|
关于耐久测试,标准
0 X. a6 D( l; v. ~3 j* ?- If a thermal protective device operates during the first six cycles the test shall be modified as follows:! R$ E8 I0 x9 b
1) For luminiares with cyclic protective devices, the luminaire shall be allowed to cool until the device resets. For luminaires with one-shot thermal protective devices (thermal links), the device shall be replaced.6 }8 u* p- h7 s4 O* R/ @$ p2 Q
2) For all kinds of luminaires the test shall then be continued up to 240 h in total wiht the circuit and the temperature adjusted in such a way that the protective device just fails to operate. The luminaire is deemed to have failed the test if adjustment below the luminaires rated characteristics is necessary to prevent the protective device operating. | O. @; W- M/ r3 l9 W2 t
疑问:4 w9 X+ ~+ ]: T7 v0 W
1 在热保护器动作后,需要调节电路和温度来达到使热保护器刚好不动作,既然调节时灯具的额定参数不能降低,那么,如何调节电路和温度来达到使热保护器刚好不动作呢?. l% q" _" r7 R2 l7 ]
2 持续地做完240 h试验后,还需要做24 h的非正常试验吗?(即标准上所述第7个周期)
+ m6 N! j& r$ N8 R. i
" P* u/ c) D9 q; Z# x" ]8 Q- If a thermal protective device operates during the seventh (abnormal conditions) cycle it shall either be allowed to cool, or , in the case of a one-shot device, it shall be replaced, and the test continued with the circuit and temperature adjusted in such a way that the protective device just fails to operate.+ d& E5 T5 l. N" n3 I
疑问:
% Z0 _ w' L3 G. e( ],1。在这个24小时(标准上所述第7个周期)的非正常试验,需要做哪些非正常试验呢?是与clause 12.5.1所列的非正常试验是一样的吗?如果那些非正常测试的时间加起来超过24h呢?1 H" ?0 W2 Q. a+ u3 H" ]+ |, Z
2,1 在热保护器动作后,需要调节电路和温度来达到使热保护器刚好不动作,既然调节时灯具的额定参数不能降低,那么,如何调节电路和温度来达到使热保护器刚好不动作呢? |
|