Answer / lnp

IP stands for Ingress Protection . i.e. Protection against Ingress of solid particles and water. The first Digit indicates solid particles up to 1mm can not enter the equipment and second digit indicates that water sprayed from any directon cannot enter the equipment.

if we have 380 KVA DG. how to calculate Power Factor. With detailed formula

1 Answers  

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What is the use of Gateway RTU like ABB RTU 560 in power plant, SAS system ?

1 Answers   ABB,

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write circuit diagram for a motor rotate in forward direction once it started and when pressed the same button it should rotate in anticlockwise.

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How can we step up ac and dc ?

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why we use circuit breakers for switching instead of normal switching device?

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why ligthing is not available in switch yards?

1 Answers  

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what is the CT & PT. where is it uses.what is the using that plese kindly answer me...?

4 Answers   Cap Gemini, JLL,

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sir,i am swati. i am goin to gv jspl exam on 21st nov'10. iwant previous year question paper. plz help me out. my emailid is swatisinha.dav@gmail.com

1 Answers  

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what is the advantages of having in-built acvvvf (without seperate inverter in the control panel)in the drive system of elevators?

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Why not instal the NGR in 11kv/433kv trasformer?

3 Answers  

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What is the difference between Delta & Wye windings?

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what is the basis for selection of Protection CT class ? How anyone can decide whether to go for 5P10 or 5P20 ?

3 Answers  

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