EV-SSPS充电桩电缆

Power cable through a certain load current, it will heat, with the load current increases, the higher the surface temperature of the cable, if not handled in time, the c***equences can be imagined. Such as: polyvinyl chloride (PVC) cable, is the core temperature of 70 degrees for the upper limit, the surface temperature will be low to 5 ~ 10 degrees. Therefore, the cable surface temperature of 60 degrees below the basic security, from the power maintenance c***iderati***, of course, the lower the temperature the better.

电缆在运行中发热原因如下： EV-SSPS充电桩电缆

The reas*** for the heating of the cable are as follows:

1、电缆导体电阻不符合要求，造成电缆在运行中产***热现象。

1, the cable conductor resistance does not meet the requirements, resulting in the operation of the cable fever.

2、电缆选择型不当，造成使用的电缆的导体截面过小，运行中产生过载现象，长时间使用后，电缆的发热和散热不平衡造成产***热现象。 EV-SSPS充电桩电缆

2, cable selection is not appropriate, resulting in the use of the cable conductor section is too ***all, resulting in overload phenomenon, after a long period of use, the cable heat and heat imbalance caused by heat.

3、电缆安装时排列过于密集，通风散热效果不好，或电缆靠近其他热源太近，影响了电缆的正常散热，也有可能造成电缆在运行中产***热现象。 EV-SSPS充电桩电缆

3, the arrangement of the cable is too dense, ventilation cooling effect is not good, or the cable is too close to other heat sources, affecting the normal heat dissipation of the cable, but also may cause the cable to produce heat in operation.

4、接头制造技术不好，压接不紧密，造成接头处接触电阻过大，也会造成电缆产***热现象。

4, the joint manufacturing technology is not good, crimping is not tight, resulting in joint contact resistance is too large, it will cause the cable heating phenomenon.

5、电缆相间绝缘性能不好，造成绝缘电阻较小，运行中也会产***热现象。

5, the cable interphase insulation performance is not good, resulting in insulation resistance is ***all, the operation will produce heat.

6、铠装电缆局部护套破损，进水后对绝缘性能造成缓慢***作用，造成绝缘电阻逐步降低，也会造成电缆运行中产***热现象。

6, armored cable partial sheath damage, after the water to the insulation performance caused by the slow destruction, resulting in the gradual reduction of insulation resistance, will also cause the cable running a fever.

电缆产***热现象后，如不找到原因及时排除故障，电缆继续连续通电运行后将产生绝缘热击穿现象。造成电缆发生相间短路跳闸现象，严重的可能引起火灾。

After the heating phenomenon of the cable, if the cause is not found out in time, the cable will continue to run continuously, and the insulation thermal breakdown will occur. The occurrence of interphase short circuit tripping phenomenon, serious fire may cause.