技术交流 › 综合认证 › 为什么有些规定耐压测试器必须有500VA变压器？

jennyzou 发表于 2009-3-2 15:30

为什么有些规定耐压测试器必须有500VA变压器？

如标题..

wwnw_007 发表于 2009-3-2 16:01

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!

雨花石 发表于 2009-3-2 16:06

楼上的正解！

无间 发表于 2009-4-3 11:03

原来如此！！

小鸭的天空 发表于 2009-4-4 22:46

学习了！

peter1715 发表于 2009-4-6 11:46

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

peter1715 发表于 2009-4-6 11:47

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

小鸭的天空 发表于 2009-4-6 12:38

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

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