DSH 540/542/547(IEC 60950-1)笔记本电脑底部是可触及部件/绕组线的螺旋缠绕层要求/交互终端标准

2021-10-03 10:20:51

DSH 540

Subject: Parts likely to be held or touched during normal use on a portable (laptop) computer


Question:

On a portable (laptop) computer; are parts of the equipment underside considered to be parts likely to be held or touched during normal use such as would be subject to test condition a) of subclause 6.2.1?

Decision:

Given the likely use of a portable (laptop) computer; the underside of the equipment enclosure is a part likely to be held or touched during normal use and is tested as per test condition a).


问题:

便携式(笔记本)电脑的底部是否被认为是在正常使用中可能被抓握或接触的部件,应符合第6.2.1条款(a)要求 ?

决定:

考虑到可能使用便携式(膝上型)电脑,设备外壳底部是正常使用可能被抓握或接触的部件,按照条件a进行测试。

提示:

1、规定只适用于与通讯网络连接的便携式(膝上型)电脑;

2、正常使用可能被抓握或接触的部件相比于只能用手指接触的部件,其抗电强度要求更高。


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DSH 542

Subject: Application of Annex U and 2.10.8 to spirally wound insulation required to be treated as a cemented joint


Question:

When applying the 3rd paragraph of 2.10.5.4, what is the intent of the requirement for spirally wrapped insulation (tape) when the CLEARANCES and CREEPAGE DISTANCES between layers, as wrapped, are less than the required minimum value for Pollution Degree 1?

Decision:

The intent is, if the CLEARANCES or the CREEPAGE DISTANCES between layers, as wrapped, are less than the required minimum value for Pollution Degree 1, the spirally wrapped insulation should be sealed and pass the tests of both:

· Annex U, which requires an electric strength test per Annex U.2 at the voltage specified in U.2; and

· 2.10.8, which requires an electric strength test of 1.6 times the values in 5.2.2 after the testing in 2.10.8.


问题:

当绕组螺旋缠绕胶带层间的电气间隙和爬电距离小于污染等级1要求时,标准规定的意图是什么?

决定:

如果绕组缠绕胶带层间的电气间隙和爬电距离小于污染等级1要求,则螺旋缠绕层应当密封并通过如下2个试验:

1、附录U的抗电强度试验;和

2、湿热处理后的抗电强度试验(试验电压为5.2.2条款的1.6倍)

提示:

1、决议对应IEC 60950-1第1版,新版本标准条款号与决议中提示有差异,但核心内容基本一致,故而翻译稿中不提及条款号;

2、由粘合剂密封的绕组线上的螺旋缠绕层间可以认为是粘合的接缝。


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DSH 547

Subject: Standard for interactive terminals


Question:

Which standard shall be applied for type testing equipment as described below:

Decision:

IEC 60950 is applicable as long as the product is not configured by the OEM’s customer (reseller) and submitted specifically for an application covered under the scope of IEC 60335-2-75 (e.g., audio/video disc vending).


问题:

下述设备的型式检验应采用哪个标准?

产品描述:用于支付系统的工业和个人交互式终端。它能够管理处理数据的外围设备(读卡器、打印机、硬币比较器和银行钞票验证器)。交互式终端通过以太网连接作为“主”计算机的“从机”工作。交互式终端的最终应用在很大程度上取决于安装在“主”计算机上的软件。因此,交互终端的最终用途取决于“主”计算机安装/网络的所有者的意图。

决定:

IEC 60950是适用的,只要产品不是由OEM的客户(经销商)配置的,并特别提交了适用于IEC 60335-2-75范围内的申请(例如,音频/视频光盘出售)。


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