why neutral of 6.6 kv star connected sq. cage induction
motor does not get earthed, though for earth fault
protection it is must.
Answer Posted / rajesh
As the neutral has high potential when the motor starts.
And else decreases while running. This may cause high flow
of current to earth which is earth fault.
| Is This Answer Correct ? | 0 Yes | 9 No |
Post New Answer View All Answers
What are the types of control system?
If any HVDC line is going with positive & negative(the negative usually have return path of current with earthing electrode). Now the question is if this HVDC earthed electrode which is using as return path and earthed any nearby 400kv or 220kv AC substation equipments. which will be the impact of this on AC substation & its equipment, how severe may be this and what should be the minimum distance require between HVDC earthed electrode and AC substation equipments? It's really an high engineering level question...Dare to answer and increase your knowledge.
i am venkat i got gre 930(verbal 270 quanta 660) and my toefl score 105..here question is why u got less score in gre ? what i supposed to tell...any chance of rejection is there...my accadamics record is very good
if two transformers are placed parallel & both have fault impedance of 50KA will it increase or decrease show example?
WHAT KIND OF LIGHTENING PROTECTION SCHEMS CAN BE ADOPTED FOR THE FLAT ROOF OF BIG DIMENSION.
What is resistance of 50meters, 16sq.mm, single core copper cable?
In hydel power plants, L.A's, S.C's are placed inside the control panel boards. what is the purpose? [already the total body was earthed to ground.]
What is stacking factor? What is its approximate value?
How to calculate the efficiency of Turbo Generator(Alternator) in general....?
List advantges of active filter over passive filter?
There are Two questions about Steam Turbine Generator... What is HRSG bypass of LP, HP used for in power generation? In particualar, in the event that fault of HP bypass, there would be STG TRIP in operation but none on the LP bypass fault...what's the reason ?
explain different losses in a transformer.
who can measure the size of power cable?
why US countries maintains 110v and 60HZ
Define peak time.