标题: IEC60730.1标准中爬电距离 材料类别和污染等级 [打印本页] 作者: yiming_san 时间: 2018-12-7 16:51 标题: IEC60730.1标准中爬电距离 材料类别和污染等级 请问IEC60730.1标准中爬电距离测量，其材料类别和污染等级怎么确定呢？有什么标准详细分类了吗？谢谢。作者: H-RH 时间: 2018-12-7 18:08
污染等级参考这个: ) G! `4 s* [# o4 q5 k8 E7 b: A' F5 e7 R- B( } https://www.myomron.com/index.php?action=kb&article=513 # B) `- p; n' z n$ O* v6 j+ y0 K a# W2 W
Pollution Degree 1 : No pollution or only dry non-conductive pollution. It has no effect. Clean room environments, Inside sealed components , ?% J4 ^. t6 Q/ q- z- r3 v/ L# @8 G& v+ I
Pollution Degree 2: Normally only non-conductive pollution. Temporary Condensation possible. Offices, laboratories, test stations" i- ?% u$ ?1 G9 Q
1 n& T+ U3 L# nPollution Degree 3: Conductive and non-conductive pollution present. Condensation frequent. Industrial & farming areas (under cover), unheated rooms, Boiler rooms 9 I/ _9 D7 W- |9 P, S9 y7 i+ l b$ h/ K* Y: _/ D
Pollution Degree 4: Pollution generates persistent conductivity caused by wet dust, rain or snow. Outdoor use, remote stations " N* n1 U1 s' n2 K0 q/ C5 a1 P# o4 f7 E7 {4 X
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材料类别 (Material group) 在 6.13:" E* a4 [: t$ G. h: @
6.13.1 – material of material group IIIb with a PTI of 100 and up to but excluding 175;) Y2 Y# a, a) i
6.13.2 – material of material group IIIa with a PTI of 175 and up to but excluding 400; & \7 S- b( \6 Y0 _/ x8 z' `6.13.3 – material of material group II with a PTI of 400 and up to but excluding 600;% J9 O. |! }: A( n4 e$ j
6.13.4 – material of material group I with a PTI of 600 and over.& m. B- o+ H4 Z+ L$ N0 i4 `