We have a couple of oil tanks at our plant. One of them does not have a lightning arrester installed. My question is it necessary to install an arrestor on every tank or will this particular one be covered by the arrestor installed on the ajdacent tank, Since all the tanks are close to each other. Basically, I want to know that if these arrestors or protection works in a parituclar area of effect or influence. Thanks

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what is slip?

3 Answers  

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what is recovery voltage & transient voltage ?

1 Answers   Bhel,

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i have some screw comprressor with 630kw power,i have established them with simple star to delta circuit,by the way there is so much inertia when the screw comprressors start, can you offer me contactors power with 400vac or any cataluge to choose the contactors

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why transformers are put with supply for 24 hours before giving supplying to a locality?

2 Answers  

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What is the reason for low voltage in houses?

19 Answers   Maytas,

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What is Hot reserves and spinning reserves?

1 Answers  

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I am an American living in Vietnam and I have recently gotten a refrigerator from Japan and it is rated for 100 vac, but the power here is 220 so I bought a voltage stabilizer it has a 1 kva output rating. Can you please tell me what the amperage is? I'm confused and without a working fridge.

0 Answers   BSL,

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why is the transmission voltage is multiple of 11?

4 Answers  

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when the PFR (POWER FACTOR REGULATOR)change a step to zero,one of the RCCB will triped off,is it the changing step of this PFR effect the RCCB?

2 Answers  

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Why we use RYB phase sequence?

3 Answers  

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In batteries after completion of charging which colour gas is emitted from it?

2 Answers   Essar,

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