标题: Subject 8750 測試 [打印本页] 作者: cing 时间: 2009-8-4 16:32 标题: Subject 8750 測試 請問 8750中的耐電壓測試 以下這段式什麼意思?+ e& i# ?0 s1 z
8.4.2 The dielectric withstand test equipment shall employ a transformer of 500-VA or larger capacity and, ]7 H' C1 y1 j1 r' p
have a variable output voltage that is essentially sinusoidal or continuous direct current. The applied% Y5 ]8 L% W* _/ A( |3 [
potential is to be increased from zero at a substantially uniform rate until the required test level is reached,4 Q( B! ^1 ]" Q" f1 d! a
and is to be held at that level for 1 minute.3 P0 c% o1 o0 H& L- n X
Exception: A 500-VA or larger capacity transformer is not required if the transformer is provided with a7 T8 x+ s P" W5 u* Q, y+ {
voltmeter to measure directly the applied output potential. ) L y9 G9 w+ g- C' K; m9 S" |' V* ]1 G5 Y' o& k
感謝!!!作者: 阿bin 时间: 2009-8-4 21:07
这段是对耐压测试的仪器要求和方法，大致意思如下： b' k5 |, z5 @7 J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。7 z+ F) U+ U, A( N! T% A# M6 ~
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。