Grounding resistor monitoring device NGRM-ENC series

transformer

The NGRM-ENC enclosed neutral-grounding-resistor monitor series is a Type 4X enclosure housing a Littelfuse Startco SE-325 or SE-330 neutral-grounding-resistor monitor and optional accessories, which include: • 480–600 V control power transformer (CPT) • Faulted-phase indication (FPI; implemented with an EL3100 ground-fault and phase-voltage indicator) • Earth-leakage panel meter • Pulse-enable control • Mounting options Appropriate fusing is included and field wiring is connected to terminal blocks. Options SE-325 Neutral-Grounding-Resistor Monitor Measures current and voltage in a transformer or generator neutral-to-ground connection and continuity of the neutral-grounding resistor. For applications in Canada, use the SE-330 to meet 2018 CEC 22.1 requirements. SE-330 Neutral-Grounding-Resistor Monitor Advanced ground-fault and neutral-grounding-resistor monitoring relay that measures neutral current, neutral-to-ground voltage, and neutral-to-ground resistance. EL3100 Ground-Fault & Phase-Voltage Indicator Three panel-mounted LEDs indicate the ground-faulted phase.