PGR-3100 LITTELFUSE | Alldatasheet

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Protection Relays & Controls © 2014 Littelfuse Protection Relays & Controls Ground-Fault Protection – Ungrounded AC Systems PGR-3100 SERIES Ground-Fault Indication System

Description

The PGR-3100 indicates the presence of voltage on each phase of a three-phase 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 and the LEDs for the unfaulted phases to 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 any system voltage. PTs are not required for system voltages up to 600 Vac. Specifications Input Voltage Up to 600 Vac 50/60 Hz Indicator Off Voltage < 30 Vac line to ground Dimensions H 88.9 mm (3.5”); W 108 mm (4.3”); D 54 mm (2.1”) Test Button Local Approvals CSA certified, UL Listed Conformally Coated Standard feature Warranty 5 years Mounting Panel ORDERING NUMBER MOUNTING PGR-3100 Panel mount

Ordering Information

Simplified Circuit Diagram FEATURES BENEFITS NEC® and CEC Code compliant Meets National Electrical Code (NEC®) Article 250.21(B) and Canadian Electrical Code Part 1, Section 10-106 (2) requirements for ungrounded systems Phase LEDs Indicates presence of a ground fault and the faulted phase as well as phase-to-ground voltage on an energized bus Redundant LEDs Redundant long-life LEDs (two per phase) to ensure reliability Lamp test button Verifies LEDs are operating Features & Benefits A PGR-3100 UNGROUNDED SUPPLY B C A PGR-3200 B C (Ground-Fault Indication System) (Ground-Fault Protection System) Rev: 4-C-093014 Based on Manual Rev 6 Littelfuse reserves the right to make product changes, without notice. Material in this document is as accurate as known at the time of publication. Visit Littelfuse.com for the most up-to-date information. Littelfuse.com/PGR-3100