请问IEC61347－2－1中15&16条是什么意思？

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IEC60335试验指甲

15 &16 Protection of associated components & Abnormal operation
  K* g( X8 }/ r1 q
The ballast shall not impair safety when operated under abnormal conditions at any voltage between 90 % and 110 % of the rated supply voltage.
1 x- H* U  r8 U0 l! ^
9 v6 O& q2 L# U/ m) pDuration: 1h
; [4 X4 @$ `7 Y  L0 T" |
2 x; J% w* `! m  z" I) z" D% S. n
8 p1 W+ `3 Y0 c7 m6 O


15.1 verified with dummy cathode resistors inserted and conditions of abnormal operation
- M. ]' s( V# ]+ b7 G* D! u) P
3 N' [) B) G5 Z. Q5 U15.2 conditions of abnormal operation, measured  from 5 s after the switch on or beginning of the starting process
( M+ g9 q& Z" [3 x
15.3 For a period longer than 30 s after switch-on, or beginning of the starting process. For ballasts which make more than one attempt to start a failed lamp, the combined duration of voltages above the maximum working voltage for which the ballast is declared shall not exceed 30 s.

   

c) the lamp does not start although the cathode circuits are intact (de-activated lamp);