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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.
110075 kw motor take 45 amp in no load delta in star 10 amp but in load it will take 160 amp but IR velue of winding above 500 at 1kw ph to earth and ph to ph. what problem it should be?
3720Post New Electrical Engineering Questions
What is EHT tariff or Power factor Tariff ????
why we use Test Terminal Block in 11 KV and 33 KV electrical panels.
why and how current drawn by battery charger depends upon the altitude where it is located?
Define sensitivity?
What is the height of DA, DAL, DB, DC & DDE tower?
what is V.L.F. testing of power cable? do you know the voltage ratings, like for what rating and size of cable what rating of V.L.F. testing is used?
1- What is the Polarization Index number be good for 15KV 3c#500MCM electrical cable? 2- Can I use the IEEE Std 43-2000 to perfom the PI test? Thanks
what is meant by impedance & transient protection?
Can we indroduce the principle of single phase induction mator to Transformer? i.e. by Producing rotating flux in the transformer.
how mass curve differs from hydrograph.
what are the condition that makes hooter blow?
How to Make relay co ordination chart for a Electrical power distribution of a plant
What is difference between isolator and circuit breaker?
why can we use cosine wave instead of sine in ac supply as both have same rms vale and ripple factor
In our plant we have installed new MCC with ELR and CBCT which is detecting some leakage current in the system but it leading to some confusion when to check that in which feeder which is drawing current we put off the whole panel itself but still CBCT detecting some leakage current so can anybody ans me , where i am going wrong or how to detect whether its actual leakage or CBCT malfunctioning.
