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functional accuracy


spenceriles

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spenceriles

hi guys

could you help with this one how would you check the functional accuracy of an insulation resistance tester

and why is a low value of resistance needed when carring out a cpc test

thanks spenc

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Andy™

1: calibration. can be done by using resistors of known values. or a pre made check box (avail on this forum)

2: R2 needs to be as low as possible to allow fuse/mcb to operate

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Spence

as andy said you can purchase check box most people sell them RS etc or test from a known source.

In answer to your second question why you need a low value resistance is you will be reading as low as 0.05 ohms

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