Wire and cable kvv

Kv cable is a kind of pvc insulated control cable, also known as plastic insulated cable; Mainly used for control, signal, protection and measurement system wiring; Scope of application: PVC insulated PVC sheathed control cables are applicable to the wiring of control, signal, protection and measurement systems with rated voltage of 450/750V and below or 0.6/1kV and below. KVV cable letter K-control, the first V represents PVC insulation, and the second V represents PVC sheath; KVV has two conductor structures: "the first conductor" is solid conductor, and "the second conductor" is multi-strand stranded conductor, which is relatively soft.

Characteristics of kvv cable

1. The power frequency rated voltage Uo/U is 450/750V or 0.6/1kV.    2. The maximum allowable long-term working temperature of cable conductor is 70 ℃.    3. The ambient temperature during cable laying shall not be lower than 0 ℃. If the ambient temperature is lower than 0 ℃, the cable shall be preheated.    4. The recommended allowable bending radius of the cable is as follows: for unarmored cable, it shall not be less than 6 times of the outer diameter of the cable; Armored or copper tape shielded cable shall not be less than 12 times of cable outer diameter; The shielded flexible cable shall not be less than 6 times the outer diameter of the cable.

Difference between kv cable and yjv cable

1. Control cable is mainly used for electrical equipment, and power cable is of different types. Because we habitually divide cables into five categories, they are only two different categories.    2. They refer to different standards. The standard of KVV control cable is 9330, while the standard of YJV power cable is GB12706.    3. The colors of their insulated cores are also different. Generally speaking, KVV control cables use black printed white characters. In general, the color of the insulated core of YJV power cable seems to be color separation.    4. The cross section of the KVV control cable will not exceed 10 square meters, while the YJV power cable, because its main function is to transmit power, generally uses a larger cross section.    5. Their cores are also different. Generally speaking, YJV power cable cores are less than 5 cores for strong current; However, KVV control cable has many cores. The frequently used cores vary from 2 to 37, and some can even reach 61. According to customer requirements.    6. The insulation materials used inside them are also different. The material used for KVV control cable is plastic PVC material as the insulation layer. The YJV power cable uses polyethylene PE as the insulation layer. Because the temperature resistance of PE can reach 90 degrees, and that of PVC can only reach 70 degrees. Therefore, YJV power cable has higher temperature resistance.

Difference between kv cable and rvv cable

1. Different names: the full name of KVV cable is PVC insulated PVC sheathed control cable, RVV cable is PVC insulated PVC sheathed flexible cable, the "K" of KVV cable represents the control cable, and the "R" of RVV cable represents the flexible cable, so one is called control cable and the other is called flexible cable.    2. Different structures: KVV cables are composed of multi-strand BV wires, while BV wires are composed of single-strand conductors. KVV cables are hard and large, and are generally used as backbone cables for signal or power transmission; RVV cable is composed of multi-strand RV wire, which is composed of multi-strand copper wire. Therefore, RVV cable body is relatively soft and small, which is often used for patch panels in life and power connection wires of various electrical appliances.    3. Different uses: as mentioned in the second point, KVV cables are mostly used for the trunk cables of signal or power transmission, and sometimes buried methods are used for laying and installation. KVV cables are suitable for the wiring of control, signal, protection and measurement systems with rated voltage of 450/750V and below or 0.6/1kV and below.    RVV cables are mostly used for control signal transmission lines, electrical equipment, instruments, automation equipment, security and anti-theft alarm systems, high-rise building intercom systems, household lighting connection lines, etc. Because they are mostly used for household electrical connection lines, they also become power lines.