ASTM A717 / A717M单片样品表面绝缘电阻率标准试验方法
日期:2012-02-07 09:49
h that successive measurements of a specimen often yield different values.
1. Scope
1.1 This test method covers a means of testing the surface insulation resistivity of single strips or punchings of flat-rolled electrical steel under predetermined conditions of voltage, pressure, and temperature.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be us
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