ASTM D1389薄固体电绝缘材料的保护电压试验用标准试验方法
日期:2012-02-08 16:31
aterial being evaluated, except as discussed in 1.2 and 4.3.
A critical part of the apparatus and procedure is the sensitivity and speed of response of the fault detection device. The latter is usually a circuit breaker. Depending upon the characteristics of this latter component, it is very likely that the results obtained using different sets of apparatus will exhibit significant variability.
It is essential that the fault detector respond only to fault currents and that fault currents above a
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