GE F650BABF2G0LOSHE Feeder Protection Relay

1. Introduction

The GE F650BABF2G0LOSHE is a feeder protection relay from GE’s Multilin F650 series, engineered for advanced protection, control, and monitoring of electrical feeders in power distribution systems. It combines comprehensive protection functions, flexible communication options, and intuitive user interfaces to ensure reliable system operation. This relay is widely used in utility substations, industrial plants, and infrastructure networks requiring dependable protection and automation.

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2. Technical Specifications (Descriptive Format)

The GE F650BABF2G0LOSHE is designed to provide multifunctional feeder protection, including overcurrent, directional overcurrent, breaker failure, voltage, and frequency protection. It operates with nominal input voltages of 110/120 V AC or 220/240 V AC and current inputs of 1 A or 5 A (software selectable).

The relay is equipped with dual redundant power supply options (24–250 V DC / 110–240 V AC) to ensure continuous operation even during power disturbances. It supports IEC 61850, Modbus, DNP3, and Ethernet communication protocols for integration into modern substation automation systems.

It features a large LCD display and programmable function keys, allowing operators to view system parameters, fault histories, and event records directly. The F650 also provides disturbance recording, sequence of events (SOE) logging, and oscillography for detailed fault analysis.

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3. Structure and Composition

The F650 relay is built in a rugged 19-inch rack-mount enclosure suitable for panel installation. Its modular internal structure includes:

• Main control and processing board

• Input/output interface modules

• Communication board with Ethernet ports

• Front panel with LCD display and keypad

The modular architecture allows quick replacement or upgrading of functional units without complete system disassembly.

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4. Key Features

• Advanced feeder protection functions: overcurrent, voltage, frequency, and breaker failure

• Support for IEC 61850 and multiple other communication protocols

• Dual power supply design for enhanced reliability

• Programmable logic (FlexLogic™) for custom automation schemes

• Disturbance and event recording with time synchronization

• Large backlit LCD screen with multilingual interface

• Self-diagnostic and health monitoring capabilities

• Drawout case design for easy maintenance

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5. Application Fields

The GE F650BABF2G0LOSHE is extensively applied in:

• Power transmission and distribution substations

• Industrial feeder protection systems

• Renewable energy facilities (solar, wind)

• Infrastructure networks (airports, data centers, railways)

• Oil, gas, and chemical process industries requiring critical power management

  
  

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6. Installation and Maintenance

• Mount the relay securely on a 19-inch control panel rack.

• Connect voltage and current transformer (VT/CT) inputs as per wiring diagrams.

• Use shielded communication cables for Ethernet or serial connections.

• Ensure proper grounding to eliminate electrical noise.

• Use GE’s EnerVista software suite for configuration, firmware updates, and data retrieval.

• Periodically review event logs and disturbance records for preventive maintenance.

• The drawout design allows fast replacement of the relay without disconnecting field wiring.

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7. Operational Benefits

The GE F650BABF2G0LOSHE offers a perfect balance between protection, control, and communication performance. Its integration-ready design and wide protocol support simplify SCADA connectivity, while its high-speed fault detection and event recording enhance operational safety and reduce downtime. With strong engineering tools and flexible customization, it stands as a robust choice for modern power protection systems.