Subject 8750 测试

诗心竹雨

请问 8750中的耐电压测试 以下这段式什麽意思?
8.4.2 The dielectric withstand test equipment shall employ a transformer of 500-VA or larger capacity and
have a variable output voltage that is essentially sinusoidal or continuous direct current. The applied
potential is to be increased from zero at a substantially uniform rate until the required test level is reached,
and is to be held at that level for 1 minute.
Exception: A 500-VA or larger capacity transformer is not required if the transformer is provided with a
voltmeter to measure directly the applied output potential.

感谢!!!

日夏清

这段是对耐压测试的仪器要求和方法，大致意思如下：
高压仪不仅要有500-VA或者更大的的变压器，而且要有可调的输出电压，使得可以输出正弦曲线或者恒定电流。测试电压应该按照一定的速率从零开始一直调到所需的电压，并将测试电压保持1分钟。
例外：如果变压器有电压表可以直接测出输出的测试电压，那么变压器就不需要500-VA。