Is there a ionic contamination being tested? If so, what is the test frequency.
你们是否能做阻抗测试?测试能力和测试频率如何? 请说明如何控制阻抗, 如何保存(阻抗)测试条?
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External offset currents can be generated by ionic contamination in the insulators connected to the ammeter.
外部偏置电流可以由与安培计相连的绝缘体上的离子沾污产生.
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