why the undervoltage relay's interlock is used in
earthswitch closing operation of the 400kV line scheme?









Answer Posted / k.prakashchandra

So that the earth switch can not be closed with supply

Is This Answer Correct ?    1 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

define as synchronous generator

1682


When semiconductor fuse does save thyristor in each cycle of conduction? Why under voltage setting keep less in SPRS and more in DC drive?

1625


We are preparing another project which involves Waste heat recovery from a 1 MW GE Engine. The Engine in particular gives out flue gas at 487Deg C with a flow rate of 5650 kg/hour and this can be cooled to 180 Deg C. This gives a thermal output of ~ 594 KW that is available for input to VAM via heat exchanger / boiler. Additionally 581 KW will be available from engine jacket water (temperature profile 80/ 80 Deg C and a flow rate of 50m3/hr) Our estimation is that 300 TR of cooling is possible with a suitable VAM machine(s). Please advise what is the most suitable arrangement with maximum TR and min Capital expenditure. plz reply me as early as possible

1490


What is resistance of 50meters, 16sq.mm, single core copper cable?

1435


What is BusBar integrity test and how it is conducted?

1558






Explain what is electric traction? Explain few advantages of electric traction system?

594


WHY DO VOLTAGE TRANSFORMERS FAIL DURING EARTH FAULT IN THE DELTA CONNECTED 6.6KV ELECTRICAL SYSTEM

1534


How many size of cable required for a 300m long and 30kw inductive lode

895


What is the phase relationship between the primary and secondary voltages of a transformer?

585


What are dependent sources?

652


hi frnds what is meant by harmonics & what is meant by third hormonics,where its will occur ?thank u

1515


why using transformer and thyristor switch in 3 phase apfc panel

2369


where is the need for short circuit test for 3 see is required and why? can you explain in brief with application

1397


What is steady state response?

662


1.why we are using blocks in withoutgaplightning arrester 2.why we ar using bushing in withoutgap lightning arrestor

1543