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本帖最后由 孟云房 于 2012-10-2 00:16 编辑
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3 t$ f- H. @5 o! K0 \: p标准注中明确指出:试验与IEC 60529不等同;
/ a7 s6 H3 r2 F* |2 X同时对试验后的判据也发生了改变。! b+ ]8 o7 k6 b& C" A! a
对防尘2,探棒不能触及带电部件;对防尘3和4,对不带排水孔的灯具,探针不能进入灯具;对带排水孔的灯具,探针可以进入灯具,但不能碰到带电部件。7 T. r, @4 L/ c' o
另外,象对家电产品,圆排水孔直径都要不小于5mm的,否则都不叫排水孔,2.5和1mm探针肯定能进去的,道理类似。
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NOTE 1 The tests for the ingress of dust, solid objects and moisture specified in this standard are not all identical to the tests in IEC 60529 because of the technical characteristics of luminaires. An explanation of the IP numbering system is given in Annex J., E# u- C& T) P" @9 I
f) no contact permitted with live parts by the relevant test probe for first characteristic
/ H; f: D M7 \. `/ ?+ aIP numeral 2;+ m J/ S \6 R$ `3 {+ V4 @ c" ~. k
no entry into the luminaire enclosure by the relevant test probe for first characteristic
) o0 }3 h) T( q' T) X8 |9 AIP numerals 3 and 4.
- E' v' J" J3 i8 Z8 \7 V) lFor luminaires with drain holes in accordance with 4.17 and luminaires with ventilation slots: h# V2 ~! Y6 C+ {- A4 p
for forced cooling, no contact with live parts is permitted through the drain holes and1 W! k8 w% [$ f8 G# ?* B
ventilation slots with the relevant test probe for the first characteristic IP numerals 3 and 4; |
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