Jul 27, 2015 #1 J jangra Newbie level 3 Joined Jul 23, 2015 Messages 3 Helped 0 Reputation 0 Reaction score 0 Trophy points 1 Activity points 16 A 3 phase ups installed with surge protection and proper earthing. With input to the ups is on e-n voltage goes above 10 volt and with input off e-n comes below 1.5 volt. Same earth resistence varries . what may be the poossible cause????
A 3 phase ups installed with surge protection and proper earthing. With input to the ups is on e-n voltage goes above 10 volt and with input off e-n comes below 1.5 volt. Same earth resistence varries . what may be the poossible cause????