an amazing situation was faced when an alive distribution panel with 415 volts and carrying almost 200Amps has become short and this metal cubical showing 220 volts against neutral and earth. to redress any confusion i checked the panel with help of single 200watts test lamp which also glowing with max.intensity b/w neutral & metal body of DB. amazing situation is that i hold the DB firmly more than once with necked foot means without insulated shoes but not received any electrical shock. whereas our all running gen sets neutral points also proper grounded and this short DB was completely earthed , this is beyond my understanding . any body explain how is it possible . our running gen set neutral also grounded firmly
Answer Posted / k.prakashchandra
Measure voltage between neutral and phases , it appears that neutral is connected to a phase , being isolated
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What is Phase to Phase clearance for 800V System Operating Voltage as per IEC61439
IN MY SYSTEM THERE IS ONLY OVER CURRENT EARTH FAULT RELAY IS AVAILABLE. FOR THE UNBALANCE SENSING IS THERE ANY RELAY IS AVAILABLE? THE SAME CTs WHICH ARE USED FOR THE OVER CURRENT EARTH FAULT RELAY CAN USE FOR UNBALANCE ALSO?
how to increase or decrease speed in DC shunt motor by DC convertor
From what on-site components does the HT panel monitoring the bus-bars in a 11kV system take inputs?
what is the most permissible winding temp when we conducting a generator load test?(condition no load)
EXPLAIN THE TRANSFORMER MAINTENANCE?
sir please send me techinical questions for junior engineer posting in bangalore railway i am diploma holder
Dear All, I am new in construction company , my boss ask a question at time of interview , If we have 60MW generation and Single Power Transformer step-up we have. if CMR 50/60MVA , ONAN, ONAF respectively , is it sufficient or not ? for that much power to transfer,
Testing procedure of DG alternator stability test
i want to know that how the height of Ct ,cvt ,LA calculated on the basis of creepage distance
What is grid collapse? what is the reason for it?
What will be the diameter of pipe between conservation tank and transformer
what is the function of impulse relay
the problem faced on star or delta winding connection??
What is power distribution criteria for converting single phase unbalanced residential load to 3 phase star connected balance system. Does total KW converted to 3 Phase. Means Divided by root 3.