why ht motors are connected in star?

1 Answers  

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when we conduct high voltage testing why milli amp. is required?

2 Answers  

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How you take care of a motor from over loading and what are the different overloading ratings of different motors?

4 Answers  

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What are the maximum and minimum ratings of MCB,MCCB,ACB,OCB,VCB and SF6 breakers?

2 Answers   ABB, SK E&C, Sodexo,

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What is the formula to calculate the rating of a thermal over load relay

2 Answers  

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What is a difference between indoor transformer and outdoor transformer of same rating

0 Answers   Suzlon,

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What is star-delta transformer?

0 Answers  

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How many types of oil using in H/T & L/T Oil Circuit Breakers. need Explenation ?

0 Answers  

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What is the difference between online and offline UPS

1 Answers  

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how capacitor active and reactive.

1 Answers   Birla,

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RESPECCTED SIR/MADAM- I AM PRERING FOR SECTION ENGINEER (ELECTRICAL) RRB CHANDIGARH PLEASE SEND ME SOME PREVIOUS YEAR QUESTION PAPER OR MODEL PAPER.MY EXAM IS ON (30- NOVEMBER 2008).I AM VERY THANKFUL TO YOU. FROM- HARENDRA SINGH YADAV

0 Answers  

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( Re: WHAT SHOULD BE THE RATING OF MCCB FOR 415V,3Ph,50KVAR CAPACITOR BANK Answer # 1 The capacitor current would be kvar x 1000 / (415 x sqrt3). This would be 70a approx. The MCCB selected should have *atleast 1.4 times this current i.e. 1.4 x 70= 98. So you should choose at least 100 A mccb.) regarding to this answer,i would like to know why the current have to times 1.4 to get the right amphere for the mccb.hows the formula to get the 1.4??tq

2 Answers  

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