ASTM D6097 固体介电绝缘材料中有通气孔的水柱提升的相关抗性的标准试验方法
日期:2012-02-08 09:51
ncy and k is between 0.6 and 0.7. The test frequency of 1 kHz is selected to accelerate the water-tree growth. However, the chemical nature of oxidized products from water-treeing may be different at different frequency ranges.
Two assumptions for this test method are: (1) all tested materials grow trees in the same power law kinetic manner and (2) the time under test conditions of 30 days is long enough to establish the difference in water-tree growth. If there is a doubt, at least three differ
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