Electrical safety in low voltage distribution systems up to 1 kv a . c . and 1 , 5 kv d . c . equipment for testing , measuring or monitoring of protective measures . part 3 : loop impedance 最高可达1 kv交流电和1 . 5 kv直流电的低压配电系统中的电气安全性.试验测量或保护测量监测用设备.第3部分:回线阻抗
Electrical safety in low voltage distribution systems up to 1 kv a . c . and 1 , 5 kv d . c . equipment for testing , measuring or monitoring of protective measures . part 5 : resistance to earth 最高可达1 kv交流电和1 . 5 kv直流电的低压配电系统中的电气安全性.试验测量或保护测量监测用设备.第5部分:接地电阻
Electrical safety in low voltage distribution systems up to 1 kv a . c . and 1 , 5 kv d . c . equipment for testing , measuring or monitoring of protective measures . part 1 : general requirements 最高可达1 kv交流电和1 . 5 kv直流电的低压配电系统中的电气安全性.试验测量或保护测量监测用设备.第1部分:一般要求
Electrical safety in low voltage distribution systems up to 1 kv a . c . and 1 , 5 kv d . c . equipment for testing , measuring or monitoring of protective measures . part 2 : insulation resistance 最高可达1 kv交流电和1 . 5 kv直流电的低压配电系统中的电气安全性.试验测量或保护测量监测用设备.第2部分:绝缘电阻
The low - voltage breaker is a kind of switch electrical appliance . it can get - on and cut the distribution circuit and protect all kinds of faults . it can be widely used in the low - voltage distribution system 低压断路器是用于接通、分断配电电路及对各种故障进行保护的一种开关电器，广泛应用于低压配电系统中。
Electrical safety in low voltage distribution systems up to 1000 v a . c . and 1500 v d . c . equipment for testing , measuring or monitoring of protective measures - insulation monitoring devices for it systems 防护测量的试验测量或监测设备用交流不大于1000v直流不大于1500v的低压配电系统的电气安全性. it系统用绝缘监测设备
Electrical safety in low voltage distribution systems up to 1000 v a . c . and 1500 v d . c . equipment for testing , measuring or monitoring of protective measures - resistance of earth connection and equipotential bonding 不超过交流1000v和直流1500v的低压配电系统电气安全性.防护测试测量或监测设备.接地和等势屏蔽接地阻抗
Rcd electrical safety in low voltage distribution systems up to 1000 v a . c . and 1500 v d . c . equipment for testing , measuring or monitoring of protective measures - residual current devices in tt , tn and it systems 不超过交流1000v和直流1500v低压配电系统电气安全性.防护用试验测量或监测设备. tt tn和it系统用残余电流装置
Electrical safety in low voltage distribution systems up to 1000 v a . c . and 1500 v d . c . equipment for testing , measuring or monitoring of protective measures - equipment for insulation fault location in it systems 不超过1000v交流和1500v直流的低压配电系统电气安全性.防护测量用试验测量或监测设备. it系统绝缘失效定位设备
Electrical safety in low voltage distribution systems up to 1 kv a . c . and 1 , 5 kv d . c . equipment for testing , measuring or monitoring of protective measures . part 8 : insulation monitoring devices for it systems 最高可达1 kv交流电和1 . 5 kv直流电的低压配电系统中的电气安全性.试验测量或保护测量监测用设备.第8部分: ii系统用绝缘监测装置
