GE GPM-F | Field Ground Protection Module

GE GPM-F | Field Ground Protection Module

The field ground protection module, GPM-F works in combination with the Multilin G60 to detect ground faults in the field winding of the generator. Providing application flexibility, the field ground protection module can be configured for either single point injection or double point injection based on application requirements. The solution includes: two stage field ground detection, injected voltage and current supervision, brush lift-off detection, field over and under current elements and field ground fault location.


  • Medium to large generator applications
  • Deployable with redundant generator protection systems
  • Suitable for use with generator field voltages up to 800V


  • Providing advanced field ground fault protection for generator applications
  • Allowing both single point and double point injection methods provides optimal application flexibility depending on system configuration
  • Reduce generator down-time by locating the fault within the field winding when connected in single point injection method
  • Designed to operate with Multilin's industry leading G60Generator Protection System
  • Continuously monitors and protects the generator during stopped, starting and running conditions for increased asset life•Reduce system configuration time by configuring the Field Ground Protection Module through the G60 Generator Protection System and the easy-to-use EnerVista Setup Software
  • Increase generator lifespan by easily upgrading your current G60 generator protection relay with the Field Ground Protection Module
  • Simplified setup and configuration using EnerVista setup software


  • Two stage field ground resistance based element - 64F
  • Wide range fault resistance coverage (1- 500Kohms)
  • Injection frequency range 0.1 – 3Hz based on field winding capacitance
  • Fault location feature while using single point injection
  • Brush-lift off detection
  • Injection blocking input for field flashing condition
  • Supports redundant G60 configurations
  • Field over current and field under current elements using dcmA input of G60

  • Injected voltage and frequency supervision
  • Extensive internal diagnostics with critical-fail relay
  • G60 detects loss of communication with GPM-F

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