Answer / raja

BIS 3043 , IEEE 80 is for AC substation earthing. Apart from
this for lightning protection IS 2309 , IEC 61024 , BS 6651,
etc.

Answer / vrishali ajagaonkar

For earthing calculation IS-3043 & IEEE-80 are using. i dont
have idea about IEC.

what is the difference in operation of 3 phase motor when am forward delta connection and reverse delta connection?

1 Answers   Birla,

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i want to ask that as everybody knows that in star connection on star point is called neutral. my question is that why on that poin called neutral. what is the reason behind it. what is the logic behind it. i heared somewhere that on this point all phases current become zero thats why. if this answer is right then prove why on that point is current become zero. if this answer is not right then tell me the right answer. post ur answer here or on my mail address. m.ikram786@yahoo.com m.ikram555@gmail.com. thanks.

1 Answers  

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why do power factor in the three phase induction motor increases with the load ???.

3 Answers   Jindal,

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what is the use of neutral displacement relay

1 Answers   OCL,

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what is split phase ac system?

3 Answers   AMIE,

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WHAT IS THE SIGNIFICANCE OF VECTOR GROUPS IN TRANSFORMER? WHAT WILL BE EFFECT WHEN PHASE DISPLACEMENT CHANGES IN TRANSFORMER?WHAT IS THE NEED TO BE PHASE SHIFT CHANGE BETWEEN THE PRIMARY AND SECONDARY WINDING

0 Answers   TCS,

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Which types of gate insttaled in static switch. Please give me answer.

0 Answers   cpgn,

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How to calculate cable sizes in sq.mm. with using motor KW? Any formula there?

18 Answers   Aswani Properties, BRB Cable, Construction, Hitachi, L&T, Microcool Systems, Nahar, NWPF, Reliance, Renault, Saha Bright Polytech, SGH, TATA, Techno Electric and Engineering, TFIL, Thermax,

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What are the Formula of computing Back up Time of 500kVA UPS with 4 Battery Banks, each bank composed of 43 pcs of Batteries 12V150Ah. How to compute the Back up Time of UPS? We have also 3X500kVA UPS running in Parallel same composition as I write above.

0 Answers  

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what is different between DIGITAL and ANALOG?

3 Answers  

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what is the function of RMU?

4 Answers  

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What is the rating of your capacitor bank at your company.

36 Answers   Ajnara Group, Amara Raja, Amol Electricals, Apollo, ATC, Bhagiradha Chemicals & Industries, Bharat, CBRE, Cisco, Government, JLL, MEIL, Reliance, Sterling, TNEB Tamil Nadu Electricity Board, Torrent Pharma, Victory,

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