Questions regarding electromagnetic cables
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Dear teachers: 1. Are control cables the same as KVVPR and RVVP? 2. Is it necessary to use control cables for the cable running from the solenoid valve at the site to the junction box? Can computer cables, such as DJYVPR 2.5MM, be used instead? 3. Additionally, is it necessary to provide armor for this control cable as well? 32?
Different KVVRP cables are composed of multiple strands of BV solid wires; they have a rigid structure and large size, and are commonly used in applications such as signal control and monitoring circuits where protection against electromagnetic interference is required.3； RVVP cable is made by twisting multiple strands of RV flexible wire; it has a soft structure and small size, and is commonly used in applications such as instruments and audio systems in environments with harsh electromagnetic conditions and where the installation distance is limited. Depending on their application, KVVRP cables are suitable for voltage levels of 450/750V and below; they are used as connection wires for control and monitoring circuits as well as protection circuits. They are commonly employed in environments where protection against electromagnetic interference is necessary, or in situations that require shielding ； RVVP cables are suitable for shielding circuits of electrical appliances, instruments, and electronic devices with a voltage rating of 300/300V or lower; they are commonly used in installation locations with harsh electromagnetic environments and short installation distances. Depending on the application, KVVRP cables are used indoors in situations where flexibility and shielding are required, such as for mobile use4 ； RVVP cables are used in indoor areas, cable trenches, pipes, and other fixed locations where shielding is required10. The safety factor varies; KVVRP cables have a relatively high safety factor. In working environments with frequent movement and bending, they can better protect the internal structure of the cable, thereby extending its service life and enhancing its safety performance.4 ； The safety factor of RVVP cables is lower compared to KVVRP cables.
2. A computer cable can be used. 3. Armoring is required
1. Control cables KVVPR and RVVP are not exactly the same. KVVPR is a flexible cable with multi-core copper conductors, PVC insulation, and PVC sheathing, while RVVP is a flexible cable with copper conductors, PVC insulation, and PVC sheathing, along with a shielding layer. 2. It is generally recommended to use specialized control cables to connect the solenoid valves to the junction box in order to meet the requirements and ensure durability in industrial environments. Although computer cables (such as DJYVPR) can be used in some cases, it is best to verify whether their specifications meet the power and environmental requirements. 3. Whether armor is needed depends on the installation environment. If the cable is to pass through areas where it may suffer physical damage or interference, such as regions with high mechanical stress, then using a armored cable is a safer choice. .
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