checklist of ELCB

Answer Posted / ram

1. switch on the elcb. press the test button on the elcb.
it should trip.
2. switch on the elcb. connect test lamp between earth and
output phase of the elcb. the elcb should trip.
if fails in both the condition the elcb is faulty.

Is This Answer Correct ?    33 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what is the use of the circle diagram

4750


does a DG set has low fault level as compared to that of a transformer.If yes then why.

1631


What type of core material is used for metering C.T and protection C.T???

1772


Where voltage are high and current to be interrupted is low the breaker preferred is:

1901


when we decide to use soft starter drive or vfd drive in mcc to operate apump?

1618






condition Autotrip facia come on control panel of electrical transmission line?

1185


If the line voltage is reduced to 75% of its rated value then by what percentage current will reduce ?? 75% 25% 50% no change and why ?

1859


1.25 kg of hydrogen are burnt with stiochiometric air, the mass of air in kg required is

1664


I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

1491


how we can calculate 2 phase welding transformer rating or total power?

1494


What is open delta Xformer? It's adavntages & Use?

1890


what is parellel power factor correction?

3599


What is the rating of circuit breaker needed for 300 KVA load in 33 KV supply line in a transformer of 33 KV / 415 Volt ?

1443


Explain what is electric traction?

774


which types of relay used in acb and vcb?

2401