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。

Standard Test Method for dielectric breakdown voltage and dielectric strength of D149 ASTM solid electrical insulating materials at industrial power frequencies.

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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。

Test method for ASTM D149 solid electrical insulating materials at commercial power frequencies the dielectric breakdown voltage and dielectric strength.

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随着油的流速增大，发生局部放电的起始电压得到提高，流速的增大有利于提高油的绝缘强度。

Initiation voltage was enhanced with the increase of velocity. The increase of velocity was good to the strength of oil insulation.

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