Let me throw one more kink in the rope or rock in the soup, whatever. What if you don't do individual relay testing? What if you do system testing by playing simultaneous faults to both ends of the line? Any thoughts?
Let's see... how many contacts do we need to clean on microprocessor-based relays? How many times do we need to do maintenance on mp-based relaying? Don't get in the trap of relying on any one manufacturer. For high-voltage protection we use two mfgs. relays.
Standardization of your panels and...
Thanks for the replies. We have been meggering secondary CT & PT circuits during troubleshooting when the circuits are in-service for several years with no problems. It is not always possible to take the bus or breaker out of service to megg the circuit while you are hunting for a second ground...
What are the thoughts on megger testing in-service CT or PT secondary wiring? What precautions would you follow. Would it be done at all at your company? Thanks.
<br> I am not sure, but the <A HREF="http://www.batteriesplus.com" TARGET="_new">www.batteriesplus.com</A> website may<br>be of help to you.
<br> In reference to your question of how physics will affect <br>Electrical Engineers directly or indirectly?; I would like to add that the movement of electrons are tightly tied to<br>physics. The same electrons that power your home and auto<br>are collectively called current(I or amps)...