Description
⚙️ Product Overview
The GE MULTILIN F650BFBF2G0HI is a Multilin F650 digital bay controller and feeder protection relay designed for feeder protection, control, automation, metering, monitoring, and bay-level applications.
The F650 platform combines protection functions with programmable control logic, communication capabilities, breaker control, event recording, and a graphical HMI. It can be applied to radial or looped distribution feeders and related substation protection schemes.
The F650 supports a wide range of protection functions, including phase, neutral, ground, sensitive ground, and negative-sequence overcurrent protection, as well as voltage, frequency, directional power, breaker failure, autoreclosing, and synchronism-check functions.
The exact hardware configuration and available I/O or communication interfaces depend on the complete ordering code. For F650BFBF2G0HI, verify the nameplate and configuration before replacing an installed relay.

🔧 Key Features
- Digital feeder protection and bay control
- Phase, neutral, ground, and sensitive-ground overcurrent protection
- Directional overcurrent and directional power functions
- Under/overvoltage and under/overfrequency protection
- Frequency rate-of-change protection
- Breaker failure and trip-circuit supervision
- Four-shot autorecloser functionality
- Synchronism-check function
- Programmable digital inputs and outputs
- Graphical LCD HMI with programmable control functions
- Metering, event recording, transient recording, and fault reporting
- Programmable logic for customized automation schemes
- Multiple setting groups for different operating conditions
- Communication and SCADA integration capabilities
📊 Product Datasheet
| Parameter | Specification |
|---|---|
| Brand | GE Multilin |
| Model | F650BFBF2G0HI |
| Part Number | F650 |
| Series | Multilin F650 |
| Product Name | Digital Bay Controller / Feeder Protection Relay |
| Application | Feeder Protection, Bay Control & Distribution Automation |
| Protection Functions | Overcurrent, Voltage, Frequency, Directional, Breaker Failure, Autoreclose |
| Condition / Status | New Open Box / Like New |
| Dimensions | Model/configuration dependent; verify nameplate |
| Weight | Configuration dependent; verify actual unit |
🏭 Typical Applications
- Distribution feeder protection
- Substation feeder control
- Radial and looped feeder systems
- Transformer backup protection
- Bus-related protection and control schemes
- Medium-voltage distribution systems
- Breaker control and monitoring
- Automatic load shedding and transfer schemes
- Substation automation and SCADA systems
- Industrial power distribution networks
🔌 Protection & Control Functions
The F650 provides a broad ANSI protection function set. Depending on the configured hardware and firmware, functions include 25 synchronism check, 27/27X undervoltage, 32 directional power, 46 negative-sequence overcurrent, 49 thermal overload, 50/51 phase and ground overcurrent, 50BF breaker failure, 59 overvoltage, 67 directional overcurrent, 79 autorecloser, and 81 under/overfrequency and rate-of-change protection.
Its programmable logic and I/O allow the relay to participate in breaker control, interlocking, transfer schemes, load shedding, blocking logic, alarm handling, and other customized substation automation functions.
🖥️ HMI & Monitoring
The F650 incorporates a graphical display for local monitoring and control. Operators can view measurements, alarms, status information, protection settings, and single-line representations according to the installed configuration.
The relay can also support event records, fault reports, transient recording, and metering functions, providing useful information for disturbance analysis and maintenance.
🛠️ Installation & Maintenance
- Verify the ordering code — Confirm F650BFBF2G0HI against the existing relay before installation.
- Check wiring — Verify CT, VT, digital input, trip, close, and communication wiring against the approved protection drawing.
- Confirm auxiliary power — The replacement relay must match the existing station control-power arrangement.
- Back up settings — Save the existing protection and logic configuration before removing the original relay whenever possible.
- Check firmware compatibility — Confirm that the replacement hardware and firmware are suitable for the existing application and configuration files.
- Test protection functions — Perform secondary injection and functional testing before placing the relay into service.
- Verify breaker logic — Test trip, close, breaker-failure, autoreclose, interlocking, and synchronism-check functions where applicable.
- Inspect communications — Verify RS-232/RS-485, Ethernet, fiber, or other configured communication interfaces as applicable.
- Review alarms — Confirm that protection, communication, self-test, and power-supply alarms operate correctly.
- Keep a spare — Maintaining a tested F650 spare can reduce restoration time when an installed relay becomes unavailable.
❓ Common Questions & Answers
Q1: What is the GE Multilin F650 used for?
A: It is primarily used for feeder protection, bay control, automation, metering, monitoring, and breaker control in distribution and substation applications.
Q2: Is the F650 only a protection relay?
A: No. The F650 combines feeder protection with bay control, programmable logic, HMI, metering, monitoring, and communication functions.
Q3: What does F650BFBF2G0HI identify?
A: It is the complete ordering/configuration code shown for this F650 unit. The suffix identifies the particular hardware and configuration arrangement.
Q4: Can this relay replace another F650 directly?
A: Not automatically. The complete ordering code, I/O configuration, power supply, communications, firmware, settings, and application wiring should be compared before replacement.
Q5: Does the F650 support breaker failure protection?
A: Yes. Breaker failure protection is one of the supported F650 protection functions.
Q6: Does the F650 support autoreclosing?
A: Yes. The F650 supports a four-shot autorecloser function with synchronism-check capability where configured.
Q7: Can the F650 communicate with a SCADA system?
A: Yes. The F650 platform provides communication and programmable automation capabilities for substation and SCADA applications. The exact interface depends on the hardware configuration.
Q8: What should be checked before purchasing a replacement?
A: Compare the complete model code, hardware configuration, auxiliary power, I/O arrangement, communication interfaces, firmware requirements, protection settings, and physical mounting arrangement.
⭐ Recommended GE Multilin Models
- GE Multilin F650
- GE Multilin F650BABF1G0HI
- GE Multilin F650BFBF2G1H16E
- GE Multilin F650BFBF2G0HIE
- GE Multilin 750 Feeder Management Relay
- GE Multilin 760 Feeder Management Relay
- GE Multilin 850 Feeder Protection Relay
- GE Multilin 869 Motor Protection Relay
- GE Multilin D60 Line Distance Relay
- GE Multilin F60 Feeder Management Relay
📦 Spare-Parts Recommendation
For feeder protection systems using the F650 platform, it is useful to maintain a tested spare relay together with a backup of the protection settings, logic configuration, communication parameters, and wiring documentation. When ordering F650BFBF2G0HI, always compare the complete ordering code with the installed relay to avoid an I/O or power-supply mismatch.
