Type 28 Three Channel AC Current Clamp (V1 V2 Differences)


We have several of the Type 28 Three Channel AC Current Clamps, some are the V1 variety, and some are the V2 Variety.

I am 99% sure we should just use V1 Clamps with V1 Units, and then V2 Clamps with V2 units.

Is this correct, or is there any overlap with using V1 clamps on V2 units or vice versa.

No need to go in depth explanation, if a ‘just use v2 on v2, v1 on v1’ is the answer.

Thank you!

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V1 Clamps must be used with V1 boxes and vice-versa. You cannot mix them or it will not work.

this is the answer
background –

  1. V1 board and V1 CT – There is a burden resistor on the board and no burden resistor in CT. Each CT type has its own burden resistor value. This means we have to build a unique board type for each CT type
  2. V2 board and V2 CT – no burden resistor on board and burden resistor in CT. This means we have to build only one kind of box and connect any CT range, and it will work

On your side, you can connect 200Amp V2 CT in a V2 box which was earlier used with 600Amp CT. The only thing you will need to do is change the calibration value.