Electrozad

The PGR-3100 indicates the presence of voltage on each phase of a 3-ph system. The LEDs on the panel illuminate when voltage is present. When A ground fault occurs, the voltage on the faulted phase reduces to ground potential, causing the LEDs for the faulted phase to dim. On A resistance grounded or ungrounded system the LEDs for the unfaulted phases become brighter. Ungrounded ac systems are required by the national electrical code (NEC®) Article 250.21(B) and the Canadian electrical code part 1, section 10-106 (2) to have ground detectors, such as the PGR-3100, installed on the system. External potential transformers (PTs) can be used to step down system voltage, allowing the PGR-3100 to be applied to a ny system voltage. PTs are not required for system voltages up to 600 VAC.

Littelfuse® POWR-GARD® Ground Fault Indication System, Series: PGR-3100, 600 VAC, Panel Mount, 3.5 in H x 4.3 in W x 2.1 in D

• Indicates presence of a ground fault and the faulted phase as well as phase to ground voltage on an energized bus
• Redundant long life LEDs (two per phase) to ensure reliability
• Lamp test button verifies LEDs are operating
• <30 VAC line to ground indicator off voltage

• Specification Sheet https://assets.unilogcorp.com/2/ITEM/DOC/IDW_DOCUMENT_965e4fb943f8667f66e7f029a005dba58c9ffd57a6f46dfbccd090972cea7336.pdf