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引用第27楼barryyan于2008-08-18 17:39发表的 :+ T( T% Z, B$ k( k& L2 p- _2 j! c
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。。
, f: L8 T& e+ q d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.3 D% Q @& H8 ]) H6 L
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.
( V5 C% |9 p1 l2 R# Q7 Z2 WUL 60950, 2.6.3.3:
. I3 V" j. u8 q' q3 S7 F1 A+ ^% S1 J) N6 T- i- ~" w1 z
The PROTECTIVE CURRENT RATING of the circuit (used in Table 2D and in the test of 2.6.3.4) depends
1 E% M. q. Z2 I' mon the provision and location of overcurrent protective devices. It shall be taken as the smallest3 Z# J2 U/ j @" r n2 T) w$ W
of a) or b) or c), as applicable.5 u( z- B2 \0 ]( N
a) For PLUGGABLE EQUIPMENT TYPE A, the PROTECTIVE CURRENT RATING is the rating of an
$ m# H8 q9 A3 ]overcurrent protective device provided external to the equipment (for example, in the
/ `6 E. u; `! x3 o! U1 Zbuilding wiring, in the mains plug or in an equipment rack) to protect the equipment,
& G8 J, U5 D( h- j/ h3 P7 Awith a minimum of 16 A.
- H4 D: Y5 p( r, FNOTE 1 In most countries, 16 A is considered to be suitable as the PROTECTIVE CURRENT RATING of the circuit.' B8 k; p+ r; V% z2 N8 v
NOTE 2 In Canada and United States, the PROTECTIVE CURRENT RATING of the circuit is taken as 20 A.
# l6 Y" A; r9 E k* JNOTE 3 In the United Kingdom, the current rating of the circuit shall be taken as 13 A, not 16 A.
3 B0 k# t4 X$ A3 L8 b2 S1 g90 CAN/CSA-C22.2 NO. 60950-1-07 ♦ UL 60950-1 MARCH 27, 2007
9 a3 U7 |1 y" X fNAE
5 E2 ]+ C7 i. M) q& x+ Yb) For PLUGGABLE EQUIPMENT TYPE B and PERMANENTLY CONNECTED EQUIPMENT (see 2.7.1), the. D, i" x' W; m) G
PROTECTIVE CURRENT RATING is the maximum rating of the overcurrent protective device
& ]1 j) ]+ V1 @5 Jspecified in the equipment installation instructions to be provided external to the
. s$ k; k% L6 u' ]equipment (see 1.7.2.3).1 `1 p. `1 L8 j. u
c) For any of the above equipment, the PROTECTIVE CURRENT RATING is the rating of an
) {0 t, Z8 M+ o' [9 |overcurrent protective device, if provided in or as part of the equipment, that protects
4 F4 O/ s) u# ]- I; S, T4 Kthe circuit or part required to be earthed. |
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发表于 2008-8-5 16:09
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