Why don't we provide SURGE ARRESTORS for Transformer
feeders?

Answer Posted / dinesh (techie.dinesh@gmail.co

instead of surge arresters, "CONDENSER RINGS" are used.

This first turn of the HV winding is the "condenser ring".
it is connected to the HV lead( along the terminals of hv
winding).

whenever lightning or surge occurs, they are neutralized in
the condenser ring itself, without damaging the windings

Is This Answer Correct ?    1 Yes 3 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what is buffer resistance starter.?.What is the working principle and where it is used..?

1565


Dear all, I want to use Induction motor to open and close a 1 ton door. How much power do I need. Thanks

1409


How to work definite,over pluxing,revers power,OSR relay

1250


why we use two slope(differential & restraining) in differential relay.but in busbar protection differential we are using only one slope?please explain

1729


Let me know that how i calculate the alternator sub tranciant reactance and tranciant reactance.

2098






We have drive feeding an output contactor for a 5000 hp motor @ 5kV application. The motor FLA is 629amps x 1.25% service factor = 786.25 amps The cable that we current have in place between the drive and the output contactor is 350kcmil- MV-105 (parallel cables). Per the NEC table 310.60 (C) (69). This show the cable ampacity is at 615 amps per cable for a rating of 1230 amps. We have derated the cable for the cable tray and the multiple cables application and our calculations show that after the correction factor factor we are at 922amps. 1230 amps x .75% correction factor factor = 922.5 amps. The customer is driving us to then use another safety factor of .25% off of the already derated cable. Can you please provide a longhand calculation for your solution on this application?

1667


how we calculate torque ? how we improve it ?where torque will either motor or generator ?

1572


tell me about roaster switch .& what is the function in transmission & distribution?

2171


why are u join ntpc

1728


what is LSR?

1717


what is meant by LCR meter? where its useful ?

1578


What happen to the transformer if the OLTC frequently used for lower and raise occured 50times daily?

1589


How you calculating the 30 Hp 3 phase AC motor of power what size of cable is used for this motor?

1155


What is a single phase autotransformer?

641


if grounding is notdone at regular intervals for long distance transmission, will the load connected at distribution end receive voltage during negativehalf cycle of the sine wave?

1551