Answer / ashish patil

Preclose means breaker in off condition it supervise the trip coil & trip ckt is healthy.
& Postclose means It supervise When breaker is ON.

Answer / k.prakashchandra

It will supervise the trip circuit before and after closing
the breaker

what is bus coupler, where it used.

14 Answers   Diebold,

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2 Answers  

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tell how current tranfomer works

2 Answers  

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3 Answers   Cisco, HP, ICC,

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1 Answers  

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what is droop control?

0 Answers   BARC,

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2 Answers   NNN,

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1 Answers  

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10. THE MOST COMMON TYPE OF THREE PHASE IN UNSYMMETRICAL FAULTS IS ........

6 Answers   SSC,

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0 Answers  

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What will the effect on a motor designed at 60 HZ, and operated on 50 HZ ??

8 Answers  

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What are the reasons for the parallel operation of transformers?

0 Answers  

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