u kv
u m kv
u 0 * kv
a 和 b 类系统 system categories a and b
c 类系统 systems categories c
6
7.2
3.6
6
10
12
6
8.7
15
17.5
8.7
12
20
24
12
18
30
36
18
－
35
40.5
21
26
a类系统──该类系统任何一相导体与地和接地导体接触时，能在1min内与系统分离
b类系统──该类系统仅包括单相接地故障短时运行的条件，接地故障时间应不超过1h, 但在任何情况下，zui长不超过8h每年接地故障总持续时间不超过125h；
c类系统──不属于a类、b类的系统。
system category a──this category comprises those systems in which any phase conductor that comes in contact with earth or an earth conductor. is disconnected from the system within 1 min.
system category b ──this category comprises those system which,under faultconditions,are operated,are operated for ashorttimewith one phase earthed.this period should not exceed 1 h..fora longer period, not exceeding 8h on any occasion, can be tolerated.the total duration of earth faults in any year should not exceed 125h.
system categeory c──this category comprises all systems which do not fall into a and b
电缆的型号type of cable
型号 type
名称 designation
适用范围 application
yjv
铜芯交联聚乙烯绝缘氯乙烯护套电力电缆 copper conductor,xlpe insulated and pvc sheathed power cable
室内、隧道及电缆沟等场所，不能承受机械外力。单芯电缆不允许敷设在磁性管道中。 for laying indoors 、 intunnel or cable trench,unable to bear external mechan-icalforces.single-core cable in magnetic duct is not permissible
yjly
铝芯交联聚乙烯绝缘乙烯护套电力电缆 aluminium conductor, xlpe insulated and pvc sheathed power cable
yjy
铜芯交联聚乙烯绝缘氯乙烯护套电力电缆 copper conductor ,xlpe insulated and pesheathed power cable
yjly
铝芯交联聚乙烯绝缘氯乙烯护套电力电缆 alumimium conductor ,xlpe insulated and pesheathed power cable
yjv22
铜芯交联聚乙烯绝缘钢带铠装聚氯乙烯护套电力电缆 copper conductor ,xlpe insulated, steel tape armoured and pvc sheathed power cable
室内、隧道、电缆沟内，或埋地敷设等，能承受一定机械外力，但不能承受大的拉力。 for laying indoors 、 in tunnel, cable trench, or direct in ground,able to bear external mechanicalforces, but unable to bear large pulling force 。
yjlv22
铝芯交联聚乙烯绝缘钢带铠装聚氯乙烯护套电力电缆 aluminium conductor ,xlpe insulated ,steel tape armoured and pvc sheathed power cable
yjv23
铜芯交联聚乙烯绝缘钢带铠装聚氯乙烯护套电力电缆 copper conductor ,xlpe insulated ,steel tape armoured and pvc sheathed power cable
yjlv23
铝芯交联聚乙烯绝缘钢带铠装聚氯乙烯护套电力电缆 aluminium conductor ,xlpe insulated ,steel tape armoured and pvc sheathed power cable
yjv32
铜芯交联聚乙烯绝缘细钢丝铠装聚氯乙烯护套电力电缆 copper conductor,xlpe insulated,steel wire armoured and pvc sheathed power cable
室内、隧道、电缆沟、竖井或埋地敷设等，能承受机械外力和一定的拉力。 for laying indoors 、 in tunnel, cable french, well or direct in ground,able to bear external mechanical forces, and certain force 。
yjlv32
铝芯交联聚乙烯绝缘细钢丝铠装聚氯乙烯护套电力电缆 aluminium conductor ,xlpe insulated, steel wire armoured and pvc sheathed power cable
yjv33
铜芯交联聚乙烯绝缘细钢丝铠装聚氯乙烯护套电力电缆 copper conductor ,xlpe insulated ,steel wire armoured and pvc sheathed power cable
yjlv33
铝芯交联聚乙烯绝缘钢带铠装聚氯乙烯护套电力电缆 aluminium conductor ,xlpe insulated ,steel wire armoured and pvc sheathed power cable
生产范围production range of cable
型号 type
芯数 nomber of cores
额定电压 rated voltage kv
3.6/6
6/6 6/10
8.7/10 8.7/15
12/20
18/20 18/30
21/35
26/35
导体标称截面 nominal cross-section of conductlr mm2
yjv
yjlv
yjy
yjly
1
25-800
25-800
25-800
35-800
50-630
50-630
50-630
3
25-630
25-630
25-500
35-500
50-400
50-400
50-400
yjv22
yjlv22
yjy23
yjly23
1
25-800
25-800
25-800
35-800
50-630
50-630
50-630
3
25-630
25-630
25-500
35-500
50-400
50-400
50-400
yjv32
yjlv32
yjy33
yjly33
1
25-800
25-800
25-800
35-800
50-630
50-630
50-630
3
25-630
25-630
25-400
35-400
50-240
50-185
50-150