This paper briefly described assessment method for phase-to-ground capacitive current of metal armor cable, simply analyzed and compared the calculation result via sample MV cable grounding capacitive current. Figured out that assessment formula of MV cable grounding capacitive current in Electrical Design Manual is no longer practicality in detailed project, because of different cable material and structure, which should be calculated theoretically, based on cable phase-to-ground capacitive parameter provided by cable producer.%本文提供了单芯电缆、分相铅(铝)护套电缆、屏蔽型电缆每相对地电容的估算方法，通过算例分析对比了中压电缆系统接地电容电流常用估算方法的计算结果。认为由于电缆材料和结构的变化，在具体工程中不宜再利用《电气设计手册》估算公式来计算中压电缆系统的接地电容电流值，而应根据厂家提供的电缆每相对地电容值利用理论公式计算。
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