以下为句子列表：
英文: After electric heating system is installed,check electrical insulation of all circuits.The insulation resistance between generatrix and shielding layer,core wires of series cable before connection at end not be less than 20 MΩ.And then check if DC resista
中文: 电伴热系统安装完工后，应逐路检查系统的绝缘电阻：各种电热带母线与屏蔽层之间、串联带芯线尾端末短接前的各芯线间绝缘电阻均应不小于20MΩ；然后再检查电热带直流电阻是否正常，三相电阻是否平衡。
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