How many earthings are provided for a 250KVA distribution
transformer?
Answers were Sorted based on User's Feedback
Answer / vilas
As per rules four earthings are required.
two for neutral. star point
Two for the transformer tank i.e.body of the transformer.
Is This Answer Correct ? | 10 Yes | 1 No |
Answer / ars326
1.Transformer tank
2.Neutral
3.lightning arrestor
Is This Answer Correct ? | 9 Yes | 3 No |
Answer / deadzg_devil
Mainly two types of earthing are provided:
1)System Earthing:The neutral is connected to ground so that in case of imbalance the zero impedance current may pass thru the ground.
2)Equipment Earthing:This is provided to safeguard the outter body of transformer in case any fault occurs or any live wire touches the ground , it can redirect the current to ground.
Is This Answer Correct ? | 1 Yes | 0 No |
Answer / ram
minimum 3 earthing. 1- neutral earthing, 2- body earthing &
3 - common neutral body
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / ullas
mainly two earthing.
1. neutral earthing.
2. transformer body earthing
Is This Answer Correct ? | 3 Yes | 4 No |
Answer / sumudu
Two earth banks for neautral; Common earth for Transformer
body & Lighting Arrestor.
Is This Answer Correct ? | 0 Yes | 1 No |
Answer / k.prakashchandra
Answer No. 1 is correct.For neutral, two distinct connections
Is This Answer Correct ? | 0 Yes | 1 No |
What is difference between miniture circuit breaker and module case circuit breaker up to 63Amp.
What is substation?
Current Transformer's star point must face the protected object for the relay operation?
how wud i know that whether i have to use unitized package substation or transformer?
HOW TO CALCULATE THE LOSSES OF CURRENT FOR LT CABLE JOINTING TO MOTOR SUPPLY.
for 8 mva 33/11 kv transformer what will be the setting of differential relay on which it trip & what is the HF setting in this relay
if 3400kw slipring motor rotor shorting done and motor started on mv drive ,what will be the rotor shoring current
difference between substation & grid substation?
what is the diff. b/w balanced and unbalanced load..?
Why don't we provide SURGE ARRESTORS for Transformer feeders?
phase association of 3PH L&T static CT meter is wrong. means 1PH & 1 CT connected properly and other 2 voltage and CT's inter changed. what would be the impact in the reading?
What are the special cables required for explosion proof wiring?