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3.5.9 4 ?2 s# U4 Q. i" V* X }+ ~
NORMAL CONDITION% ^6 E& v' t8 A5 w+ A4 t
condition in which all means for protection against HAZARDS are intact
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SINGLE FAULT CONDITION
- O3 k! E, O0 mcondition in which one means for protection against HAZARD is defective or one fault is present
r$ k S) P. H' W& z1 ]3 u& J3 v- x/ |; awhich could cause a HAZARD
/ Q C0 D: ^, O s9 X* B% b' ~ M/ aNOTE If a SINGLE FAULT CONDITION results unavoidably in one or more other fault conditions, all the failures are 8 K& b8 l( n, C% c L$ e
considered as one SINGLE FAULT CONDITION [IEC Guide 104].
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