L.A. (Lightening Arrester) is located at a place from where transmission line enters the transmitting substation. So L.A. (Lightening Arrester) is the first equipments which has to encounter with lightening, high voltage surges and switching surges. It has to absorb energy of lightening, high voltage surges, and switching surges. L.A. (Lightening Arrester) is made up of layers of semiconductors. If these layers can not tolerate energy released by lightening, high voltage surges, and switching surges the L.A. (Lightening Arrester) blasts.

0 Answers  

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IN Electric train which type of motor is used,for what reason they uses?

3 Answers   L&T,

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how tubelight circuit is connected and how it works?

7 Answers   Punj Lloyd Ltd,

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If the damper winding on the rotor of a synchronous motor is removed after starting what will happen?

7 Answers   IOCL,

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as we see that in our country the power rating for transmission is always rated in multiple of 11 like 11kv,33kv,66kv132kv. So i want to know wht is reason or logic here.

2 Answers  

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Basic laws governing motor and generator

2 Answers  

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what is meant by Hrc fuses.?In the distribution system different rating hrc fuses are used for tranformer(which is 3k,6k,10k,15k etc).what is k?.plz any brother tell me about k?

1 Answers  

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How will you define capacitance?

0 Answers  

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why commutator are not used in rectification purpose in power electronics?

1 Answers  

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How would you calculate power loss in a resistor?

0 Answers  

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Why servomotor and induction motor are in different shape

1 Answers  

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what is the effect of leading power factor

3 Answers   Aurobindo, R L Steels and Energy,

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