zjjpretty 发表于 2010-9-8 16:59

60950标准提问

(1)IT配电系统是不是都N.A,我们一般使用的都是TN的配电系统吗?
(2)950标准里的
1.6.4
Neutral conductor
怎么判定有没有呢?除了零,火线,一般设备都不具备中线吧?
(3)什么是PROTECT BODING, 电源板上接地线的PIN脚算不算啊?

非常感谢各位的回答!

zjjpretty 发表于 2010-9-8 17:18

各位帮个忙呗,小弟刚从事安规俩月

fjapple 发表于 2010-9-8 17:19

基本上测试实验室里的都是TN系统啦,Neutral conductor就是零线的意思呀,哥们。PROTECT BODING是指AC inlet 的地pin接到外壳上的那根绿黄线

zjjpretty 发表于 2010-9-8 17:35

引用第2楼fjapple于2010-09-08 17:19发表的:
基本上测试实验室里的都是TN系统啦,Neutral conductor就是零线的意思呀,哥们。PROTECT BODING是指AC inlet 的地pin接到外壳上的那根绿黄线

大侠你做过的产品中IT系统有P的没有啊?

另外1.6.4 Neutral conductor
The neutral conductor, if any, shall be insulated from earth and from the BODY throughout the
equipment as if it were a line conductor. Components connected between neutral and earth
shall be rated for the line-to-neutral voltage

如果是零线的话,报告里怎么判定,我们这地线和零线是接在一起的

还有bonding处没有保护地symbol的算不算过啊?

猛龙不过江 发表于 2010-9-8 17:42

基本上都是TN 系统

豆浆油条 发表于 2010-9-9 08:43

中国是TN 系统

一路前行 发表于 2010-9-9 13:16

是TN系统,我们实验室零线和地线是连接在一起的。

fjapple 发表于 2010-9-9 14:17

这里判断的零线是指EUT中的,不是系统里的。如果有零线的话,就按标准中的要求写就可以了。

protective bonding conductor那里是不能标保护性接地符号的

zjjpretty 发表于 2010-9-9 15:20

引用第7楼fjapple于2010-09-09 14:17发表的:
   这里判断的零线是指EUT中的,不是系统里的。如果有零线的话,就按标准中的要求写就可以了。

protective bonding conductor那里是不能标保护性接地符号的

It is not a requirement to mark terminals for PROTECTIVE BONDING CONDUCTORS, but where such terminals are marked, the symbol (IEC 60417-5017 (DB:2002-10)) shall be used.大侠, 这标准里不是写了可以标记吗?

zjjpretty 发表于 2010-9-9 15:24

fjapple大侠,谢谢你,还有问题想问你:2.9.4里面Separation from hazardous voltages方法1,2,3对于I类产品我应该选用哪一种呢?谢谢
标准附上:a) (Method 1) DOUBLE INSULATION or REINFORCED INSULATION providing permanent separation,assured by barriers, routing or fixing; or

b) (Method 1) DOUBLE INSULATION or REINFORCED INSULATION on or between the parts to be
separated; or
c) (Method 1) DOUBLE INSULATION, consisting of BASIC INSULATION on one of the parts to be
separated and SUPPLEMENTARY INSULATION on the other part; or
d) (Method 2) BASIC INSULATION on the part at a HAZARDOUS VOLTAGE, together with protective
screening connected to the main protective earthing terminal in accordance with 2.6.1 b);
or
e) (Method 3) BASIC INSULATION on the part at a HAZARDOUS VOLTAGE, together with
connection of the other part to the main protective earthing terminal in accordance with
2.6.1 b), such that the voltage limits for the accessible part are maintained by relative
circuit impedances or by the operation of a protective device; or
f) any other construction providing equivalent separation.
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