GE G650 | Generator Protection and Control System

GE G650 | Generator Protection and Control System

The G650 is a Distributed Generation Protection and Control Relay designed for complete protection of small to medium sized generators as well as operate as a control system for distributed generation interconnections. The G650 provides a cost effective and scalable solution that allows for tailoring your protection, communications, and I/O requirements to meet the needs of your specific application.

High performance generation protection relay.

The G650 Generator Protection System provides protection and management capabilities for small to medium sized generators.
It combines protection with external communications and a distributed I/O capability.


  • Protection of small to medium sized Induction or Synchronous Generators
  • Stand-alone or component in automated substation control system
  • Distributed generation and interconnection protection, management, and control where programmable logic is a requirement to interact with prime mover control system


  • Complete distributed generator interconnection protection with two protection options, Basic Protection and Enhanced Protection, to fit your generator protection requirements.
  • Preconfigured with Logic for standard Tripping and Closing operation.
  • Reduce installation space requirements with a compact design incorporating protection, control, programmable pushbuttons, programmable LEDs, and communication interfaces
  • Reduced system event analyzing time and cost through integrated Sequence of Event reports, Oscillography recording, and Trending files.
  • Flexible and cost effective control for complex systems through the use of IEC61131 compatible programmable logic to customize the relay's operation
  • Minimized communication down time through reliable redundant Ethernet Communication ports


Basic Protection Option

  • Phase, Neutral, Ground and Negative Sequence TOC and IOC
  • Neutral and Ground Directional Overcurrent
  • Voltage Restraint Overcurrent
  • Phase Under and Overvoltage, Neutral and Ground Overvoltage
  • Directional Power
  • Under and Overfrequency, and Frequency Rate of Change
  • Generator Thermal Model
  • Generator Current unbalance
  • Loss of Excitation
  • Inadvertent Generator Energization

Enhanced Protection Option (Includes all Basic functions)

  • Sensitive Ground Overcurrent
  • Volts/Hz
  • Power Factor limiting
  • Vector surge loss of mains detection
  • Breaker Failure
  • VT Fuse failure
  • Restricted Ground Fault

Monitoring and Metering

  • Current, voltage, power, power factor, frequency metering, demand
  • Breaker condition monitoring including breaker arcing current (I2t) trip counters, and trip circuit monitoring
  • Event Recorder - 479 time tagged events, with 1ms time resolution•High resolution oscillography and Data Logger, with programmable sampling rate
  • Fault locator, record of last 10 faults


  • Standard serial interface with RS232 , optional USB port - up to 115,200 bps
  • Optional second rear RS485 or serial fiber plastic or glass fiber optic port
  • Ethernet Ports – 10/100 Base TX, 100 Base FX with ST connectors, options for redundancy available
  • Multiple protocols - ModBus™ RTU and over TCP/IP, DNP 3.0 Level 2, IEC 60870-5-104, Http, and tftp.

EnerVistaTM Software

  • State of the art software for configuration and commissioning GE Multilin products
  • Document and software archiving toolset to ensure reference material and device utilities are up-to-date
  • EnerVistaTM Integrator providing easy integration of data in the G650 into new or existing monitoring and control systems


Type the keywords in the form
and we will find it for you.