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！
% }5 ?* y3 l+ V' N+ B8 v3 f2 `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  :
+ Z& L  v. Q  h3 }: B* [! {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。。

* c) p$ l% F: O0 f$ K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.
% e4 ~$ }6 }1 s20A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.
UL 60950, 2.6.3.3:
% x; Y) A! f4 l: O  i
The PROTECTIVE CURRENT RATING of the circuit (used in Table 2D and in the test of 2.6.3.4) depends
* t  j6 A: f1 q; d! von the provision and location of overcurrent protective devices. It shall be taken as the smallest
5 B/ k$ E+ N- x: W& U, O' `- oof a) or b) or c), as applicable.
a) For PLUGGABLE EQUIPMENT TYPE A, the PROTECTIVE CURRENT RATING is the rating of an
; H5 _2 O5 I3 m9 xovercurrent protective device provided external to the equipment (for example, in the
5 N* v8 j2 m1 {! g1 K, jbuilding wiring, in the mains plug or in an equipment rack) to protect the equipment,
' f1 }! u' W% P9 u" v6 Gwith a minimum of 16 A.
# A, I$ g# O' b. N3 s: u+ xNOTE 1 In most countries, 16 A is considered to be suitable as the PROTECTIVE CURRENT RATING of the circuit.
  R$ a% ^  P; v4 m8 mNOTE 2 In Canada and United States, the PROTECTIVE CURRENT RATING of the circuit is taken as 20 A.
% g/ k; n4 N1 s, @3 yNOTE 3 In the United Kingdom, the current rating of the circuit shall be taken as 13 A, not 16 A.
( s4 M4 b0 \6 A! F( v2 s( x4 s90 CAN/CSA-C22.2 NO. 60950-1-07 ♦ UL 60950-1 MARCH 27, 2007
NAE
7 A/ e3 V* p7 U3 p7 H  q# ~b) For PLUGGABLE EQUIPMENT TYPE B and PERMANENTLY CONNECTED EQUIPMENT (see 2.7.1), the
+ c/ u- {$ ^6 S0 nPROTECTIVE CURRENT RATING is the maximum rating of the overcurrent protective device
specified in the equipment installation instructions to be provided external to the
2 ]. b4 o& B/ V8 u6 ^* @/ R1 F  hequipment (see 1.7.2.3).
  W2 O) x9 D( Z2 m0 wc) For any of the above equipment, the PROTECTIVE CURRENT RATING is the rating of an
9 _/ L; b0 W6 u: Vovercurrent protective device, if provided in or as part of the equipment, that protects
5 M$ d+ C/ a4 a! l! u% s3 ?, uthe circuit or part required to be earthed.