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Electric Cable Corrugated Cable Steel Drum
Sep 30,2024
Ruiming cable shaft to introduce you to the reasons for the cable heating in the operation Power cable through a certain load current, it will heat, with the load current increases, the cable surface temperature is higher, if not handled in time, the consequences can be imagined. Such as:
PVC (PVC) cable, is the core temperature of 70 degrees to consider the upper limit, the surface temperature will be low 5 to 10 degrees. So the cable surface temperature of 60 degrees below the basic is safe, from the power supply to consider, of course, the lower the temperature the better.
The cables are warm during operation for the following reasons:
1, cable conductor resistance does not meet the requirements, resulting in the cable in the operation of the phenomenon of fever.
2, improper cable selection, resulting in the use of the cable conductor cross section is too small, the operation of overload phenomenon, long after use, the cable heat and heat imbalance caused by heating phenomenon.
3, when the cable arrangement is too intensive, ventilation cooling effect is not good, or cable near the other heat source too close, affecting the normal cable cooling, may also cause the cable in the operation of heating phenomenon.
4, connector manufacturing technology is not good, crimp is not close, resulting in contact resistance at the junction is too large, can also cause cable heating phenomenon.
5, cable and white insulation performance is not good, resulting in smaller insulation resistance, the operation will have a fever phenomenon.
6, armored cable partial sheath damage, the water after the slow damage to the insulation properties, resulting in insulation resistance is gradually reduced, can also cause the phenomenon of cable heating operation.
Cable heating phenomenon, if not find the reasons for the timely troubleshooting, continuous operation of the cable will continue to produce insulation thermal breakdown phenomenon. Resulting in short-circuit tripping occurred between the cable and the phenomenon of serious may cause a fire.
Keywords: Cable Drum
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