求UL目击实验室WTDP的circuit breaker

184581148

之前没有见到过啊！

barryyan

我找了下，符合UL要求的Circuit Breaker在大陆有2家申请商，可以直接和他们联系购买，由于数量少，可能单价会比较贵，怎么处理这个单价，只有自己想法子了

barryyan

或者多采购点回来，这里需求这个东东的人还是比较多的

wanghaiyan71

我们也碰到了这个问题！但后来用了较简单的方法实现了！
, ]% n  a, M( i; O5 D8 W1 S* f其实用什么器件不是最主要的，重要的是达到的效果要符合UL的要求。嘿嘿！

zdream_80

学习，原来真不知道

barryyan

请问：WTDP所使用的断路器必须是20A的吗？在进行120/240V 20A的测试时，由于是20A的断路器，感觉很容易就跳开了，导致审核无法进行。。

barryyan

怎么没人回答：
WTDP所使用的断路器必须是20A的吗？在进行120/240V 20A的测试时，由于是20A的断路器，感觉很容易就跳开了，导致审核无法进行。。

liweiqi5

引用第27楼barryyan于2008-08-18 17:39发表的  :
请问：WTDP所使用的断路器必须是20A的吗？在进行120/240V 20A的测试时，由于是20A的断路器，感觉很容易就跳开了，导致审核无法进行。。

它要求的是20A带载, 主要是模仿美洲的电路系统. 见标准写的一段话.
20A短路是很容易跳开的,所以你一定要明白,这个Breaker是用来做什么的.
/ ?5 o& l5 C" r1 G$ i7 T- KUL 60950, 2.6.3.3:

/ i! K" i' ~7 {The PROTECTIVE CURRENT RATING of the circuit (used in Table 2D and in the test of 2.6.3.4) depends
# o% e& Q. s4 [4 }, ?on the provision and location of overcurrent protective devices. It shall be taken as the smallest
of a) or b) or c), as applicable.
7 \' j3 `# V# z/ Ra) For PLUGGABLE EQUIPMENT TYPE A, the PROTECTIVE CURRENT RATING is the rating of an
* ~8 v6 O( A; t* d9 l9 {2 wovercurrent protective device provided external to the equipment (for example, in the
: g' o7 F5 o8 L9 w: Lbuilding wiring, in the mains plug or in an equipment rack) to protect the equipment,
3 |. f7 Z, A* l# b2 Swith a minimum of 16 A.
NOTE 1 In most countries, 16 A is considered to be suitable as the PROTECTIVE CURRENT RATING of the circuit.
$ v& h; B+ F- ]4 p* ~0 ZNOTE 2 In Canada and United States, the PROTECTIVE CURRENT RATING of the circuit is taken as 20 A.
1 r1 e' h0 ]9 K3 q. DNOTE 3 In the United Kingdom, the current rating of the circuit shall be taken as 13 A, not 16 A.
( G) [, x1 j6 z5 ]/ w, \* ^90 CAN/CSA-C22.2 NO. 60950-1-07 ♦ UL 60950-1 MARCH 27, 2007
NAE
8 k1 F: f' l: N9 d# f4 Ob) For PLUGGABLE EQUIPMENT TYPE B and PERMANENTLY CONNECTED EQUIPMENT (see 2.7.1), the
PROTECTIVE CURRENT RATING is the maximum rating of the overcurrent protective device
" H* [) W+ w# c. f' W! D/ r, bspecified in the equipment installation instructions to be provided external to the
equipment (see 1.7.2.3).
$ S& C* g- h+ }2 t1 y) j8 qc) For any of the above equipment, the PROTECTIVE CURRENT RATING is the rating of an
& [' o9 V: y5 s# P: v+ N, Y6 b- Aovercurrent protective device, if provided in or as part of the equipment, that protects
the circuit or part required to be earthed.