Answer / bhupatmeer

In a.c. current and voltage waveform fluctuating.so we can not getting proper value.so we use d.c. meger.

How to calculate the breaking capacity(like 15ka,20ka) of Circuit breaker (MCB,MCCB,ACB)

9 Answers   Career Excellent Sdn Bhd, Neona, Northern Max Engineering, Sps Renewables, Terasaki, UEM,

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Why HT 11 KV Slipring Motors are connected in star ?

0 Answers  

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I do wonder why current is present in neutral wire?i check single phase lead current feeding air conditioner...on its phase its current was 10A while same was 10A in neutral...as we know in neutral voltage is zero so if voltage is zero then how current appears on amp meter? my second observation is (just imagination)when I touch phase wire it give me shock but when i touch neutral nothing happens although as above its carrying current(amps) third but with same logic...as in simple Alternate current sine curve there is + and there is negative peak.means every time phase changing so how come every time same phase and same neutral stand (pardon for english mistakes)

1 Answers  

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does buccholz in a transformer use batteries

2 Answers  

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There are a Transformer and an induction machine. Those two have the same supply. For which device the load current will be maximum? And why?

4 Answers  

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Give me clear explanation.What is the Different Between Load break switch and Vacuum circuit breaker

1 Answers  

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How to calculate pitch, gauge of winding wire, and No. of turns for 30HP, 3 phase, 4 poles 50Hz, 380V induction motors

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WHY HUMMING SOUND OCCURED IN HT TRANSMMISSION LINES?

6 Answers  

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what are the advantages disadvantages of connecting high voltage block( 1:1 transformers) transformers between the turbo generators and busbars.

0 Answers   Bajaj,

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Dear sirs, pls check this 4-20ma to RS485 module datasheet,pls guve me some suggestions. http://www.szsunyuan.com/sy/pro_more.asp?Productid=539 Thanks. E-mail:yunianjiang99@gmail.com

0 Answers  

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is earthing is necessary if we use armoured cable

1 Answers   ABB, Schwing Stetter, Siemens,

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WE are using a 63A MCCB(SIEMENS MAKE) for one of the feeder in LV substation panel.It is supplying to a lighting & power socket DB.Settings in the MCCB is Ir = 63 * 1 , Isd = 8 times of Ir , tsd = 0.5 sec( I2 t off). Sometimes this MCCB is tripping .But no trip in DB MCB. Can anybody tell me reason ? From where i can know about the MCCB settings?

5 Answers  

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