Here is a little common sense: the conductor is allowed to work at 70 ° C, and the long-term use temperature of PVC should not exceed 65 ° C. Therefore, wire and cable are actually in the "internal and external troubles" situation.
Generally, the problems that are easy to occur in the cable production process are insulation eccentricity, uneven thickness of the insulation shield, impurities in the insulation, protrusions in the inner and outer shields, uneven cross-linking degree, dampness of the cable, poor sealing of the metal sheath of the cable, etc.
The outermost layer of the power cable is generally a rubber or rubber composite sleeve. The function of this layer is to insulate and protect the cable from damage.
The proportion of cable demand in high-voltage cables will exceed 51%.Technavio released power cable (2016-2020), according to a report in 2020, the high voltage cable accounted for the proportion of power cable market demand will be more than 51%.In addition, the low voltage cable accounted for 16.1% of total demand, medium voltage cable accounted f...
Introduction of high voltage cablesHigh voltage is defined as any voltage over 1000 volts. Cables for 3000 and 6000 volts exist, but the majority of cables are used from 10 kV and upward. Those of 10 to 33 kV are usually called medium voltage cables, and those over 50 kV are high voltage cables.A cross-section of a high-voltage cable1. Conduct...
35 kV transmission and substation project put into operationOn November 15th, the 35kV Yingshan Tao River project was successfully put into operation with the switch, cable, and support.15.4km 0.55MVA beach, one new river Tao of Yingshan learned 35kV Power transmission engineering project by the national network of Yingshan County power supply com...
