The machine contain main functions of above four testing apparatus, it can automatic test leaking current, grounding electric resistance, dielectric intensity, resting voltage and print testing data.

具备四种测试仪的全部主要技术性能，可连续自动测试漏电流、接地阻抗、电介质强度、剩余电压。可打印测试数据。

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Testing results show that the major factors affecting the deposition efficiency are the welding current, arc voltage and gas flow rate under the condition of same circuit inductance.

试验结果表明，在回路电感值不变的条件下，焊接电流、电弧电压和气体流量是影响熔敷效率的主要因素。

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This paper researches the testing requirement of voltage and current when relay closed or opened if the relay loaded AC single phase separate step motor.

本文研究交流单相异步电动机作为继电器负载时，继电器闭合与分断时电压与电流的试验条件。

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