耐压测试的重要性
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创建于2024-06-02
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- 耐压测试（Withstanding Voltage test）又称作高压测试（Hipot Test）或介电强度测试（Dielectric Test），是考验电缆安全性能非常重要的试验项目之一。测试时采用远高于额定电压的电压值进行短时间测试，如额定电压为300V的ul 2464电子线，需要进行2000v AC/min的测试。其目的在于考验电缆能否在实际电路中长期使用，而不至于发生绝缘被施加的额定电压或短时过高压击穿的事故。对于数据电缆和电力电缆出厂都要进行该项试验，尤其是电力电缆，以保障电缆在合理使用下安全可靠，避免安全事故发生。
- 创建于2024-06-02
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耐压测试的电压有什么要求
1.查看相关测试要求，2.一般常见的耐压测试电压为1000V+两倍工作电压
耐压测试和绝缘电阻测试都是用高压测试，有何区别
绝缘电阻是以工作电压测试，是非破坏性测试，耐压测试是以高出数倍工作电压测试，属于破坏性测试。耐压测试交流较多，绝缘电阻测试是直流，仅为了测试电阻成分。
水冷板耐压测试多长时间？气密性测试多长时间？
水冷板在研发阶段耐压测试一般是30min，生产过程使2min，全检。气密性测试一般是180s，也是全检。
适配进行绝缘耐压测试时报警，需要怎么整改？
适配器做耐压测试不能通过有多种原因，常见的原因有以下几种：1、选用的安规电容不合适，漏电流较大；2、PCB布板有问题，电气间隙太小，打耐压有拉弧；3、元器件（如隔离变压器）安规不够。以上因素都有可能导致耐压测试不通过，建议逐项排查，世强代理的wima有系列产品齐全的安规电容，可在世强官网或APP搜索资料。
在使用IGBT模块10-FZ12NMA040SH-M267F时，用耐压测试仪对IGBT模块进行耐压测试，发现Vce电压为1200V时漏电流达到5mA，这种情况是否正常，应该如何正确测试IGBT耐压？
根据10-FZ12NMA040SH-M267F的Datasheet，当Vge=0时，半桥IGBT的CE极截止电流为0.005mA，不会出现漏电流为5mA的现象。正确的测试方法是先将IGBT的GE极短接，即门极电压为零，然后再使用耐压测试仪对CE极加高压进行耐压测试。
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介质耐压 (VRMS)
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安规认证
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MC-TG9.52H07C
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IP20
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PA293
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