Question
What minimum nominal discharge current (and impulse shape) must the secondary overvoltage protector provide?
Answer
B — At least 5 kA (8/20 us).
Correct: the overvoltage protector must provide at least 5 kA (8/20 us).
Source
KNX Basic Course Documentation — 16 — p. 116
All proposed choices (exam context)
- A.At least 2,5 kA (10/350 us).
- B.At least 5 kA (8/20 us).✓
- C.At least 12,5 kA (10/350 us).
- D.At least 350 A (8/20 us).
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