In your gis switchboard video you use HVAC kit and here hvdc.which one is better and why.and how much leakge current acceptable for gis 66kv cable.please answer
Why when we use AC hipot testing , we get high capacitance? And why high leakage current for high capacitance ? And also explain the how low distance between cables reasons high capacitance
On DC only charging capacitance current take place but for AC charging and discharging also take place additionally inductance also take place in AC so generally leakage current is high when we compare to DC
Very good. Thanks 🙏
Thank you too!
Sir do you know Leakage current formula ?
not having i will check for you
Please tell me acceptable limits of leakage current
How much leakage current is acceptable limit and after hipot IR value result is compare to Before IR is more or less?
In your gis switchboard video you use HVAC kit and here hvdc.which one is better and why.and how much leakge current acceptable for gis 66kv cable.please answer
for cable HVDC is better , and for leakge current not have any fixed value. need to ref. FAT
Why when we use AC hipot testing , we get high capacitance? And why high leakage current for high capacitance ? And also explain the how low distance between cables reasons high capacitance
On DC only charging capacitance current take place but for AC charging and discharging also take place additionally inductance also take place in AC so generally leakage current is high when we compare to DC
Sir can u explain about farrent effect
yes i will make for you.
Thanku sir
Sir Ferranti effect is not suitable for short transmission line... Then how do you tell???
Mr . I'm new employe at power plant , I do commissioining with tools dc hipot test , why voltage is (-)/min .?
i am not able to understand
Why is it negative?
Sir, why IR test is done before and after cable Hi-pot test ??
to verify Cable not have any damage before hipot test and after hipot test it should be check it is not damage during hipot
What are the tests for mv cable? How many tests? Can you explain.
Tell me the procedure of sheath test
For hipot test ac or dc voltage best?
For cable only AC shall be used that too VLF (Very low frequency). DC is not recommended. Olden days we were using DC, but not now.
@@sabumtsabu i think you are saying opposit,DC recommended for Cable and AC for the bus bar
@@djamelbek7506 No, DC hipot on cable is considered destructive as it will increase treeing effect on cables.
If you have to do 11kv cable means what is current range you will select in the hipot kit sir... Same as 33kv??
It needs to be done at the equivalent of Peak AC Voltage.
What is the purpose of ✓2 in formula while testing the cable using DC
@@baranitech thanks bro unga mail id
@@baranitech Bro mail id invalid nu varuthu
@@baranitech ok bro thanks
What is meant by LRF test on cable
Kindly explain in tamil
Worst video i ever seen
thank you very much