jjlamshushushu 发表于 2013-10-31 11:06 # y% ?, z; j! W u, E7 l
产品多大?为何常温叠加?
" i1 J+ m1 C& x1 w产品也才20KW,问题是我们没有这么大的温箱啊. 4 k5 g+ [4 y. e0 \: @- Z要是那些500KW的是怎么测量的?作者: jjlamshushushu 时间: 2013-10-31 13:52
不需要温箱,相对封闭的室内就可以了作者: 清水白菜 时间: 2013-10-31 13:58
这个要看产品申请的环意温度,标准里是分大于50度和小于50度来进行,相关条款内容见如下:# K6 {2 S) I4 \: m4 J
- b5 Y3 q( [5 h- L
CL 4.3.2.1 of IEC 62109-1: / U4 o* k3 l/ W3 o# @3 ETests of equipment rated for use in ambient temperatures up to 50 °C may be conducted at ; F! u' N) g4 ^! W6 n) I7 i) t3 Qany ambient temperature in the range given in 4.2.2.1, in which case the difference between0 i( k3 S* i# H" v: N, C$ m
the maximum rated ambient temperature and the actual test ambient is to be subtracted from $ u4 ^* k! }4 W9 b* `or added to (as appropriate) the measured temperatures for comparison to the limits specified" O" K, Y# O: t( z# p
below. ; j/ M5 N$ Z% u* D$ UPCE rated for use in ambient temperatures more than 50 °C shall be tested at the maximum( x" A% c3 F0 w
rated ambient temperature ± 5 °C. The difference between the maximum rated ambient 0 U2 g d' K8 j2 O5 ytemperature and the test ambient is to be subtracted from or added to (as appropriate) the 4 `% O$ d- l' g$ I, W6 d9 n0 Imeasured temperatures for comparison to the limits specified below. * r& @0 M6 g. e4 A$ m! ]# q0 |+ Z1 s y f. w i
不过就算是申请的环意温度小于50度也一般会放在环温箱里测试,或者有可控温升房也行,因为逆变器基本上在申请的最高温度(如50度)下进行温升测试时会出现降额,而如果不用环温箱采用直接测试后加上去后的结果会严酷的多,大多都会Fail。作者: 清水白菜 时间: 2013-10-31 13:59
4.2.2.1 Environmental conditions ; t) j* u o. R# VUnless otherwise specified in this standard, for example with regard to environmental * m9 `1 X' I6 D% ]( q( ]category as defined in 6.1, the following ambient environmental conditions shall exist in the test location:7 `3 F8 n& f0 c3 }
a) temperature of 15 °C to 40 °C;* y( @, [6 ^8 D K
b) a relative humidity of not more than 75 % and not less than 5 %;/ K9 |" x8 }) }9 }/ z
c) an air pressure of 75 kPa to 106 kPa;0 Q+ _- N( r5 N/ g
d) no frost, dew, percolating water, rain, solar radiation, etc.作者: lanfeiyuner 时间: 2013-10-31 19:41 本帖最后由 lanfeiyuner 于 2013-10-31 19:42 编辑 ! {- g, p) [9 z- I. o, h- O
清水白菜 发表于 2013-10-31 13:58 # S6 D4 g' B3 s. M1 y
这个要看产品申请的环意温度,标准里是分大于50度和小于50度来进行,相关条款内容见如下: 3 @/ N! I2 ?1 x2 v / D( n6 ^' T: n$ M2 b" TCL 4.3.2.1 o ...