江苏春晨电缆有限公司专业生产高压硅橡胶电机引接线JGG，2
35kV 及以下交联聚乙烯绝缘电力电缆


35kV Cross-linked polyethylene(xlpe)insulating power cable
注：
A 类系统—该类系统任何一相导体与地或接地导体接触时，能
在1min 内与系统分离；高压硅橡胶电机引接线JGG​
B 类系统—该类系统仅包括单相接地故障短路时运行的条件，
接地故障时间应不超过1h，但在任何情况下，最长不超过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。高压硅橡胶电机引接线JGG

​
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
with in 1 min.


System category B—This category comprises those system which,under fault
conditions,are operated for a short time with one phase earthed.This period should
not exceed 1 h.For a longer period,not exceeding 8 h on any occasion,can be
tolerated.The total duration of earth faults in any year should not exceed 125 h.
System category C—This category comprises all syatems which do not fall into
categories A and B.


电缆额定电压的选择Voltage designation
三相系统用电缆的U0 值推荐如下表：The values of U0 recommened for cables to be used in three-phase systems are listed below.
电缆的额定电压应适合于电缆系统的运行状况，用U0/U
（Um）kV 表示。


U0—电缆设计用的导体对地或金属屏蔽之间的额定工频电
压；
U—电缆设计用的导体间的额定工频电压；
Um—设备可承受的“最高系统电压”的最大值。
The rated voltage of the cable for a given application shall be suitable for
the operating conditions in the system in which the cable is used,and is
expressed in the form of U0/U（Um）kV. Where:


U0—The rated power-frequency voltage between conductor and earth
or metallic screen,for which the cable designed；
U—The rated power-frequency voltage between conductors,for which
the cable disigned；
Um—The maximum value of the “highest system voltage”for which
the equipment may be used.