最近在看IEC60335. 里面有这么段话:
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.
请问各位这里面的Is和Ir表示什么意思呢?为什么要做此测试?怎么做法呢?