发布时间:2025-02-01 11:14:07
电缆套官的型号与电缆截面相关,也与成品外径.
一般来说,电缆的截面不得大于电缆套管的内截面40%.
电缆的截面=成品外径的平方*0.7854.
电缆套官的内截面=内径的平方*0.7854.
浪涌保护器spd中i级分类试验ii级分类试验iii级分类试验的浪涌保护器有怎样的区别
2025-02-01 11:14:07 2025-02-01 11:14:07 2025-02-01 11:14:07 2025-02-01 11:14:07 2025-02-01 11:14:07 2025-02-01 11:14:07 2025-02-01 11:14:07 2025-02-01 11:14:07 2025-02-01 11:14:07 2025-02-01 11:14:07 2025-02-01 11:14:07 2025-02-01 11:14:07 2025-02-01 11:14:07 2025-02-01 11:14:07 2025-02-01 11:14:07我家是kfr 32gw 041 新飞空调 这几天开机就马上自动睡眠关机 怎么办办啊 大热天的怎么取消睡眠关机求解
2025-02-01 11:14:07 2025-02-01 11:14:07 2025-02-01 11:14:07 2025-02-01 11:14:07 2025-02-01 11:14:07