Test method for ASTM D149 solid electrical insulating materials at commercial power frequencies the dielectricbreakdownvoltage and dielectric strength.
ASTM D149固体电绝缘材料在工业电源频率下的介电击穿电压和介电强度的试验方法。
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Standard Test Method for dielectricbreakdownvoltage and dielectric strength of D149 ASTM solid electrical insulating materials at industrial power frequencies.
ASTM D149固体电绝缘材料在工业电源频率下的介电击穿电压和介电强度的试验方法。
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The exact determination of the breakdownvoltage must therefore be attached to the measurement of an electrical value characteristic of the dielectricbreakdown phenomenon.