是否所有类型的fuse炸开都算fail

abu013

广东安规检测
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有没有对这个问题专业解释的啊

Alexsong

以下是这个问题的专业解释.

* l' ?) e  c1 w. W% ]+ G5.3.8-1 Bursting fuses
6 t/ ]' \# F& [; W6 Z
DESCRIPTION OF ISSUE:

% C0 W& a: g3 Z; E  zType of Issue: Technical

8 O) h2 ~9 j( k1 yDuring fault testing in the Primary circuits of switch mode power supplies (SMPS) and other ITE, sometimes a fuse that provides supplementary (non-branch circuit) overcurrent protection and that complies with either IEC 60127 or UL 248-14 will burst while clearing the circuit Is this an acceptable result and termination of the test?

: R- Y% q" l* @% j' Y& I! HAPPLICATION GUIDELINE:

7 [# k8 t$ k; S3 cA fuse that bursts is not an acceptable result and termination of a test. If a fuse bursts during fault testing per sub-clause 5.3, it does not have adequate breaking (rupturing) capacity. Therefore, such a fuse should be replaced by the manufacturer with another fuse having high breaking capacity. This consideration applies to fuses complying with both IEC 60127 and UL
248-14.
( h9 x4 S3 t' ~8 i1 F* pPlacement of heat shrink or similar tubing over the fuse assembly is not a suitable solution to wholly mitigate potential hazards associated with a bursting fuse.

wind_li

不是100%。但你这种情况，是FAIL了。

UL499

当然不行了

五百次的回眸

明显分断能力不够嘛，这个真不行。但凡保险丝炸飞掉的情况都是不能接受的。

changeid27

你说没有炸碎，但是都炸飞了，可见是有危险啊。。。。不行！！

market

擱3年前那會兒,不是劇烈炸飛(衝擊力強悍,或兼職冒火的)可以加熱縮套管一般可以接受;
現在只要是炸開那就是全部判定Fail,加套管也不行;
, r8 J+ o: B- R% G3 r0 C0 b建議換分斷能力強些的吧,或者改電路...

sky2214

引用第11楼Alexsong于2011-08-19 19:34发表的  :
( y; X8 k4 N% S; J* Z4 U以下是这个问题的专业解释.
+ d& H$ s/ `( C- M9 k- b% i
5.3.8-1 Bursting fuses

1 Q% T& t3 C* @& w9 _2 s  ~) VDESCRIPTION OF ISSUE:
.......

+ E: c) P" Y4 }( K请问是哪个标准？？？？

martin_chiu

算 Failed, 因為, 不能炸破裂

ajay

引用第17楼sky2214于2011-08-20 19:58发表的  :
* o, w" }2 P: }& w: P3 L

请问是哪个标准？？？？

Practical Application Guidelines for Information Technology Equipment –Safety – Part-1: General Requirements PAG 60950-1