Answer / k.prakashchandra

If other 2 phases are OK ,it may be due to open circuit in
that phase.If other 2 phases show 50% ,it may be due to one
phase missing in the primary of substation power transformer

Answer / ambai algates

if 1 phase open the unbalance current is flow through
neutral , so its exit the setting bkr trip .if there no
load you got 230v only in phase to open phase

Answer / akash`

check your high tension line d.o.if three d.o. is ok then
substation problem not coming one phase means single phasing
problem call it

I have an existing old MCCB. ABB Model SACE, the rating are: Ue = 660 volts, Iu =1250 Amps, 3 poles, Ith (max) =800 amps at 45 deg C. I need a circuit breaker for my 3 phase motors, 380 volts 60 hz. the supplier required the minimum ampacity of the breaker to be 911 amps. can i use this breaker with rating of Iu =1250 amps but Ith = 800amps maximum?

0 Answers   Siemens,

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What is d main advantage of using double circuit 3 phase transmission ?

0 Answers   UHG,

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What is floating earthing?

2 Answers   Equate,

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What do u understand voltage reg. of an alternator?

0 Answers   IOCL,

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why should we place 9KV lightning arrestors in 11KV substation ?

9 Answers   DOL, ISRO, Matrix,

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what is the type of pilot wire in pilot relay?

1 Answers  

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why two windings are using in single phase AC motor

3 Answers  

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what is different between earthing and grounding for a electrical eqipment ?

2 Answers   BARC, Omega Maritime,

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What does OHB stand for in specifications for circuit breakers, especially found in SF6 circuit breaker?

1 Answers  

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what is the relation between frequency and inductive reactance in a d.c supply?

2 Answers   L&T,

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What Different of Ht Side VCB & SF6

2 Answers  

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Why machine give shock

3 Answers   Akij, Bhel,

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