder protection algorithms including overcurrent, voltage, frequency, breaker failure, and autoreclosing functions for connected electrical circuits.

Frequently Asked Questions (FAQ)

Q: What protection elements are integrated into the F35 relay?
A: The F35 integrates instantaneous and time overcurrent protection, voltage protection, frequency protection, breaker failure detection, autoreclosing, and directional ground fault protection functions.

Q: How many feeders can the F35 manage in a protection configuration?
A: The F35 can be configured for up to 6 feeder protection applications without bus voltage measurement or up to 5 feeders when busbar voltage measurement is included.

Q: Does the F35 support automatic breaker control functions?
A: The F35 includes a 4-shot autoreclosing function supporting up to 6 breakers and individual breaker failure detection for connected feeders.

Field Installation Guidelines

Install the F35 relay in a suitable protection panel or relay cabinet with appropriate mechanical support and environmental control.

Verify CT and VT wiring polarity before commissioning protection functions. Maintain separation between low-level communication wiring and high-energy power conductors to reduce electrical interference.

Use shielded signal wiring where required by the installation design. Connect cable shields according to site grounding practices and avoid multiple unintended grounding points.

Confirm auxiliary power wiring, terminal assignments, and protective grounding connections before applying operating voltage. Verify firmware compatibility and protection settings before placing the relay into service.

Specifications

• Brand: General Electric

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems