ct clamp

A current transformer (CT) is a type of transformer that reduces or multiplies alternating current (AC), producing a current in its secondary which is proportional to the current in its primary.
Current transformers, along with voltage or potential transformers, are instrument transformers, which scale the large values of voltage or current to small, standardized values that are easy to handle for measuring instruments and protective relays. Instrument transformers isolate measurement or protection circuits from the high voltage of the primary system. A current transformer presents a negligible load to the primary circuit.
Current transformers are the current-sensing units of the power system and are used at generating stations, electrical substations, and in industrial and commercial electric power distribution.

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  1. Jaygee

    EVSE installer complaints

    Guys I have had a Ohme Home Pro charger installed 3 years ago. I have had no problems with it. I recently had a solar installation survey done by octopus. The surveyor said that the CT clamp for the charger has been incorrectly installed. The CT clamp would measure the total electrical draw and...
  2. Giller

    Adding battery data to a Zappi with a second Harvi.

    Don't know if this is possible but I thought I'd ask the audience. So currently I have a Harvi which is linked to the Zappi and yesterday added another CT clamp to it to monitor the solar, was pretty straight forward and all is working well, however it can't take account of when the solar is...
  3. Technonotice

    CT connection over existing Cat5/6

    I had originally asked if it was possible to connect the EV charger to the CT clamp via an ethernet connection via switches - i.e. indirect. On investigation it turns out that some devices have that as an option, others don't so instead of asking the question, I will use this as an info post to...
  4. Bam Bam

    Anyone else have the Givenergy EVSE?

    Getting the Givenergy EVSE was one of my less good decisions. Never got to be compatible with Intelligent Octopus Go. Now it has got worse! Apparently the EVSE is entirely cloud controlled and so if Givenergy (currently in administration) goes offline owners won't be able to control our...
  5. W

    recommendations for CT cable

    Hello, I've already got an old pod point that im going to swap out. I already have a 100 amp fuse and 6mm cable so everything is good apart from the I don't have a CT cable. Rather than rip everything out and put a cable with a CT cable inside im thinking of just adding a CT . Do you have any...
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