Answer / sudhakar g

If we take the LT panel incoming of the breaker is 1600A
and the transformer rating is 2000KVA.
We have to select the cable for that t/f to incoming
breaker in LT panel
400Sqmm AL cable carry 315A (POLYCAB) then we go for 6Runs
from T/f to LT panels
It is simple to cable runs of the T/F to I/c of the panel

is it possible to flow a current between nutral and earth in a circuit? although nutral and earth having same potential diffrence? i=0/r=0A if any body now any solid reason because i am getting a triping problem in rcbo due to nutral and earth shorting???

2 Answers  

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why 1.7Uo for HV cable Hi pot test?IE standard why?

0 Answers   ABB,

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what is difference between fuse and circuit breaker?

4 Answers  

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Can we get the shock if Power system is unearth means delta type take an rated voltage as 6.6 KV?

9 Answers   Reliance,

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hai every bodi please let me know the test procedure for lightning arresters.

2 Answers  

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how to calculate the cable size in sqmm if load (kw) is given?

5 Answers  

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What is Black-out and Brown-out situation in the context of voltage stability in power system?

1 Answers  

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What are types of HT Motors.

1 Answers  

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Why RCD trips on connecting to one Socket but not trips one other circuit on same RCD.

1 Answers  

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List out the different frequency domain specifications?

0 Answers  

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checking procedure of capacitor based motors.used in fans etc?

0 Answers   Badve,

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At 765Kv, I have seen the use of PT at line side for metering and CVT for protection, although as far as my knowledge is concern, PT at this voltage level will have huge loss and more cost as compared to CVT as CVT can also perform same function of Protection and Metering? So my question is why use PT and not CVT for metering and protection in order to reduce the cost.

1 Answers  

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