How does flights get the neutral(grounding)

1 Answers  

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hi i am aziz electrical associate engineer. i am faceing problem in acs800 vvvf drive.it is tripping wothout any alarm/fault.i cheaked all parameters and fault function of drive, all are correct as well as communication parameters.but still it is tripping (drive is tripping in running position not in starting)

1 Answers  

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why indicated sypply only by 440V in 3-phase system.

2 Answers  

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We need to current density & short circuit calculation at 65kA for aluminium & copper busbar.

0 Answers  

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two phases with neutral supply can be taken in 3C X 10 sq.mm cable .

0 Answers   SPCL,

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What is the required bending radius requied at the time of cable laying?

1 Answers  

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In scott connection why connect teaser transformer to 86.6% and main transformer to 50%..

1 Answers   Silicon,

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What is the Diference between DYN 11 and DYN 5 .How to change the Vector group from DYN 11 to DYN 5.

3 Answers  

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why any Elelctricity board insist not to change the buren of their metering CTs or PTs for metering purpose? as a example elect. board not accepted that any customer change their metering CT or PT core burden from 5VA to 15VA.. why?

1 Answers  

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Can we use BS 6651 and BS EN 62305 standards for computer room lightning ptotection in substation?

0 Answers   Jindal,

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for a machine R=130 KVA Y=132 KVA B=144 KVA Then what will be the total kva

3 Answers   ABB,

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what is the question paper model for section engineer in RRB

0 Answers   RRB,

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