Electrozad

The SE-325 Neutral-Grounding-Resistor Monitor is used on resistance-grounded systems up to 25 kV to monitor the integrity of the neutral-to-ground path and to detect ground faults. It measures current and voltage in a transformer or generator neutral-to-ground connection and continuity of the neutral-grounding resistor (NGR). The SE-325 coordinates these three measurements to detect a loose connection, corrosion, ground fault, or NGR failure, and provides one alarm or trip output contact.

Littelfuse® Neutral-Grounding-Resistor Monitor, Series: SE-325, 120 VAC, 0.5/4 A, NO Contact Configuration, Surface Mounting, 0.1 to 2 s Trip Delay, 5.9 in H x 4.3 in W x 4 in D Dimensions

• 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 to 4 A) - select greatest sensitivity without false operation
• Selectable fail-safe or non-fail-safe contact operating mode
• Standard reset button

• Catalog https://assets.unilogcorp.com/2/ITEM/DOC/Littelfuse_SE_325_Datasheet.pdf
• Owners/User Manual https://assets.unilogcorp.com/2/ITEM/DOC/Littelfuse_SE_325_Manual.pdf
• Specification Sheet https://assets.unilogcorp.com/2/ITEM/DOC/IDW_DOCUMENT_cb5c616e00d6ff9a6e1ef0c36d99122917edcfde104561edf5be9585fbf5f1f0.pdf