why we use 25 kv in railway .not 11kv, or 33 kv

2 Answers   ISRO,

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i have been tasked with a design of protection, metering and control(PMC) relay panel extension to accommodate all PMC relays.There is an already existing panel where this one will be built.What are the design aspects for this kind of project? thank you.

0 Answers  

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how to find the transformer effiiency

3 Answers   Bosch,

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what is the difference between electrical choke and electronic choke?

0 Answers  

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-What shall be short circuit current of LV switchgear for a 1000 kva, 11.415kv, 3 phase tranformer with 5% reactance.

0 Answers  

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State Maximum Power Transfer theorem.

0 Answers   ABB,

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What fomula is used to calculate: 1. rated frequency withstand voltage, and 2. rated lightning impulse withstand voltage.

0 Answers   PNG Power,

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what is synchronizing panel & its working.

3 Answers  

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What is an iron loss or core loss pi?

0 Answers  

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If a HV Underground Cable (13.8KV) is layed in the ground below 1.5 Mtrs and any building construction is done on the Cable route. IS this allowable or Not? What should be the clearance. As per ISO construction on HV cable route is safe or Not? Why? Can any body suggest the site for my question?

1 Answers   ZCL,

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What is the method & formula of Fault level calculation in power Transformesr.

3 Answers  

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.if the vector group of two transformers is not same n tey r connected in parallel operation then what will happen?

2 Answers   ABB,

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