Question

To what surge voltage (core to earth) is the basic immunity of bus devices tested (IEC 63044-3)?

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Answer

B — 2 kV.

Correct: basic immunity is tested with a 2 kV surge core to earth.

All proposed choices (exam context)
  1. A.4 kV.
  2. B.2 kV.✓
  3. C.600 V.
  4. D.350 V.
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