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
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?
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.
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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
Thank you for sharing your knowledge. Waiting for more Relay videos.
Thanks for video,I hope if you demonstrate a ITH relay (50gs)
We have IED-Intelligent Electronic Device. So the electromechanical relay is mostly for old existing system. Right?
CO electro-mechanical relays are still around. However, they are being phased out with IED relays, especially as stations become automated.
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?
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.