1.1 本试验方法涵盖了在预定电压、压力和温度条件下，测试应用于扁平轧制电工钢相邻叠片的电绝缘涂层层间电阻的方法。它表明了电工钢表面涂层对限制电机层间损耗的有效性。层间电阻直接以电阻单位（kΩ）测量。 1.2 本试验方法特别适用于但不限于涂有无机绝缘涂层的电工钢。 1.3 以惯用（cgs emu和英寸磅）或国际单位制表示的值和方程应单独视为标准。在本标准中，国际单位制显示在括号中。 每个系统中规定的值可能不是精确的等效值；因此，每个系统应相互独立使用。合并两个系统的值可能会导致不符合本标准。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 本试验方法特别适用于绝缘涂层应用的质量控制。本试验方法测量绝缘涂层的层间电阻，定义见 3.1.4 . 层间电阻是衡量涂层绝缘质量的指标。层间电阻以kΩ为单位。 5.2 根据本试验方法测定的层间电阻与通过试验方法测定的量不同 A717/A717M . 5.3 本试验方法特别适用于表面绝缘电阻超过0.3kΩ·cm的涂有无机绝缘涂层的电工钢 2. [30 kΩ·mm 2. ]使用测试方法测试时 A717/A717M （富兰克林电流小于0.02 a）。该测试方法可以很容易地扩展到由两个表面测试仪组成的设备允许的任何绝缘电阻率范围。对于本文规定的设备，10μA电流设置和12μA电流设置的最大可测量电阻为1200 kΩ 000 kΩ，用于1μA电流设置；测试系统的最大电压为12 V。 5.4 建议使用不同的接触位置在同一组两个电工钢叠片上重复读数，以及测试同一批次电工钢的多个叠片。建议多个读数，因为涂层厚度可能在给定的电工钢层压表面上有所不同。 此外，从同一批电工钢上取下的几个叠片的涂层厚度可能不同。涂层厚度的这种变化可能导致测量的层间电阻变化。所需的读数数量取决于涂层的性质和所需的精度。

1.1 This test method covers a means of testing the interlaminar resistance of electrically insulating coatings as applied to adjacent laminations of flat-rolled electrical steel, under predetermined conditions of voltage, pressure and temperature. It indicates the effectiveness of surface coatings on electrical sheet steels for limiting interlaminar losses in electrical machinery. The interlaminar resistance is measured directly in units of resistance (kΩ). 1.2 This test method is particularly useful for, but not limited to, electrical steels coated with inorganic insulating coatings. 1.3 The values and equations stated in customary (cgs-emu and inch-pound) or SI units are to be regarded separately as standard. Within this standard, SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 This test method is particularly suitable for quality control in the application of insulating coatings. This test method measures the interlaminar resistance of insulating coatings, as defined in 3.1.4 . Interlaminar resistance is the measure of the insulating quality of the coating. Interlaminar resistance is reported in units of kΩ. 5.2 The interlaminar resistance determined in accordance with this test method is not the same quantity determined by Test Method A717/A717M . 5.3 This test method is particularly useful for electrical steels coated with inorganic insulating coatings having surface insulation resistivities in excess of 0.3 kΩ·cm 2 [30 kΩ·mm 2 ] when tested using Test Method A717/A717M (a Franklin current less than 0.02 A). This test method can readily be extended to any range of insulation resistivity that the equipment comprising the two-surface tester allows. For the equipment specified herein, the maximum measurable resistance is 1200 kΩ for the 10-μA current setting and 12 000 kΩ for the 1-μA current setting; the maximum voltage for the test system is 12 V. 5.4 Repeat readings on the same set of two electrical steel laminations using different contact positions, as well as the testing of multiple laminations from the same lot of electrical steel, are recommended. Several readings are suggested because the coating thickness may vary across the surface of a given electrical steel lamination. Additionally, the coating thickness may vary across several laminations taken from the same lot of electrical steel. Such variations in coating thickness are likely to yield variations in the measured interlaminar resistance. The required number of readings depends on the nature of the coating and the accuracy required.