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What is the voltage sag test?

Release time:2026-08-27 16:17

电压跌落测试项目:电压暂降和短时中断,电压暂降和电压中断是由电网、电力设施的故障或负荷突然出现大的变化引起的。电压变化是由连接到电网的负荷的连续变化引起的。如果EUT对电源电压的变化不能及时作出反应,就有可能引发故障。
电压跌落测试参考标准:IEC61000-4-11,限值如下:

表1 电压暂降试验优先采用的试验等级和持续时间

电压跌落测试

表2 短时中断试验优先采用的试验等级和持续时间

短时中断试验

第1类:适用于受保护的供电电源,其兼容水平低于公用供电系统。它涉及到对电源骚扰很敏感的设备的使用。
第2类:一般适用于商用环境的公共耦合点PCC和工业环境的内部耦合点IPC。该类的兼容水平与公用供电系统的相同。因此涉及用于公用系统的元件也适用于这类工业环境。
第3类:仅适用于工业环境中的IPC。该类某些骚扰现象的兼容水平要高于第2类。在连接有下列设备时应认为是这类环境:a.大部分负荷经换流器供电;b.有焊接设备;c.频繁启动的大型电动机;d.变化迅速的负荷。

了解电压跌落测试设备交流电压跌落发生装置直流电压跌落测试模拟器


RCETEST is a hightech enterprise focusing on electromagnetic compatibility (EMC) testing including independent R&D, manufacturing, sales and fulllifecycle supporting services, and provides professional EMC test instruments and systematic turnkey testing solutions for global customers.
Civilian field: Electrostatic discharge generator, EFT/Burst generator, lightning surge generator, radio frequency conduction anti-interference test system, industrial frequency magnetic field generator, damping oscillation magnetic field generator, alternating voltage drop generator, etc.
Automotive field: Electrostatic discharge generator, 7637 test system, automotive low-voltage electrical performance test system, automotive high-voltage electrical performance test system, high current injection test system, automotive low-frequency magnetic field immunity, radio frequency radiation immunity test system, etc.
Military field: Electrostatic discharge generator, low-frequency conduction immunity test system, onboard power supply characteristics, cable bundle injection test system, low-frequency magnetic field immunity test system, high-speed damping oscillation test system, etc.


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