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GE Multilin F35-E00-VF-HF-8F-H6T-M6T-PXX Universal Relay

The GE Multilin F35-E00-VF-HF-8F-H6T-M6T-PXX, also cataloged as the F35 Universal Relay, operates as a dedicated hardware component for feeder protection, control, and metering within GE Multilin Universal Relay (UR) platforms. The relay executes electrical measurement, protection logic, digital I/O processing, and communication functions for multiple feeder applications.

Hardware Specifications

Parameter	Specification
Model	F35-E00-VF-HF-8F-H6T-M6T-PXX
Brand	GE Multilin
Operating Temp	-40 deg C to +60 deg C
Power Consumption	15-30 W typical, 45 W maximum
Power Supply	110-250 VDC / 110-230 VAC
Protection Type	Multiple Feeder Protection Relay
Current Inputs	1 A / 5 A dual-rated CT inputs
Voltage Inputs	60-300 V AC phase-to-neutral VT inputs
Digital Outputs	Form-A trip-rated contact outputs
Digital Input Range	24-250 VDC configurable
Ethernet Communication	10/100Base-T, 100Base-FX fiber options
Serial Communication	RS485 Modbus RTU / DNP 3.0
Ethernet Protocols	IEC 61850 Ed. 1/Ed. 2, Modbus TCP/IP, DNP 3.0 over TCP/IP, SNTP
Enclosure Rating	IP40 front panel, IP20 terminal block

Profinet / EtherNet Deterministic Network and Firmware Compatibility

The GE Multilin F35 uses the Universal Relay platform communication architecture for deterministic substation data exchange. The CPU and communication module support Ethernet-based protocols including IEC 61850 and Modbus TCP/IP for protection event reporting, control commands, and monitoring data transfer. Firmware flash compatibility is managed through the UR platform software environment, allowing supported application packages and communication configurations to be maintained according to the relay hardware revision.

The relay integrates configurable FlexLogic(TM) processing for custom interlocks, protection schemes, and control sequences. The modular design supports I/O density scaling through CT/VT and digital expansion modules including the H6T and M6T configurations.

Frequently Asked Questions

Q: Does the F35 support hot-swappable module replacement during operation?
A: The F35 modular architecture supports field service access to configurable hardware assemblies; however, module replacement procedures must follow GE Multilin maintenance instructions and required system isolation practices.

Q: What communication protocols are available through the CPU and communication module?
A: The relay supports IEC 61850 Ed. 1/Ed. 2, Modbus TCP/IP, DNP 3.0 over TCP/IP, SNTP, and RS485-based Modbus RTU/DNP 3.0 communication.

Q: What is the input capability of the 8F CT/VT module?
A: The 8F module provides dual-rated 1 A / 5 A current transformer inputs and voltage transformer inputs rated for 60-300 V AC phase-to-neutral measurements.

Field Installation Guidelines

• Install the relay in a protected control panel environment with adequate clearance for terminal wiring and front-panel access.
• Use shielded communication cables for serial and Ethernet connections where required by the installation environment.
• Connect cable shields according to site grounding practices to reduce electromagnetic interference on measurement and communication circuits.
• Separate CT, VT, digital input, and communication wiring routes to reduce electrical coupling between signal groups.
• Verify CT polarity, VT phase assignment, and terminal identification before energizing protection circuits.
• Confirm auxiliary supply voltage compatibility before connecting the HF power supply module.
• Ensure protective grounding connections are completed according to substation electrical standards.
• Configure protection settings, FlexLogic sequences, and communication parameters after hardware installation verification.

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