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Multilin G650

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.

Feature & Benefits 

  • Ideal for Distributed Generator Applications

  • All required protection features for small to medium sized generators

  • Configurable logic for creating customized generator control schemes

  • Cost Effective and Scalable Solution

  • Basic and Enhanced Protection Options

  • Alphanumeric and Graphical User Interfaces

  • Multiple Communication options available

  • Industry Leading Fault Recording Capability

  • Large capacity Sequence of Event Recording

  • High Sample Waveform Fault recording (64 samples/cycle)

  • Long term Data Logger recording

  • Most features available in the Distributed Generation Protection market segment

  • Programmable Control Logic

  • Ethernet Communications

  • High End Fault Recording


  • Protection of small to medium sized Induction or Synchronous Generators

  • Standalone 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 systems

Protection & Control

Basic Options

  • 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 Energisation

Enhanced Options

  • Sensitive Ground Overcurrent

  • Volts/Hz

  • Power Factor limiting

  • Vector surge loss of mains detection

  • Breaker Failure

  • VT Fuse failure

  • Restricted Ground Fault

Monitoring & Metering

  • Current, Voltage, Power, Power Factor, Frequency, Demand Metering

  • Breaker Condition Monitoring

  • Event Recorder - 479 Events

  • High resolution Oscillography and Data Logger

  • Configurable graphical HMI interface

  • Alarm Panel

User Interface

  • Backlit alphanumerical display or optional graphical panel

  • RS232 & RS485 ports - up to 115,200 bps

  • Ethernet ports - redundant 10/100BaseTX copper and redundant 100BaseFX Fiber

  • Multiple protocols - ModBus(TM) RTU and TCP/IP, DNP 3.0, HTTP, TFTP and IEC 61870-5-104

  • EnerVista software - an industry leading suite of software tools that simplifies every aspect of working with GE Multilin devices


G650 Brochure

G650 Manual

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