© Dimako Transformers 2014

NER Systems

Neutral Earthing Protection System

Dimako Transformers The Leader in Flameproof Mining Transformers and Power Distribution Home About Downloads Transformers & Switchgear & NER Protection Devices & Indicators Training Contact Us
Neutral Earthing Protection System The Dimako neutral earthing system is designed for use on transformer secondaries where it is desirable to reduce the magnitude of a phase to earth fault. The system is readily employed on system voltages from 380VAC to 6.6kV. As a standard the universal panel circuitry provides interlocking facilities for numerous system trip configurations. Indication is given of actual neutral earth resistance in OHMS, regardless of any earth fault that is imposed. Real time indication of neutral current flowing is also displayed and predetermined trip levels can be used for protection or alarm annunciation. The panel design can sustain continuous fault conditions without damage or undue temperature rise