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

how does an open delta transformer works

2 Answers  

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WORKING PRINCIPLE OF VACCUM CKT BREAKER ?

2 Answers  

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Differentiate between voltage and current feedback in amplifiers?

0 Answers  

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What is a dominant pole?

0 Answers  

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What is the high tension lines voltage and low tension lines voltage?33 kv is high tension line or low tension.

1 Answers   MPSEB,

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if 3400kw slipring motor rotor shorting done and motor started on mv drive ,what will be the rotor shoring current

0 Answers  

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Why soda is added with water in Lrs of Sliipring motor…to Increase or decrease resistance of water?

1 Answers  

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why we use 630mm single core cable for transformer secondary side and why two neutral cable

0 Answers   Technicare,

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how is working bearing heater?

0 Answers   ONGC,

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What is the differemce between Pulse transformer and Welding transformer.

1 Answers   BARC,

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what is the accaptable voltage between neutral to earth & How to reduse the resistance of earth in chemical earthing

4 Answers  

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1-What is the difference between absorption factor and polarization factor in insulation resistance test in transformers? and why we inject until ten minutes to get polarization factor?

1 Answers  

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