Littelfuse SE-325E

The SE-325 Neutral-Grounding-Resistor Monitor is designed for use in resistance-grounded systems operating at voltages up to 25 kV. This device plays a critical role in monitoring the integrity of the neutral-to-ground path by measuring the current and voltage at the transformer or generator neutral-to-ground connection. Furthermore, it assesses the continuity of the neutral-grounding resistor (NGR).

By coordinating these essential measurements, the SE-325 can effectively identify various issues, including loose connections, corrosion, ground faults, or failures in the NGR. In response to such conditions, it is equipped to provide a single alarm or trip output contact. The device is approved by CSA and operates at a supply voltage of 240 VAC, making it suitable for a range of industrial applications.