This product is applicable to the rated voltage of 500V and the following requirements for anti interference of electronic computers and automatic connection cable. K type B low density polyethylene with anti oxidation property is used for cable wire core insulation. The insulation resistance of polyethylene is high, the resistance to voltage is good, the dielectric coefficient is small and the dielectric loss temperature and variable frequency influence is small, not only can meet the requirements of the transmission performance, but also can ensure the service life of the cable.
In order to reduce the mutual interference between the circuit and the external disturbance, the cable adopts the shield structure. The shielding requirement of the cable is to be used in different occasions, such as the combination of the twisted pair, the total shielding of the twisted pair and the total shielding of the twisted pair combination.
Shielding materials are round copper wire, copper strip, aluminum strip / plastic composite tape three. The shielding pair has better insulating performance with the shield, and if the cable is in use, if the potential difference between the shielding pair occurs, the transmission quality of the signal can not be affected.
When laying the ambient temperature is not lower than: fixed laying -40 C, non fixed laying -15
Minimum bending radius: no armoring layer should be not less than 6 times of cable diameter, with armoured cable should not less than 12 times of cable diameter
At 20 C with DC 500V voltage test stable charging 1min after the insulation resistance should be not less than 2500M / Km
Between each pair of twisted shields and between the twisted shield and the total shield shall not break open
Between the cable core and the wire core and the shield should withstand the 50HZ, AC 2000V voltage test 5min does not breakdown