Littelfuse PGR-6100-120, PGR-6100 Series, Ground-Fault & Insulation Monitor, 120VAC
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The PGR-6100 monitor combines the features of a ground-fault protection relay and insulation monitor into one unit. The monitor can detect a motor ground fault whether the motor is running (online mode) or stopped (offline mode). It protects against ground faults by monitoring insulation resistance when the motor is de-energized and by monitoring ground-fault current when the motor is energized. The PGR-6100 features two separate analog outputs for optional current and ohm meters and two separate alarm relays. The unit operates on one- or three-phase solidly grounded, resistance grounded, and ungrounded systems up to 6 kV. Selectable fail-safe or non-fail safe operating modes allow connections to shunt or undervoltage breaker coils. The PGR-6100 is unique in that it has predictive as well as protective capabilities.
Specifications
| IEEE Device Numbers |
Ground Fault (50G/N, 51G/N), Ground detector (64), Alarm Relay (74) |
| Input Voltage | See ordering information |
| Dimensions |
H 75 mm (3”) W 100 mm (3.9”) D 115 mm (4.5”) |
| Response delay | < 250 ms |
| Contact Operating Mode | Selectable fail-safe or non-fail-safe |
| Harmonic Filtering | Standard feature |
| Test Button | Standard feature |
| Reset Button | Standard feature |
| CT-Loop Monitoring | Standard feature |
| Output Contacts | Two Form C |
| Analog Output | 0-1 mA |
| Applicable Standards | UL Listed (E183688) (1) |
| Warranty | 5 years |
| Mounting | DIN, Surface |
| Certification & Compliance | UL UL Listed (E183688) (1) |