I have a 5KVA UPS. Total load to be connected almost 3KW. Ordering a battery pack with capacity of 1920VAh. How long will the backup time be?

1 Answers  

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OHMS LAW

9 Answers  

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how to calculate the no. of earth pits required for an electrical installation?

1 Answers   Mepax,

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why the air gap is necessary in the transformer core

1 Answers   Eskom,

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What is transformer break down voltage.And what is flash oil flash point.

1 Answers   HP,

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why can we use cosine wave instead of sine in ac supply as both have same rms vale and ripple factor

0 Answers   Indcoil Transformers, Power Grid,

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Why not connect relay Y phase for over current and earth fault

1 Answers   HB,

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Whether the vacuum contactor requires Short circuit protection?If No,why?

0 Answers   Reliance,

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What will be the capacity of the generator set which can be used for my 2 ton window air conditioner ?

1 Answers  

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How to calcute the cable size for both HT and LT please specify the formula for that Regards Chethan C

1 Answers   Bhel, Student,

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why the colour of insultor stack , petticoat is brown. Is it has some technical reason.

0 Answers  

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A 11000/415V distribution transformer is fed 415V upon it's LT side,Do I get 11000V upon it's Primary side ?

7 Answers  

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