Helping the mining industry grow in a sustainable wayLearn more
Energy education from anywhere for efficiency everywhereFree Online Courses
Your fastest way to answers!Download Now
Schneider Electric Egypt×
When the Neutral CT is not connected, the Earth Fault protection still operates in Micrologic 6.0 trip unit as it works on the principal of vectorial sum calculation of 3 phases.
In case of Earth Fault, the internal current sensor which makes the vectorial sum, detects the Earth Current and gives a tripping order according to Ig (Earth Fault Current) and tg (Tripping time for Earth Fault) settings.