Answer Posted / gunasekaran
for neutral earthing
1.for three four wire sys.
2.if it source end it should be earthed because earth fault
current getting return path.
3.resonance is avoided.
4.for distribution load to maintain the balance condition.
5.at earth fault condition ifit is solidly grounded voltage
buidup at another two phase are getting only 80%line voltage
so no insulation problem.
for body earthing
1. to avoid the shock.
| Is This Answer Correct ? | 8 Yes | 3 No |
Post New Answer View All Answers
In AC if the direction of current keeps reversing every half cycle, how does it propogate through the transmission lines?
working of diesel generator ?
i am an maintenance engineer. one distribution board have 5 feeder. recently its ELR trips frequently, but it take some times after trip( 10min,20min..)but 3 feeder no load. two feeder only loaded. i checked one feeder IR value all values are above 50Mohm.but B phase to Earth is only 9Mohm.any problem about low value
a governer in an Ic engine controls the
We need to current density & short circuit calculation at 65kA for aluminium & copper busbar.
What is the dc grounding system and what is diff between AC/DC grounding system?
what kvrah y we need to take the readind of that
Why control of DC motor is simpler?
how will calculate the safe starting current of 3-phase squirrel cage induction motor?
in conventional fan regulators how the current varies with speed?
please give me all the Alarm .Trip ,Safety Relays & Conditions of Diesel-generators mail me on ashokbabunhce@gmail.com
HOW can i REuse the fused MLL LAMPS & GLS LAMPS at our factory
we have amp, voltage, kw, length detail then how to calculte copper & alluminium size of conductor of 3-phase induction motor
What is resolver and glass scale in CNC how they work?
Approach of a cooling tower is the difference between temperatures of what factors?