15-00007A (CA-806) is specified for up to 2kV, so 4kV cannot be applied.

Doing so may damage the equipment; please exercise caution.

However, because the coupling ratio is 1/10, a 4kV setting is expected to result in 400V coupling.

To couple 400V, set the tester to 2kV and wind the wire twice around 15-00007A (CA-806) . This enables coupling equivalent to 400V.

However, please note that the applied waveform will be distorted.

We do not offer an inductive (magnetic-field) coupling clamp capable of 4kV coupling.