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引用第27楼barryyan于2008-08-18 17:39发表的 :( V5 D* \# Q. m' Q& s
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。。
& ~2 O% ^" [$ m3 L5 u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.& {% X& X' P9 t; `, S, y3 Q( r# n" e
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.
: l B4 I# O; ^3 c* [" ZUL 60950, 2.6.3.3:
5 h P5 u! w+ |, U
* B @# _# l. W! T: VThe PROTECTIVE CURRENT RATING of the circuit (used in Table 2D and in the test of 2.6.3.4) depends. z- j* H9 @8 m) R$ C; `( M
on the provision and location of overcurrent protective devices. It shall be taken as the smallest
% E+ l S( X4 Q* l) Gof a) or b) or c), as applicable.3 x$ K8 L$ j& o
a) For PLUGGABLE EQUIPMENT TYPE A, the PROTECTIVE CURRENT RATING is the rating of an5 [# ?$ ]" Z, T) R. u/ h
overcurrent protective device provided external to the equipment (for example, in the
( X5 j0 W4 ]- ?3 l4 ]building wiring, in the mains plug or in an equipment rack) to protect the equipment,% ] F+ G, {# j
with a minimum of 16 A.+ v" v6 S! F* G$ d: ]
NOTE 1 In most countries, 16 A is considered to be suitable as the PROTECTIVE CURRENT RATING of the circuit.
: P/ T: @& K# }# p1 k; F! U, fNOTE 2 In Canada and United States, the PROTECTIVE CURRENT RATING of the circuit is taken as 20 A./ v- J$ m" }. e0 m3 |6 H
NOTE 3 In the United Kingdom, the current rating of the circuit shall be taken as 13 A, not 16 A.
+ T! b8 E B5 e% j* K90 CAN/CSA-C22.2 NO. 60950-1-07 ♦ UL 60950-1 MARCH 27, 2007' y6 @- M2 h. ]. N4 ]" X9 ], g3 C5 D
NAE
L- j- _/ o1 x" `' Vb) For PLUGGABLE EQUIPMENT TYPE B and PERMANENTLY CONNECTED EQUIPMENT (see 2.7.1), the# p: b, H8 r4 i! n% F/ b) E+ `- e
PROTECTIVE CURRENT RATING is the maximum rating of the overcurrent protective device
8 B( @8 v* Q$ ~; W& dspecified in the equipment installation instructions to be provided external to the( V+ r5 _" a7 f4 i6 Z
equipment (see 1.7.2.3).
2 G. J4 O$ T* r) U7 h9 ec) For any of the above equipment, the PROTECTIVE CURRENT RATING is the rating of an
& e4 |+ L/ F. a8 ?overcurrent protective device, if provided in or as part of the equipment, that protects
' [9 c9 u& K9 k1 Q5 C2 }9 lthe circuit or part required to be earthed. |
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