G650 Generator Protection Relay

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Key Benefits

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.

  • 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 IEC 61131 compatible programmable logic to customize the relay’s operation
  • Minimized communication down time through reliable redundant Ethernet Communication ports

 

 

G650 Generator Protection Relay

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Features

Basic Protection Option
 

  • Phase, Neutral, Ground and Negative Sequence TOC and IOC (50, 50-2/51P,N,G, 51-2)
  • Neutral and Ground Directional Overcurrent (67N/67G)
  • Voltage Restraint Overcurrent (51P/V)
  • Phase Under and Overvoltage (27, 59), Neutral and Ground Overvoltage (59N, 59G)
  • Directional Power (32)
  • Under and Overfrequency (81U, 81O), and Frequency Rate of Change (81R)
  • Generator Thermal Model (49)
  • Generator Current unbalance (46)
  • Loss of Excitation (40)
  • Inadvertent Generator Energization (50/27)
Enhanced Protection Option
 

  • Sensitive Ground Overcurrent (50SG, 51SG)
  • Volts/Hz (24)
  • Power Factor limiting (55)
  • Vector surge loss of mains detection (78V)
  • Breaker Failure (50BF)
  • VT Fuse failure (VTFF)
  • Restricted Ground Fault (87G)
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
User Interfaces and Programming
 

  • Front panel with graphical display, shuttle key, and a RS232 port for local PC access
  • User programmable local display, LEDs and pushbuttons
  • Customizable protection and control functions with programmable logic and FlexCurves™
Communications
 

  • Standard serial interface with RS232 - 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