In order to reduce mutual crosstalk and external interference between loops, the cable is shielded. The shielding requirements of cables are based on different occasions. They are: twisted-pair shielding, total twisted-pair cable shielding, twisted-pair shielding and total shielding and other methods.
Shielding materials are round copper wire, copper tape, aluminum tape/plastic composite tape. The shielding pair and the shielding pair have better insulation performance. If the potential difference between the shielding and the shielding pair occurs during use of the cable, the signal transmission quality will not be affected.
Technical Parameters
Product rated voltage (U0/U): 300/500V
Long-term working temperature is 70°C
The ambient temperature during laying is not lower than: fixed laying -40°C, non-fixed laying -15°C
Minimum bend radius: no armored layer should be less than 6 times the cable diameter, cable with armored layer should not be less than 12 times the cable diameter
The insulation resistance should not be less than 2500 MΩ·Km after stable charging with DC 500V voltage test at 20°C for 1min
There should be continuous path between each pair of twisted shields and between twisted and total shields
Between the core and the core of the cable and between the shield should withstand 50HZ, AC 2000V voltage test 5min does not breakdown
The control cable is suitable for industrial and mining enterprises, energy transportation departments, PVC insulated and PVC sheathed control cables for use in applications where the rated voltage is 450/750 volts or less and the protection circuit is used.
Use characteristics
Rated voltage: U0/U is 450/750V.
Conductor core long-term working temperature of 70 °C, 95 °C two, cable laying temperature of not less than 0 °C.
The cable's recommended allowable bending radius is as follows:
Unarmoured cables shall not be less than 6 times the outer diameter of the cable;
Armored or copper-shielded cables shall not be less than 12 times the outer diameter of the cable;
Shielded flexible cable, not less than 6 times the cable diameter.
Control cable refers to equipment instrument power supply/signal control
Representative model: KVV/KYJV/other instrument lines
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