Answer / ibrahim+8801671121852

lighting arrester is used mainly for balancing the voltages
of any building. when lit comes from the sky the voltages of
any houses is rises. to aviod this rising voltage we used
lighting arrester. but if it passed 3.3kv it doesn't work.
or it would be burned.

why we used ZNO in Lightning arrester.

0 Answers  

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Send the control circuit digram of a star delta stater?

1 Answers   L&T,

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I have a 25kVA three phase transformer on our property. Will this transformer be large enough to run a large home with swimming pool, spa, 2 off full size reverse cycle air conditioners to service a 100 square house (10,000 square feet or 930 square metres)and the general power consumption of this house without upgrading to a 63kVA transformer.

1 Answers  

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how to check the insulation for motor using megger?

2 Answers   GSK,

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what is the potential difference between line and earth?

11 Answers  

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What will happen when more than one star neutral points at same voltage level are connected to earth by metallic conductor?

1 Answers   TCS,

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in the thermal power plant, why we use the condenser (for cooling the steam) when we have to heat the steam again. i mean why we are cooling the steam,

6 Answers  

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reason of capacitor failure or low voltage in alternator wtih 10kva dgset

0 Answers   adag,

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How to select the rating of a CT used for REF protection. The rating can be of equal rating of Phase current or neutral current rating

2 Answers   UltraTech,

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why multiplying factor is used in wattmeter???

1 Answers   Nippon,

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what is the difference between 2phase & 3 phase?

1 Answers   NTPC,

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What is the safe limit of voltage between earth and neutral in india.

2 Answers   Incepta Pharmaceuticals,

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