abu013 发表于 2011-8-18 20:13

有没有对这个问题专业解释的啊

Alexsong 发表于 2011-8-19 19:34

以下是这个问题的专业解释.

5.3.8-1 Bursting fuses

DESCRIPTION OF ISSUE:

Type of Issue: Technical

During 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?

APPLICATION GUIDELINE:

A 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.
Placement 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 发表于 2011-8-19 19:56

不是100%。但你这种情况，是FAIL了。

UL499 发表于 2011-8-20 08:37

当然不行了

五百次的回眸 发表于 2011-8-20 09:20

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 发表于 2011-8-20 11:59

你说没有炸碎，但是都炸飞了，可见是有危险啊。。。。不行！！

market 发表于 2011-8-20 13:36

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;
建議換分斷能力強些的吧,或者改電路...

sky2214 发表于 2011-8-20 19:58

引用第11楼Alexsong于2011-08-19 19:34发表的:
以下是这个问题的专业解释.

5.3.8-1 Bursting fuses

DESCRIPTION OF ISSUE:
.......

请问是哪个标准？？？？

martin_chiu 发表于 2011-8-20 20:56

算 Failed, 因為, 不能炸破裂

ajay 发表于 2011-8-20 21:14

引用第17楼sky2214于2011-08-20 19:58发表的:


请问是哪个标准？？？？
Practical Application Guidelines for Information Technology Equipment –Safety – Part-1: General Requirements PAG 60950-1
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查看完整版本: 是否所有类型的fuse炸开都算fail