电动机接线电缆应无破损。
文章对Y BK系列电动机和YBK2系列电动机接线盒的规格进行了比较，介绍了YBK2系列电动机接线盒的设计特点，最后给出设计方案。
It is presented that the design features of terminal box for Series YBK2 flameproof three-phase induction motor, comparing with Series YBK and a design proposal is given in this article.
而利用电动机启动电流检验差动保护接线的新方法，简便可靠，容易与现场安装施工进度相协调。
The new approach, which checks differential protection connection using electromotor starting current, is simple and reliable, and easy to be coordinated with installation schedule.
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