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For weather condition protection we will use various thing for indoor machines there is no need but for outdoor ie:-
for transformer we use LA
For motor & Generator we use Canopy
In summer time we use cooling arrangement for substation for CT & PT units.

Why R ph of Hv and Lv is shorted or joined together while taking vector group?

1 Answers   IOCL,

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why transmission voltage is 230kv and not 220kv which is a multiple of 11

1 Answers   Mettur Thermal Power Station, Siemens,

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What is mean by power factor?

18 Answers   Shreem Electric Ltd,

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How I calculate the ELCB for circuit breakers?

0 Answers  

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What is LMU and LMDU. in PLCC communication of 132 kv transmission line. is it possible to use only one LMU with out LMDU ?

1 Answers  

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what is zinc diffusion?

0 Answers  

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why are laminations used in constructing the field core?

3 Answers  

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it is in our knowledge tht right plug of supply of residential suppy system is phase n other is neutral...howevr the battery charger of mobile works in both ways...i mean it is not restricted in only one direction.ny of the holder of charger can hav phase .so y is it not lik tht phase of supply must b connected 2 phase of charger...?

0 Answers   TATA,

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Witch do depand of Power factor and theory of power factor?

0 Answers  

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What is different between Difnit time and instatous over current relay

0 Answers   NCC,

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Why power genaration in India is at 50HZ while America its 60HZ

0 Answers   TATA,

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what is the difference between star and delta connection ? when we use each one ?what is the best ?

14 Answers   Amara Raja, Daikin,

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