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那家电里有
+ M* F! R+ u0 i3 t/ W' BThe high-voltage source used for the test is to be capable of supplying a short circuit current& l' W& o! M7 o2 Y S8 q
Is between the output terminals after the output voltage has been adjusted to the appropriate
3 }( [. I' P, ftest voltage. The overload release of the circuit is not to be operated by any current below the* a! Z+ B! i; E* U3 {
tripping current Ir. The values of Is and Ir are given in Table 5 for various high-voltage# |# Q; R% K, ] ]$ u4 @9 ]
sources."3 x2 |, _( c; M/ K1 }) V, ?
Is有要求20mA怎么解释 |
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