what are the types used for alternator earthing,what will
happen if more than two alternator is working in
parallel with each having own system earthing.is there any
possibility for circulating current in between two system.

Answer Posted / prw

The earths of each alternator must not be connected at the
same time because this will result in third harmonic
current flowing causing excessive heating. The earth should
be switched so that only one earth is connected to ground

Is This Answer Correct ?    17 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Why neutral cable carry current.

1514


Dyn1 transformer vector group testing how to do

1329


I have 2 KW electric water heater.I am gonna use it in controlling water temp.so I needed to increase or decrease the heating capacity.is there any electrical-electronic circuit for varying the resistance & so current?

2574


what could be the RMS value and average value of a 4 phase sine wave?

1415


What is the working principle of CFL & T5 tube light & 40W tube light with electronic ballast?

3496






I am inpecting a 10kVA UPS what tests should i do and should i observe?

1797


Usage of flywheel diode in relays

1465


In vapour absorption refrigeration machine fluids used are

707


what is the working process of over & under voltage relay.

1606


what is meant by poly phase induction motor ? how its operating by single phase or three phase?

1717


If rotor works in clock wise what happens

1440


What is magneto on a gas generator. how it functions. its out put is d.c or a.c. how it can be checked for correct functioning

1504


what is the size of ht cable of 33kv ht line and transformers ratings are 1 Mva and 5mva.please send formula also.

986


what kelvin's law ?

1603


List few applications of d.c series motor?

698