High voltage is applied between the two parts across the insulation being tested, such as the primary circuit and metal enclosure of the equipment under test (EUT).

高压施加于被试的两个相互绝缘的部件之间，例如被试设备的主电路与其金属外壳。

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These factors including distribution of circuit breakers closing Angle, rated voltage of MOA and the insulation level of transmission line are considered.

同时还研究了断路器合闸相位角分布规律、MOA的额定电压、线路绝缘水平等因素的影响。

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It's useful to analyze the effect and damage to the large motor insulation by the VCB switching over-voltage based on the circuit-field analysis method.

利用场路综合分析的方法，来分析真空断路器产生的操作过电压对电动机的绝缘造成的影响和危害，具有一定的现实意义。

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