|
|
楼主 |
发表于 2013-6-26 13:43
|
显示全部楼层
The LED module shall be switched on and the power monitored (at the input side) and& H# _! }, J; H7 ~4 |$ z" E, W
increased until 150 % of the rated voltage, current or power is reached. The voltage or the2 Z. C% ?, A) @6 C
current shall be increased until 150 % of the rated power is reached. The test shall be
3 x4 }$ o* V7 bcontinued until the LED module is thermally stabilised. A stable condition is reached, if the2 M" m4 L5 f5 V2 ]+ g
temperature does not change by more than 5 K in 1 h. The temperature shall be measured in
7 B8 F3 a- n8 g0 U. }) b: V. l; Ythe tc point. The LED module shall withstand the overpower condition for at least 15 min, the
5 b$ h! C* x5 U7 H. v9 u: } ^time period of which can lie within the stabilisation period if the temperature change is ≤ 5K., S, {( l, Q( y' K0 C: u( E# f
5 M& ^) |7 `5 R6 L% L1 f' g+ RIf the module contains an automatic protective device or circuit which limits the power, it is# e$ M/ b7 L6 x6 z4 u
subjected to a 15 min operation at this limit. If the device or circuit effectively limits the power
, O r8 ]) T1 {/ v3 n' {/ a. L9 hover this period, the module has passed the test, provided the compliance (4.1 and last
" i* {+ f. ~1 w/ B: _% D6 s, `# k5 }+ tparagraph of 13.2) is fulfilled.
8 b9 e; m* I' t. |! G( rAfter finalising the overpower mode, the module is operated under normal conditions until( V8 x- g+ |3 I" R. n- H: s& ^
thermally being stable.1 P" g$ L6 ?3 O& `9 k; F
A module fails safe if no fire, smoke or flammable gas is produced and if the 15 min1 ]$ U( B+ h. M3 D6 j3 p
overpower condition has been withstood. To check whether molten material might present a2 k% {0 Y1 e* S4 U! G0 {
safety hazard, a tissue paper, as specified in 4.187 of ISO 4046-4, spread below the module$ W D. ~3 z3 N& e" Z
shall not ignite. |
|
/1 
|关于安规|小黑屋|安规QQ群|Archiver|手机版|安规网
( 粤ICP13023453-10 ) 
窥视卡
雷达卡
发表于 2013-6-26 09:21
显身卡