Megger DET2/2 meas.inst.

[Muska]

Пожалуйста, помогите перевести след. словосочетания:
"test spikes", "current spike", "potential spike", "current test spike"

контекст: "Theoretically, both the Current and Potential spikes should be at an infinite distance from the earth electrode.
"Thу four test spikes are then re-positioned for further tests along a different line"

[Enote]

spike - щуп / измерительный зажим

[Muska]

Спасибо.