PGR-6101 Series - Ground-Fault & Insulation Monitor

Littelfuse Protection Relays PGR-6101 Ground-Fault Insulation Monitor

Operates on one- or three-phase solidly grounded, resistance grounded and ungrounded systems up to 6 kV.
The PGR-6101 combines the features of a ground-fault protection relay and insulation monitor into one unit. 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-6101 features two separate analog outputs for optional current and ohm meters, and two separate alarm relays.

FEATURES

BENEFITS

Adjustable GF pickup
(30-200 mA)

Trip setting provides a wide range of low-level protection and system coordination

Adjustable insulation pickup
(60-600 k Ω)

Customizable insulation resistance setpoints for maximum protection

Adjustable time delay
(50-250 ms )

Adjustable trip delay for quick protection and system coordination

Output contacts

Two Form C output contacts for ground fault and insulation-resistance fault

Analog outputs
(0 - 1 mA)

Two analog outputs indicate insulation resistance and ground-fault current

CT-Loop monitoring

Alarms when CT is not connected

Selectable contact
operating mode

Selectable fail-safe or non-fail-safe operating modes allows connection to shunt or undervoltage breaker coil

Access specifications, certifications, check availability and order parts below

Catalog #Supply
Voltage
(VAC)
Supply
Voltage
(VDC)
Relay
Contacts
ApprovalsIEEE Device NumbersRelay
Contact
Operating
Mode
Dimensions
PGR-6101-120120 VacN/ATwo Form C (N.O./N.C.)UL50G
50N
51G
51N
64
74
Fail-Safe or Non-Fail-Safe3.0H X 3.9W X4.5D

pdf icon PGR-6101 Datasheet

The PGR-6101 combines the features of a ground-fault protection relay and insulation monitor into one unit.

pdf icon PGR-6101 Manual

The PGR-6101 Ground-Fault & Insulation Monitor can detect a motor ground fault whether the motor is running (Online mode) or stopped (Offline mode), and can be used to protect a motor supplied by a solidly grounded, resistance-grounded, or ungrounded system.