UPS to connect the exchange to introduce line, the battle line is not allowed to access anti-Line (Note that there are certain sequence of UPS's).

在连接UPS的交流引入线时，火线零线不允许接反（注意某些UPS还有相序之分）。

youdao

UPS to connect the exchange to introduce line, the battle line is not allowed to access anti-Line (Note that there are certain sequence of UPS's).

在连接UPS的交流引入线时，火线零线不允许接反（注意某些UPS还有相序之分）。

youdao