dear all, in motor operation , motor is of 100 hp and bimetal relay setting is

dear all, in motor operation , motor is of 100 hp and
bimetal relay setting is 130 amp, if relay is getting
tripped on 120 amp balance current what can be the
reason? Relay is newly replaced. I dont know but is
there any frequency effect in thit case? Can frequency
variation affect bimetal relay operation?

Question Posted / alpesh chauhan

1 Answers
3353 Views
I also Faced
E-Mail Answers

dear all, in motor operation , motor is of 100 hp and bimetal relay setting is 130 amp, if relay i..

Answer / k.prakashchandra

Bimetallic relays are not very accurate.Ambient temp also
plays a role for setting as the relay acts at a certain
temp.Hence you have to compensate for ambient
temp.Frequency has no effect on the setting .

Is This Answer Correct ?

5 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

what is static frequency converter?what is the function...of sfc...?

0 Answers L&T,

How to arrange a hous hold earthing system to keep minimum earth resistance( below 7ohms).

0 Answers

Can you any one explain application of buccholz relay operation and pressure relif device operation of power transformer

0 Answers

what is the meaning of elecrical.

31 Answers Infosys,

Dear Sir how much cable size required from 0.75 kw to 50 kw for electric motor or pump

1 Answers

why two over current realy used in vcb.

2 Answers BSES, Wipro,

what is the major difference between LIBBP & HIBBP.. which one is most preferable..

0 Answers ABB,

What is the use of oil in transformers?

0 Answers

in electrical control panel. how can i choose the cable rating. (example - 11kw motor, 18-25A mpcb}

0 Answers

placement paper samples of mspl company

0 Answers MSPL,

Which phase is prefered for connecting 1phase vt used for synchronism in an OHL? why?

1 Answers Siemens,

what is the formula of starting current of 3phase and 1 phase motor???

0 Answers L&T, WFP,

For more Electrical Engineering Interview Questions Click Here