为什么有些规定耐压测试器必须有500VA变压器？

xltpxe · 发表于 2011-11-20 02:25:57

如标题..

诗心竹雨 · 发表于 2011-11-20 02:26:08

对于测试仪器是有功率要求的。如电压与电流的积哟!100毫安电流，3750伏特电压，功率就是375瓦特啦!

xshrmm · 发表于 2011-11-20 02:26:24

楼上的正解！

谢奇凸 · 发表于 2011-11-20 02:26:57

原来如此！！

magebao · 发表于 2011-11-20 02:27:07

学习了！

志纤陶 · 发表于 2011-11-20 02:27:19

那家电里有
The high-voltage source used for the test is to be capable of supplying a short circuit current
Is between the output terminals after the output voltage has been adjusted to the appropriate
test voltage. The overload release of the circuit is not to be operated by any current below the
tripping current Ir. The values of Is and Ir are given in Table 5 for various high-voltage
sources."
Is有要求20mA怎么解释

志纤陶 · 发表于 2011-11-20 02:27:29

不好意思刚少写了个0
那家电里有
The high-voltage source used for the test is to be capable of supplying a short circuit current
Is between the output terminals after the output voltage has been adjusted to the appropriate
test voltage. The overload release of the circuit is not to be operated by any current below the
tripping current Ir. The values of Is and Ir are given in Table 5 for various high-voltage
sources."
Is有要求200mA怎么解释

magebao · 发表于 2011-11-20 02:27:40

参考论坛上的:
http://www./read.php?tid-33678.html

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