How to install Current Transformer Metering for a 630A supply - Commercial Day Hospital

Basic rundown of how to install a CT test block, meter panel and the termination of a multicore cable in the CT chamber of a 630A Main switch board.
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[@jed2055]

Walking into a substation yard with all the humming trannies towering above and overhead busbars was scary enough but indoors and noisy CTs, twitching dials and fluctuating digital readouts always filled me with awe and I guess a certain level of fear.
And that's exactly the way one should be when about to work on this stuff. So bloody deadly for the unwary.

[@AbdulSamadGUJJAR]

Thanks for the video mate

[@frosty-lb1bt]

Quality info mate. 👌

[@flightlieutenant6902]

A must for all apprentices. Great lesson to learn. Cheers mate 👍🇦🇺🇦🇺🇦🇺🇦🇺🇦🇺🇦🇺

[@electricalservicesmaroc]

Yesm mate

[@CoastLineBoarders]

What happens if you wire the coils reverse?

[@Marco_Sparko]

The meter will see reverse current flow on that particular phase. You need corresponding polarity with the primary and secondary. If the CTs are mounted backwards (happens a lot with HV metering) you just reverse the polarity (at the meter terminations usually) to correct it. Remembering to label that you have corrected the polarity makes a life a LOT easier for the next meter tech who attends for the 5 yearly site inspection/meter test and/or replacement :)

[@danielelise7348]

And I think I just cheated on my girlfriend, watching this,better change me strides now!🤣❤️🎇⚡🔌❤️

[@WillmannElectrical]

😂