耐压

DKC321

各位：
    在生产过程中，进行HI-POT试验有直流1000V,交流1000V,它们有什么不同？

张老五

直流用来测量绝缘电阻和泄漏电流
交流用来耐压，这个是破坏性试验，不可多做

DKC321

版主，
那哪一个更严格呢？

张老五

交流更严格，破坏性也大

wjc366

不错的，我已经下载好了。现在暂时用不到，以后用来可以分享给大家。

wjc366

不错的，我已经下载好了。现在暂时用不到，以后用来可以分享给大家。

hu782814382

我们使用1800V测耐压，匝间是怎么测的？先通过检测机取样，然后看波形的重合度......原理是什么？

bigfamous

张老五 发表于 2010-11-12 16:03
交流更严格，破坏性也大

Advantages and Disadvantages of use DC Voltage for Hipot Test

One of the advantages of using a dc test voltage is that the leakage current trip can be set to a much lower value than that of an ac test voltage. This would allow a manufacturer to filter those products that have marginal insulation, which would have been passed by an ac tester.
直流测试的泄漏电流限值可以设置的更低。允许制造厂家过滤出(被AC测试判定合格的)边界绝缘的产品。

A minor disadvantage of the dc hipot tester is that because dc test voltages are more difficult to generate, the cost of a dc tester may be slightly higher than that of an ac tester.
DC测试的缺点主要是DC电压更难产生，因此DC测试设备相比AC测试设备要更高。

The main advantage of the dc test is DC Voltage does not produce harmful discharge as readily occur in AC.
DC测试过程中不产生(对绝缘)有损伤的放电，而在AC测试中毫无疑问的发生。

It can be applied at higher levels without risk or injuring good insulation. This higher potential can literally “sweep-out” far more local defects.

DC测试可以设置更高的电压水平，不存在风险或者伤害良好绝缘。高电势理论上可"扫描"出更多的局部缺陷。