Answer / vinod

for 3 phase balance phase voltage, earth fault detection
and humen/equipment safety

Answer / kavi

Fcuk damnit, distribution transformer earthing is required
to provide a zero reference for single phase loads, assuming
TT distribution. It balances the phase currents. Balanced
loads rarely exists on distn trx. Also, the third harmonic
current generated due to magnetisation of the core will be
grounded.
Power tx require grounding for the latter purpose and for
insulation reasons. more economical to fabricate a tx with
phase voltage insulation than delta.

Answer / ayid

for balancing purpose and safety particularly 3phase tx

Answer / chinmaya

Earthing is required for grounding the excess current.

Answer / sarvesh singh

earthing is done as to complete the circuit. Else it could
also be connected to a neutral wire. In many houses there
is one wire connection i.e. live wire and for the neutral
we use as a ground. in transformer in primary there could
be some current in neutral wire so we need earhing so as to
have proper output voltage

which bridge is used to measure frequency?

2 Answers  

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ro plant grundfos bm30type pump.we start the pump using siemens 3rw 4423-1bc44, 30kw soft starter. bur its failier frequently. so we planed to change the dol starter. sp please tell me any budy its possible or not翿შ†

1 Answers  

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What are the protections for safe running of electric generator?

1 Answers   Hetero,

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Require Generator Capcity ( KVA ) for 3 Phase Motor having 4.7Kw with starting current of 16amps?

1 Answers  

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400 kvtransmission lines in india are connected in star or delta

10 Answers   NTPC,

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what do u understand from filter factor of reactor?

1 Answers  

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why transformer rating is given in kva?

2 Answers  

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which type of insulation are used on 132kv transmission line

4 Answers  

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why we ground the scondary of current transformer.

4 Answers  

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how can we use isolator as breaker

4 Answers  

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Can anyone explain me about the RLC based Impulse high voltage generator and how to and operation of Series resonant High voltage reactor...?

1 Answers  

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what is corona effect

3 Answers  

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