描述
执行标准：
Q/SX13-2020 1E级K3类仪表电缆
(符合核工业第二研究设计院编制的技术任务书)
产品特性：
1 1E级是指完成反应堆紧急停堆，安全壳隔离，堆芯应急冷却，反应堆余热导出，反应堆安全壳的热导出，防止放射性物质向周围环境排放等功能的电气系统设备的安全级。
2 K3类电缆是指在安全壳外，在正常情况及地震荷载下能执行其规定功能的电缆。
3该电缆设计结构为低烟无卤阻燃型电缆，火灾发生时，烟浓度低，有害气体释放量小，对保护电器设备，人员安全转移以及争取救火时间起到积极作用。
产品使用特性：
- 额定电压是电缆设计和运行的基准电压、用U0/U表示、单位为V
核级仪表电缆300/500V
2.电缆导体的长期允许工作温度为90℃
3.短路时(最长持续时间不超过4s),电缆导体的温度不超辺250℃。
4.电缆使用寿命设计为不低于50年。
5.电缆的敷设温度应不低于0℃ ,低于0℃时电缆应进行预热。
6.电缆的使用环境温度：
反应堆厂房外 (-10 ~ +55) ℃
大气压力为 (0.096 ~ 0.106) MPa
相对湿度为99%。
7.电缆的允许弯曲半径应不小于电缆外径的8倍。
电缆型号及名称
| 型 号 Type | 名 称 Product name |
| HYEJP1EJ-1 | 铜芯低烟无卤阻燃交联聚烯烃绝缘和护套镀锡铜丝编织分屏蔽核级测量用仪表电缆 Instrument cable for nuclear power station with Cu conductor .low-smoke free-halogen flame-retardant and cross-linking polyolefine insulation and sheath .tinned copper wire braided individual shield |
| HYEJP1EJ-2 | 铜芯低烟无卤阻燃交联聚烯径绝缘和护套镀锡铜丝编织分屏蔽及总屏蔽核级测量用仪表电缆 Instrument cable for nuclear power station with Cu conductor .low-smoke free-halogen flame retardant and cross-linking polyolefine insulation and sheath .tinned copper wire braided individual and collective shield |
| HYEJP1EJ-3 | 铜芯低烟无卤阻燃交联聚烯径绝缘和护套镀锡铜丝编织总屏蔽核级测量用仪表电缆 Instrument cable for nuclear power station with Cu conductor .low-smoke free-halogen flame retardant and cross-linking polyolefine insulation and sheath .tinned copper wire braided collective shield |
| HYEJP2EJ-1 | 铜芯低烟无卤阻燃交联聚烯烃绝缘和护套铜／塑复合膜分屏蔽核级测量用仪表电缆 Instrument cable for nuclear power station with Cu conductor .low-smoke free-halogen flame-retardant and cross-linking polyolefine insulation and sheath .Cu／polyester composite film winding individual shield |
| HYEJP2P1EJ-2 | 铜芯低烟无卤阻燃交联聚烯径绝缘和护套铜／塑复合膜分屏蔽镀锡铜丝编织总屏蔽核级测量用仪表电缆 Instrument cable for nuclear power station with Cu conductor .low-smoke free-halogen flame-retardant and cross-linking polyolefine insulation and sheath .Cu／polyester composite film winding individual shield，tinned copper wire braided individual and collective shield |
| HYEJP3EJ-1 | 铜芯低烟无卤阻燃交联聚烯烃绝缘和护套铝／塑复合膜分屏蔽核级测量用仪表电缆 Instrument cable for nuclear power station with Cu conductor .low-smoke free-halogen flame-retardant and cross-linking polyolefine insulation and sheath .Al／polyester composite film winding individual shield |
| HYEJP3P1EJ-2 | 铜芯低烟无卤阻燃交联聚烯径绝缘和护套铝／塑复合膜分屏蔽镀锡铜丝编织总屏蔽核级测量用仪表电缆 Instrument cable for nuclear power station with Cu conductor .low-smoke free-halogen flame-retardant and cross-linking polyolefine insulation and sheath .Al／polyester composite film winding individual shield，tinned copper wire braided individual and collective shield |
| HYEJP1E-1 | 铜芯低烟无卤阻燃交联聚烯烃绝缘低烟无卤阻燃聚烯烃护套镀锡铜丝编织分屏蔽核级测量用仪表电缆 Instrument cable for nuclear power station with Cu conductor. low-smoke free-halogen flame-retardant cross-linking polyolefine insulation， low-smoke free-halogen flame-retardant sheath，tinned copper wire braided individual shield |
| HYEJP1E-2 | 铜芯低烟无卤阻燃交联聚烯烃绝缘低烟无卤阻燃聚烯烃护套镀锡铜丝编织分屏蔽及总屏蔽核级测量用仪表电缆 Instrument cable for nuclear power station with Cu conductor. low-smoke free-halogen flame-retardant cross-linking polyolefine insulation， low-smoke free-halogen flame-retardant sheath，tinned copper wire braided individual and whole shield |
| HYEJP1E-3 | 铜芯低烟无卤阻燃交联聚烯烃绝缘低烟无卤阻燃聚烯烃护套镀锡铜丝编织总屏蔽核级测量用仪表电缆 Instrument cable for nuclear power station with Cu conductor. low-smoke free-halogen flame-retardant cross-linking polyolefine insulation， low-smoke free-halogen flame-retardant sheath，tinned copper wire braided whole shield |
| HYEJP2E-1 | 铜芯低烟无卤阻燃交联聚烯烃绝缘低烟无卤阻燃聚烯烃护套铜／塑复合膜分屏蔽核级测量用仪表电缆 Instrument cable for nuclear power station with Cu conductor. low-smoke free-halogen flame-retardant cross-linking polyolefine insulation， low-smoke free-halogen flame-retardant sheath，Cu／polyester composite film winding individual shield |
| HYEJP2P1E-2 | 铜芯低烟无卤阻燃交联聚烯烃绝缘低烟无卤阻燃聚烯烃护套铜／塑复合膜分屏蔽镀锡铜丝编织总屏蔽核级测量用仪表电缆 Instrument cable for nuclear power station with Cu conductor. low-smoke free-halogen flame-retardant cross-linking polyolefine insulation， low-smoke free-halogen flame-retardant sheath，Cu／polyester composite film winding individual shield，tinned copper wire braided individual and collective shield |
| HYEJP3E-1 | 铜芯低烟无卤阻燃交联聚烯烃绝缘低烟无卤阻燃聚烯烃护套铝／塑复合膜分屏蔽核级测量用仪表电缆 Instrument cable for nuclear power station with Cu conductor. low-smoke free-halogen flame-retardant cross-linking polyolefine insulation， low-smoke free-halogen flame-retardant sheath，Al／polyester composite film winding individual shield |
| HYEJP3P1E-2 | 铜芯低烟无卤阻燃交联聚烯烃绝缘低烟无卤阻燃聚烯烃护套铝／塑复合膜分屏蔽镀锡铜丝编织总屏蔽核级测量用仪表电缆 Instrument cable for nuclear power station with Cu conductor. low-smoke free-halogen flame-retardant cross-linking polyolefine insulation， low-smoke free-halogen flame-retardant sheath，Al／polyester composite film winding individual shield，tinned copper wire braided individual and collective shield |
产品结构示意图
主要技术指标
1.成品电缆绝缘线芯之间应承受工频交流电压2500V 2分钟不击穿。绝缘线芯与屏蔽之间应经受工频交流电压1000V 5分钟不击穿。取自成品电缆的绝缘线芯(不少于5米)，浸入室温水中1小时后，在导体和水之间应经受5分钟工频电压1500V试验不击穿。
2.额定温度下绝缘电阻常数
按照GB／T3048. 6的要求，在90℃时，通电5分钟后，测量绝缘线芯的绝缘电阻常数应不小于3MΩ・km。
3.工作电容(线间电容)
绞对的或相邻芯间的工作电容在频率为1kHz时电缆的电容应符合规定。
