HI
we face problem in UPS that the 300 AMP IGBT is damaged (EXPLODED)the ups supplier insist that it is earth problem while we connect the ups with locally earth electrodes so i need help to answer the following questions:
1-is it important to connect the nutral to the locally earth electrode or to use seperate nutral from the earth?
2-if the main supply trnsformer(LINE SUPPLY)with poor earth or did not connected well to earth electrode may cause damage to the UPS?any details plz
we face problem in UPS that the 300 AMP IGBT is damaged (EXPLODED)the ups supplier insist that it is earth problem while we connect the ups with locally earth electrodes so i need help to answer the following questions:
1-is it important to connect the nutral to the locally earth electrode or to use seperate nutral from the earth?
2-if the main supply trnsformer(LINE SUPPLY)with poor earth or did not connected well to earth electrode may cause damage to the UPS?any details plz
