Answer / s.jayan

There are two by-pass systems, One is Static By-pass and
another one is Manual By-Pass. Static By-Pass works
automatically and Manual By-Pass operates only manualy.

Answer / asif

yes we have just 2 bypass auto and mannual when we use the
word ups it means auto matically but when we use dc charger
we can oprate mannually

Answer / shiv

There are two systems bypass one is auto and next is
manually.Which work the auto systems operate the self main
ups and manually not operate the non self so that any
costumer supporting the help.

Answer / muchha mondal

in online ups system has two bypass one is static bypass which is work automatically when inverter off or any fault in inverter ckt the load is transfer to static bypass without interrupted, and anather is manual or maintanance bypass.the maintanance bypass use only for maintanance purpase it should be always off when ups working normal condition.

When do you use a VFD motor?

1 Answers  

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I am working in transmission network, one of my 66kv line having short distance about 6km, when sending end voltage is 67kv receiving end get 69kv, i want to know that, does distance affects in this matter, please explain in this matter & if possible answer me on my mail id, kaushikkumar.vanavi@getcogujarat.com, kaushik.vanavi@gmail.com

5 Answers  

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At the time of 1st charging of transformer, there were huge inrush current, so why at that diffrential relay are not operated? Why?

3 Answers   Adani,

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how to determine the size of power cable according to load current

1 Answers   JSW,

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what is the preventive maintence for ht panels and busbars and vcb abd acb's.

0 Answers   Future Group,

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if 2 coil of 1000W connect in series and 200 v is applied across it . then what is the total power of coil when coil have only resistive load .

1 Answers   BSNL,

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We have a 1275KVA existing Transformer in a power plant project. Customer want to get it test & confirm whether it is a Dyn1 Transformer or not. Pleae let me know how to test it.

1 Answers   Allied Group,

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what are the sections in a high voltage system(eg:incomer,buscoupler,isolator

1 Answers   IGL, L&T,

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plz tell me the potential difference between phase and netrul

2 Answers   CGL,

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I need the recommended size for a 3 phase transformer at 13.8 KV Primary and connected loads of 3000 kVA at 4200 volts and 2375 kVA @ 480 volts AC.

0 Answers   Duke Energy,

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what is difference between c-power & u-power air circuit breaker?

2 Answers   Areva, IIT, Marine Electricals,

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What are the minimum acceptable insulation resistances of insulation of underground cable suitable for 0.440kV,11kV, 33kV and 66kV?

2 Answers  

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