Applicable to industrial and mining enterprises, Ministry of Energy and Transportation door Rated AC voltage Polychloride used in control and protection circuits under 450/750 V ethylene Insulation, PVC sheath Control cable 。
main performance
Performance characteristics
DC resistance: 20 ℃, 0.4mm copper wire, less than or equal to 148 Ω/km, 0.5mm copper wire, less than or equal to 95 Ω/km.
2. Electrical strength of insulation: 1min 1kv non breakdown between conductors and 1min 3kv non breakdown between conductors and shielding
3. Insulation resistance: each core wire is grounded with other core wires to control Cable More than 10000M Ω. km, HYAT cable more than 3000M Ω. km. 4. Working capacitance: average 52 ± 2nF/km
5. Far end crosstalk defense degree: the average power of * * * combination at 150kHz is greater than 69dB/km.
Performance difference
power cable It is used to transmit and distribute high-power electric energy in the trunk line of the power system, and the control cable directly transmits electric energy from the distribution point of the power system to the power connection line of various electrical equipment and appliances. The rated voltage of power cable is generally 0.6/1kV and above, and the control cable is mainly 450/750V. During the production of power cables and control cables of the same specification, the insulation and sheath thickness of power cables are thicker than that of control cables. （1） Control cables belong to electrical equipment cables, and power cables are two of the five categories of cables.
（2） The standard of control cable is 9330, and the standard of power cable is GB12706.
（3） The color of the insulated core of the control cable is generally black and white, and the low-voltage of the power cable is generally color separated.
（4） The cross section of control cable generally does not exceed 10 square meters. The power cable is mainly used for power transmission and generally has a large cross section.
Because of the reasons mentioned above, the specification of power cable can be generally larger, up to 500 square meters (the range that conventional manufacturers can produce), and there are relatively few manufacturers that can do it with a larger section, while the section of control cable is generally smaller, and the larger section generally does not exceed 10 square meters.
In terms of the number of cable cores, according to the requirements of the power grid, most power cables are generally 5 cores, while control cables are used to transmit control signals, with a large number of cores. According to the standard, 61 cores are more, but they can also be produced according to user requirements.
