SE-325ENT - SE-325 Series

Series: SE-325
Questions? Contact Littelfuse Support
External overview image
Roll Over to Zoom
Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

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.

Property (Mouseover for details) Value
Relay Contacts Config 1 Form A (N.O.)
Supply Voltage ac 240
IEEE Device Numbers 50G - 50N - 51G - 51N - 59N - 86
Relay Contacts Operation Fail-safe / Non Fail-safe
Weight (lbs/g) 0 Kg
Auto Manual Reset Non-latching
Conformally coated Standard
Frequency 50; 60; ASD
GF Trip Level A 0.5 - 4.0
GF Trip Time s 0.1 - 5.0
Harmonic Filtering Standard
Reset Type Front-panel switch/Remote Kit
RF Trip Level V 20 - 400 (systems up to 5 kV); 100 - 2000 (systems over 5 kV)
RF Trip Time s 5
System type Resistance Grounded AC
To request product environmental information, please complete the Product Environmental Information Request Form.