What cable is kvv?

KVV cable is a kind of polyvinyl chloride insulated control cable, mostly used for control, signal, protection and measurement system wiring; its rated voltage is 450/750V or 0.6/1kV. If the conductors in KVV cables work for a long time, the maximum operating temperature cannot exceed 70 degrees, and the laying environment temperature cannot be lower than zero. If you want to work in a sub-zero environment, you must preheat it first.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

KVV cable is a kind of polyvinyl chloride insulated control cable, which is mostly used for control, signal, protection and measurement system wiring. It is manufactured according to standards such as GB9330 "Plastic Insulated Control Cables", IEC60227 "Polyvinyl Chloride Insulated Cables with Rated Voltage 450/750V and Below" and IEC60502 "Extruded Insulated Power Cables with Rated Voltage 1-30kV and Accessories".

1. KVV cable is a control cable, which is what we often call PVC insulated control cable. Generally used for wiring on control, signal and measurement systems.

2. Its rated voltage is 450/750V or 0.6/1kV.

3. If the conductor works for a long time, the maximum working temperature cannot exceed 70 degrees, and the laying environment temperature cannot be lower than zero. If you want to work in a sub-zero environment, you must preheat it first.

4. Allowable bending radius: ① The allowable bending radius of unarmored cables is 6 times the outer diameter or more. ②The allowable bending radius of armored or copper-tape shielded cables is 12 times the outer diameter. ③The allowable bending radius of shielded flexible cables is also 6 times or more of the outer diameter.

5. Laying scope: suitable for fixed occasions, such as indoors, cable trenches and pipelines.

Usage characteristics

• The power frequency rated voltage Uo/U is 450/750V.

• The maximum allowable long-term operating temperature of the cable conductor is 70°C.

• The ambient temperature when laying cables should not be lower than 0℃. If the ambient temperature is lower than 0℃, the cables should be preheated.

• The recommended allowable bending radius of cables is as follows:

  • For unarmored cables, it should be no less than 6 times the outer diameter of the cable;

  • Armored or copper tape shielded cables should be no less than 12 times the outer diameter of the cable;

  • Shielded flexible cables should be no less than the outer diameter of the cable 6 times the outer diameter.

How to choose the cable

1. Model selection

(1) You can choose the model based on the usage, laying conditions and safety.

(2) Depending on the use, power cables, control cables, insulated cables, etc. can be selected.

(3) From the perspective of laying conditions, general plastic insulation, armored cables, anti-corrosion cables, etc. can be selected.

(4) From the perspective of safety, flame retardant cables, fire-resistant cables, halogen-free flame retardant cables, etc. can be selected.

2. Selection of specifications

(1) What specifications to use should consider whether the cable is prone to heat, the voltage loss during operation and the mechanical strength of the wire itself, etc.

(2) If it is a low-voltage power line, choose it from the perspective of heating, because it carries a large current, and then consider the voltage loss and mechanical strength.

(3) For high-voltage lines, the current density is first of all, followed by heat generation and voltage loss.

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