Overview
Configured for multi-feeder protection, control, metering, and communication functions in UR Series protection systems, the GE Multilin F3500HCHF8FH6GM8FP6HCXXWXX (F35 Multiple Feeder Management Relay) provides direct physical and electrical execution. The unit integrates feeder current and voltage acquisition, programmable logic processing, event recording, and network communications through a modular Universal Relay platform architecture.
Suffix Breakdown & Model Matrix
| Code Segment | Description |
|---|---|
| F35 | Multiple Feeder Management Relay |
| 00 | Standard software configuration |
| H | Horizontal 19-inch rack mount |
| CH | Enhanced graphical display, English language interface |
| F | High voltage AC/DC power supply |
| 8F | CT/VT input module |
| H6G | Digital I/O module |
| M8F | Additional CT/VT input module |
| P6H | Digital I/O module |
| C | CPU and communications module |
| XX | Empty option slot |
| WXX | Reserved/empty option slot configuration |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | F3500HCHF8FH6GM8FP6HCXXWXX |
| Brand | GE Multilin |
| Origin | GE Multilin UR Series Platform |
| Weight | Not specified in provided documentation |
| Dimensions | 19-inch horizontal rack-mount format |
| Operating Temp | -40 degC to +60 degC |
| Power Consumption | Dependent on installed module configuration |
| Product Type | Multiple Feeder Management Relay |
| Power Supply | 88 to 250 VDC or 100 to 240 VAC |
| Protection Capacity | Up to 6 feeders (up to 5 feeders with bus voltage measurement) |
| Metering Functions | Current, Voltage, Power, Energy, Frequency |
| Logic Engine | FlexLogic programmable logic |
| Event Recording | Event recorder, oscillography, data logger |
| Communication Interfaces | Ethernet and/or RS485 depending on CPU module configuration |
| Supported Protocols | Modbus RTU, Modbus TCP, DNP3 (module dependent) |
| CT/VT Inputs | Dual CT/VT acquisition modules installed |
| Digital I/O | Multiple digital input and output modules installed |
| Mounting Method | Horizontal rack mounting |
Industrial Communication and Firmware Architecture
The F35 belongs to the GE Multilin Universal Relay platform and utilizes a modular processing architecture in which protection functions, I/O acquisition, communications, and logic execution are coordinated through the internal relay backplane. Firmware compatibility must correspond to the installed CPU and I/O module revisions. Communication services are typically provided through Ethernet and serial interfaces, allowing deterministic exchange of protection, metering, and event data with SCADA and station automation systems.
Frequently Asked Questions
Q: Does this relay support feeder expansion through additional CT/VT modules?
A: The supplied configuration includes two CT/VT input modules, allowing monitoring of multiple feeder circuits within the supported F35 platform limits.
Q: Can communication protocols be changed through hardware replacement?
A: Communication capability is determined by the installed CPU/communication module and supported firmware. Protocol availability depends on the module configuration present in the relay.
Q: Is field firmware updating possible without replacing hardware modules?
A: Firmware maintenance is generally performed through supported service interfaces. Compatibility between firmware revisions and installed hardware modules should be verified before implementation.
Field Installation Guidelines
- Verify control power source voltage before energizing the relay.
- Install the relay in a grounded 19-inch rack according to panel mechanical requirements.
- Separate CT, VT, communication, and control wiring to reduce conducted and radiated interference.
- Ground cable shields according to station grounding practices and relay terminal recommendations.
- Confirm CT polarity and VT phase relationships before commissioning protection functions.
- Perform input verification, output contact testing, and communication validation prior to placing feeders into service.
- Maintain minimum bending radius requirements for communication and control cables during installation.
- Archive relay settings, event records, and firmware information before any maintenance activity.
