Answer / pillay

It is armoured.to arm is to protect against harm. So
armoured cable is cable with some kind of protection like
steel wire, copper tape, lead covered, pvc, xlpe, or steel
conduit or some other type.In unarmoured cables it is
unprotected cables other than electrical insulation.Than the
user decides to provide the necessary mechanical protection
as necessary.

What is deference between MCB & MCCB & ISOLATOR

0 Answers   Prakash Industries, Standard Chartered,

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Zone of protection and tripping scheme of arc protection relay.

0 Answers   KSEB, L&T, Siemens,

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Basic philosophy of applying 3P tripping for uptill 132KV switchyards & for 132KV & above 1P/3P tripping is used.

1 Answers   L&T,

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If we use 250A MCCB as a incomer in Control panel for a fault level of 50kA for one second ,assuming temperature rise from 85 Deg. to 100 Deg , Then what will be the Aluminium Bus-bar size for 250A MCCB? Explain in detail.

0 Answers   Usha Capacitors,

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We have 420volts, Diesel gen-sets each 750kva 4nos. we are operating with bus bar duct having 10x150mm for each face 4nos. our question is what is the minimum gap required between each face? is there any satutory regulations?

1 Answers   Alliance One,

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How to model "IF ELSE" statement in matlab simulink?

4 Answers  

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what are the oils used in transformers cooling? n which type transformer is used in power systems?

1 Answers  

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Hi ,what the accurate method to set correct(In) over load to protect the 3~ motor

4 Answers  

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Why the steam turbines are run at high speed where as the hydro turbines are run at low speed?

1 Answers  

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anybody can give the voltage value for 1M ohm

2 Answers  

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what is the difference between high impedance REF & REF, same high impedance differential protection & differential protection for Power transformer?

1 Answers  

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What is the cut-off rate?

0 Answers  

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