After you got the trip time, how do you know if it's within tolerance? Is there a calculator to determine the trip time based on the tap and time dial?
@jerredblunt1112
3 ай бұрын
Settings for the relay are calculated by protection engineers. You might sometimes hear it referred to as the "money shot". It is the time to trip at a given current magnitude (i.e. 1.2 sec @ 8 amps secondary). This would mean if 8 amps of current were going through the relay, we would want the trip contacts to close in 1.2 seconds. We would adjust the time dial to get that as close as possible.
@soe2152
4 ай бұрын
Thank you for sharing your knowledge. Waiting for more Relay videos.
@NeilRogerson-jj7fw
9 ай бұрын
Love the video of the substation
@abdulrrahmanmesaad1365
11 ай бұрын
Thank you very much for the useful video, We have CO relays testing and calibration in site these days and this was very beneficial to understand the operation and terminals wiring. Appreciated
@tigerk.571
11 ай бұрын
We have IED-Intelligent Electronic Device. So the electromechanical relay is mostly for old existing system. Right?
@jerredblunt1112
11 ай бұрын
CO electro-mechanical relays are still around. However, they are being phased out with IED relays, especially as stations become automated.
@skabbymuff111
Жыл бұрын
Really enjoyed this video. Very informative, thanks for making it.
@linuxbrad
2 жыл бұрын
How does a sensor (or what type of sensor) detects the direction of current flow? Thank you!
@jerredblunt1112
2 жыл бұрын
Good question. In order to determine direction of current flow, you actually need two "sensors". A CT will produce a secondary current based on primary current and the CT ratio. A PT (line pot, bus pot, etc) produces a secondary voltage based on the primary voltage of the line or bus. Potentials are used as the reference and the direction of the current is based on its phase angle as compared to the voltage angle. This is very important as this is how billing meters and directional-based protection elements are governed.
@engineeringtechnologies9570
2 жыл бұрын
Do you have a switching operations manual
@KyleRichter23
2 жыл бұрын
Love the video, just subscribed. Love the high quality, it may look even less shaky if you film and upload in 4K 60 fps (frames per second). You can go into your phone’s camera settings and crank it up there. Again, great video!
@rxblmao1167
2 жыл бұрын
Very interesting, I’m a first year apprentice and this video was very helpful as I find high voltage fascinating 👍
@jerredblunt1112
2 жыл бұрын
Glad the video was useful for you!
@Chucker973
2 жыл бұрын
What are the batteries for?
@jerredblunt1112
2 жыл бұрын
Station DC. Most important thing that the DC is used for is operating the breaker trip and close coils. It is used for many other things as well, but tripping breakers is the most important thing.
@Chucker973
2 жыл бұрын
10/4, I understand, I’m a maintenance foreman @ a underground mines, we have a similar device called CTD capacitor trip device, it’s a charged capacitor that uses a shunt trip coil to trip the breaker if there is a line fault which would cause the control power to be to low to trip it, thanks much for the video, I’ve always been amazed by high voltage, but it must be respected!
@Chucker973
2 жыл бұрын
Great job!
@davidgray8214
2 жыл бұрын
Great walkthrough! Thank you.
@sidahmedbensaad1838
2 жыл бұрын
Thanks for video,I hope if you demonstrate a ITH relay (50gs)
@erwinsummer9961
2 жыл бұрын
Love the tour. Learnt a lot. Thanks!
@geeda35
2 жыл бұрын
This is great. Thank you! Post more videos when you get a chance. This was very informative
@rayhopkins1208
2 жыл бұрын
Thank you for the very informative tour. Showed it to my current Level 3 Electrical Apprenticeship class in BC Canada. Students saw a number of items that were in their binders and you were able to add substance with your explanations. They all agreed, well done Jerred.
@jerredblunt1112
2 жыл бұрын
Thanks for commenting! I'm glad your class could get something out of it!
@joseine2
2 жыл бұрын
Jerred, I was not that bad. It was great. Thanks for posting the video. It will be useful to show a 66-12kV substation
@morejelloplease
3 жыл бұрын
can you show us a TWACS outgoing modulation transformer and tell us about it? i just posted a video of my smart meter making noise. i had 5 guys over here and they changed the twacs meter for an old school RF 450MHz meter and so far i'm not hearing that silly buzz anymore. it was making a bunch of electronic devices in my house hum for about 7 seconds.
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