why gravels is used in transformer yard?
Answers were Sorted based on User's Feedback
Answer / asmita
Gravels/metal is used in T/F yard for following purposes-
1.For providing gd earthing as it prevents growing of gross.
2.it prevents travelling of creatures like snake,rats etc
which may result in Short ckt if touchd live parts.
3.In case of oil leakage from C.B.it is well distributed
due to metal n doesnot result in fire.
4.Reason of Step potential n touch potential.
Is This Answer Correct ? | 23 Yes | 0 No |
Answer / varun kumar
gravel surface increases the safety limit for touch and
step potential and hence our same design of earthing grid
becomes more safer.
Is This Answer Correct ? | 12 Yes | 1 No |
Answer / farhan
ans. 5 countinued and also when the heavy raining water can
suc not stored on floor.
Is This Answer Correct ? | 7 Yes | 0 No |
Answer / k.vijayakumar
Gravels having good earthing resistance, So that only we
have used for the same.
Is This Answer Correct ? | 1 Yes | 6 No |
Answer / rakesh
gravels are used because gravels have less resistance due
to which it is very effective for earthing.
Is This Answer Correct ? | 1 Yes | 13 No |
The gravels mainly serves two purposes,
since the core of the transformer experiences high
mechanical stresses which makes the transformer core vibrate
coz of which the complete apparatus vibrates,the poured
gravel absorbs these vibrations.
Secondly,the gravels provides a good earthing path for the
transformer.
Is This Answer Correct ? | 1 Yes | 14 No |
Do Phase angle measurement have any application in freq/harmonics measurement? If so how?
Why a tesa lamp is glow between two phase?
What is the function of earthfault relay?
18 Answers MultiTech, Tech Mahindra,
In power generator sets, when they are coverted from 50hz to 60hz, the kva rating after conversion increases. For example, the manufacturer of a perkins 200kva @ 50Hz generator set has mentioned it to become 220kva after converstion to 60hz. What is the relation between the frequency & the KVA rating. Any formula please.
how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?
Why do we generate 3 Phase AC Supply? It is possible to generate 4 Phase and 5 Phase explain it?
When we synchronize the Generator BKR with TIE BKR then Gen BKR is hold but TIE BKR is Tripped on Non directional over current but when TIE BKR is Syn. with Gen. BKR then no fault occur so what is the problem
why the indian frequency is 50 hz & U.S.Frequency of 60 hz
What is the Maximum Power generation capacity of a Synchronus Machine ??
Explain how you decide what size of electrical wire do you need?
What is the relationship between the sending end and receiving end?
HOW TO CALCULATE GROUND FAULT CURRENT IN 430V 4000AMP AIR CIRCUIT BREAKER?