Ground Fault Protection Relay

PGR-4300 Series – Generator Ground Fault Protection Relay

The LittlefusePGR-4300 series Ground Fault Protection Relay operates on solidly-grounded ac systems. This generator ground-fault relay provides a simple method for detecting a ground-fault condition on generators without the need for current transformers (CTs). The lack of CTs greatly simplifies the installation process. This relay also monitors the neutral-to-ground path for continuity, and it is compatible with both three- and four-pole transfer switches. The PGR-4300 relay is ideal for any generator or application where there is not sufficient space to install CTs.

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Feature

  • No CTs required
  • Adjustable pickup (100–1200 A)
  • Adjustable time-delay (0–1.0 s)
  • Output contacts
  • POWR-GARD® technology
  • Analog output (0–1 mA)
  • N–G continuity alarm
  • Passive filtering

Specifications

  • IEEE Device Numbers: Ground Fault (50G/N, 51G/N)
  • Input Voltage: See ordering information
  • Dimensions: H 75 mm (3.0”); W 55 mm (2.2”); D 115 mm (4.5”)
  • Trip Level Settings:     100-1200 A
  • Trip Time Delay Settings:  0-1.0 s
  • Contact Operating Mode:   Non-fail-safe
  • Test Button:   Local
  • Reset Button: Local and remote
  • Output Contacts: Form C
  • Analog Output: 0-1 mA
  • Conformally Coated: Consult factory
  • Approvals: UL Listed (E183688)
  • Warranty: 5 years
  • Mounting: DIN, Surface (standard) ,Panel (with PMA-55 or PMA-60 adapter)

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