Why we use less dia. fuse and conductors at H.T. side, although we use higher dia. cables on L.t. side?
Answers were Sorted based on User's Feedback
Answer / shri..
In HT line Voltage is high & current is low
In LT Line Voltage is Low & current is high.
If we take a example of Stape down Transformer
Is This Answer Correct ? | 11 Yes | 1 No |
Answer / virendra joshi
Universaly W(power) = V X I , mean for a constant power if
current increase Voltage decrese & if viltage increase
current Decrese. In LT voltage is less ( 415 ) so current
is high & fuse is bigger in size, simonteniously in HT volt
is more then current is less hence size of the fuse wire
will be lesse in terms of cross section.
Is This Answer Correct ? | 4 Yes | 0 No |
Answer / al amaan
The size of the cable(Conductor) is choosed depends on the current value
For Example In 1000 KVA,11 KV/433 V Step down Transformer
Formula for calculate Power in KVA; P=√3*V*I
Current Formula; I=P/(V*√3)
Current in H.T side; ; I=1000/(11*√3)
I= 5.25 A
Current in L.T side; I=1000/(433*√3)
I= 133 A
From that the current in L.T side is higher than the H.T side So we use Higher dia cables in L.T side
Is This Answer Correct ? | 1 Yes | 0 No |
Go to a university that has an electrical engineering
curriculum an you will see the light.
Is This Answer Correct ? | 2 Yes | 3 No |
What will happen if we give AC supply to DC motor?
What do you mean by nominal ratio of instrument transformer?
can i use 4 number of circuit breaker as single phase manual change over switch? if yes then how plz also send ckt diagram at nazimzamurad@gmail.com
How turns ratio test is done in three phase transformers?
Following test should be conducted to find out relative polarity of transformenr terminals A no load test B back to back test C phasing out test D none of above
can u tell me the promotion from oiller to enginer
how desiel generate sart fail of eb?
Explain the iniluencc of short circuit ratio on the pert'orniancc of synchronous machine.
Why do we will ground the positive terminal in electrostatic precipitator
What is difference between dc three point starter and dc four point starter?
why we step up voltage for reducing the loss, even if voltage and current are proportional anr resistance remains same
why would amp draw on neutral wire be as much as amp draw on the hot leg.