PGM-8325 Series - Neutral-Grounding-Resistor Monitor

Series: PGM-8325      Obsolete 2013-09-06      Replaced By SE-325 Questions? Contact Littelfuse Support
The PGM-8325 Neutral Grounding Monitor is used on resistance-grounded systems up to 25 kVac to monitor the integrity of the neutral-to-ground path. It measures current and voltage in a transformer or generator neutral-to-ground connection and continuity of the neutral-grounding resistor (NGR). The PGM-8325 coordinates these three measurements to detect a loose connection, corrosion, ground-fault, or NGR failure, and provides one alarm or trip output contact.

FEATURES

BENEFITS

Continuous NGR monitoring

Detects resistor failure within seconds, reduces transient-overvoltage risk, removes risk of ground-fault-detection failure

Ground-fault
Detection

Main or backup protection to detect a ground
fault anywhere on the monitored system

Adjustable pickup (0.5 - 4 A)

Select greatest sensitivity without
false operation

Adjustable time delay (0.1 - 2 s)

Adjustable trip delay allows system coordination

Output contacts

Form A output contact

Selectable contact operating mode

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

Access specifications, certifications, check availability and order parts below

Catalog #Supply
Voltage
(VAC)
Relay
Contacts
ApprovalsCompare
PGM-8325
Obsolete: 2013-09-06
120One Form A (N.O.)CSA
PGM-8325-E
Obsolete: 2013-09-06
240One Form A (N.O.)CSA

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