Answer / kiranganesh

I use online and normally all guys use this one only.Because
when main supply is there than it will switches to load
directly and same time charges its battery,if main supply cuts
than it will discharge its battery

Answer / pankaj rathi

In online ups Battery circuits remains allways in line i.e. UPS is connected to load through battery bank. But in ofline ups battery ckt remains as a standby .whenever the supply get cut then ups take the load through battery system.

When a fourth resistor is connected in series with three resistors, the total resistance

1 Answers   ITI,

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What is the need of earthing transformer for delta side of a transformer. (Think of a line section between a star/delta transformer at a grid substation and delta/star transformer at a village. An earthing transformer is there at the delta side of the star/delta transformer at grid substation). As there are no ground reference there will not be fault current if a one phase is grounded. Further L-L phase will be sensed by the primary side of star/delta transformer as a L-G fault. So why an earthing transformer is required at delta side

0 Answers   CEB,

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Write the programming software name for LG, SIEMENS,Messung,AB

0 Answers  

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how many type of of electrical fuse please explan?

9 Answers  

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What is harmonics and how the 1st,2nd,3rd etc harmonic levels

2 Answers  

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How to determine the Power factor is Leading,Lagging & Unity ?.I don'thave any Meters.

3 Answers  

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why the value of impedence is taken as %impedence in fault currrent calculation

1 Answers  

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i have install 750 kva distribution transformer at my site and want to do neutral earthing. what calculations should i follow to determine earthing conductor material and size?

0 Answers   MTDC,

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How can Inductive load reduce the line voltage of HV transmission line and vice versa Capacitive load?

1 Answers  

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What will be the minimum megger value of 1700 KVA Transformer? a) Do megger value varies according to climate conditions and area . b) If megger value is 100 mega ohm is it good for new transfomer. Explain?

4 Answers  

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how can get electrical "c" licence.i am complited in DEEE.PASSING YEAR OF 2010 I AM WORKING IN SPENCER PLAZA ELECTRICAL MAINTENANCE ,I AM DIPLOMA COMPLEATED IN ANDHRA PRADESH AND WORKING OF TN PLEASE HELP ME

1 Answers  

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what is the use of 6.6kV/6.6kV Transformer???

3 Answers  

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