Very informative. I have a question for you Sir. Last week we were performing tests on 11kV Switchgear on a substation. We first tested insulation resistance on the 150mm² Paper Cable and learned that two phases, Red & Blue have become in contact with each other. All of the phases were not in contact with EARTH. Having these readings from the megger we concluded that the cable is faulty and had to Thumped to locate the fault. We did exactly that, but the Thumper did not do as expected, it was not giving signs that the cable is faulty. We then tested by VLF and the cable passed all the tests. After these tests we discussed this and decided to energize the cable since it has passed the other tests apart from the megger's. We energized it but without giving it a load and it did not cause any problems. My fear is, when the time comes for this cable to feed a load there is going to be a problem, because when we were testing using VLF there was a " shhhhhhhh" sound on the back of the panel right at the termination of the cable like a gas was leaking. In your opinion do you think the cable was faulty or the problem is on the termination (GAS). Or do you think the cable is fine and will be even when supplying a load? Thank You.
Dead tank circuit breakers 245 kV and higher are far from dead. They generate very high and unpleasant E-fields in their vicinity. Not recommended to come too close to their bushings
Very informative. I have a question for you Sir. Last week we were performing tests on 11kV Switchgear on a substation. We first tested insulation resistance on the 150mm² Paper Cable and learned that two phases, Red & Blue have become in contact with each other. All of the phases were not in contact with EARTH. Having these readings from the megger we concluded that the cable is faulty and had to Thumped to locate the fault. We did exactly that, but the Thumper did not do as expected, it was not giving signs that the cable is faulty. We then tested by VLF and the cable passed all the tests. After these tests we discussed this and decided to energize the cable since it has passed the other tests apart from the megger's. We energized it but without giving it a load and it did not cause any problems. My fear is, when the time comes for this cable to feed a load there is going to be a problem, because when we were testing using VLF there was a " shhhhhhhh" sound on the back of the panel right at the termination of the cable like a gas was leaking. In your opinion do you think the cable was faulty or the problem is on the termination (GAS). Or do you think the cable is fine and will be even when supplying a load? Thank You.
this is the best channel.thanks a lotttt......every video is just outstanding
Gaurav this is the blockbuster video of understanding the concept of CT secondary current ❤❤❤❤
Helpful Thank you for these videos They have encouraged me to open my books at home
Im knocking the dust off
Great!! Very happy to know that! All the best!
Hi Sir,
The video is very informative.
We can also classify Circuit Breaker as below 👇
MCB,MCCB,MPCB,RCCB,VCB
Thank you sir
Ya its was amazing
You are helping me to understand very easily.Please make videos about alternators.Thanks in advance
Glad it was helpful 😊
Very good tutorial.
Glad you liked it!
thanks
You're welcome!
Good
Sir can you make video on end equation of an alternator
Very informative. I have a question for you Sir. Last week we were performing tests on 11kV Switchgear on a substation. We first tested insulation resistance on the 150mm² Paper Cable and learned that two phases, Red & Blue have become in contact with each other. All of the phases were not in contact with EARTH.
Having these readings from the megger we concluded that the cable is faulty and had to Thumped to locate the fault. We did exactly that, but the Thumper did not do as expected, it was not giving signs that the cable is faulty. We then tested by VLF and the cable passed all the tests. After these tests we discussed this and decided to energize the cable since it has passed the other tests apart from the megger's. We energized it but without giving it a load and it did not cause any problems.
My fear is, when the time comes for this cable to feed a load there is going to be a problem, because when we were testing using VLF there was a " shhhhhhhh" sound on the back of the panel right at the termination of the cable like a gas was leaking.
In your opinion do you think the cable was faulty or the problem is on the termination (GAS). Or do you think the cable is fine and will be even when supplying a load?
Thank You.
Dead tank circuit breakers 245 kV and higher are far from dead. They generate very high and unpleasant E-fields in their vicinity. Not recommended to come too close to their bushings
Webinar link ??
courses.theelectricalguy.in
First view
Very informative 👏 👌
Thanks a lot
Very informative. I have a question for you Sir. Last week we were performing tests on 11kV Switchgear on a substation. We first tested insulation resistance on the 150mm² Paper Cable and learned that two phases, Red & Blue have become in contact with each other. All of the phases were not in contact with EARTH.
Having these readings from the megger we concluded that the cable is faulty and had to Thumped to locate the fault. We did exactly that, but the Thumper did not do as expected, it was not giving signs that the cable is faulty. We then tested by VLF and the cable passed all the tests. After these tests we discussed this and decided to energize the cable since it has passed the other tests apart from the megger's. We energized it but without giving it a load and it did not cause any problems.
My fear is, when the time comes for this cable to feed a load there is going to be a problem, because when we were testing using VLF there was a " shhhhhhhh" sound on the back of the panel right at the termination of the cable like a gas was leaking.
In your opinion do you think the cable was faulty or the problem is on the termination (GAS). Or do you think the cable is fine and will be even when supplying a load?
Thank You.