how could we findout the lightning arrester failed or not in
live circuit? Is there any instrument to measure the high
voltage at the time of sky lighting?
- 1 Answers
- 3263 Views
- I also Faced
- E-Mail Answers
Answer Posted / k.prakashchandra
If the L.A. is intact ,you have to assume that it in working
condition.There is no need to test it with high voltage ,as
it is already subjected to working voltage .Only physical
examination may help you.In case of E.H.T,LA ,it is usually
provided with stay-put pointer ammeter to measure leakage
current.You have to replace the L.A. when the pointer enters
the red region.
| Is This Answer Correct ? | 0 Yes | 1 No |
Post New Answer View All Answers
Why frequency changes due to load variation in power system ? i.e why when load increases frequency decreases?
WHAT ARE THE CHARACTERISTICS OF AN VOLTAG AMPLIFIER
list of tests to be carried out at manufacturers end while purchasing a step up transformer of 11kv to 66kv ,2MVa Capacity.
If a transformer primary winding operates at 240v, the secondary at 120v and the load is 1500w & the transformer is rated at 92% efficient, what's the current flowing through the primary winding of the transformer? What is the formula for finding this?
Define resonant frequency?
Why wind turbines wheels rotate constantly
prove that power consumed in 3 phase delta system is 3 times as compared to 3 phase star system
Explain how to determine capacitor tolerance codes?
how many joint can done in HT line and what is life of the joint
what is the purpose of slope in the differential relay?why we are using two slope?but in busbar differential we are using only one slope.why?
hello!my name is sheikh iam preparing for indian engineering servieces,please send me the old question papers..to sheikhshaazforjobs@gmail.com
What is a diode?
What is mean by hot and cold loop testing?
why we used ZNO in Lightning arrester.
why the perameters of secondary circuit are more important then that of the primary circuit of induction motor?
