Nanjing control cable control cable MKVV2214 * 0.75

Description :

　　The rated voltage of the control cable should not be lower than the working voltage of the circuit, and should meet the requirements of transient and power frequency overvoltage that may be experienced. To ensure that the control cable reduces the affected area in the event of insulation breakdown, mechanical damage, or fire.

　　Control cables belong to electrical equipment cables, and the color of insulated wire cores is generally black with white lettering. In addition, low-voltage power cables are generally color coded, and the cross-section of control cables generally does not exceed 10 square meters. Control cables are used for transmitting control signals, with a large number of cores. According to the standard, there are 61 cores, but they can also be produced according to user requirements.

　　Main performance of control cables:

　　1. Insulation resistance: Each core wire is grounded with the remaining cores, and the control cable is greater than 10000M Ω· km, while the HYAT cable is greater than 3000M Ω· km;

　　2. Insulation electrical strength: In terms of the insulation electrical strength of the product itself, it does not break through between the conductors as a whole, ensuring that the overall advantage value is obvious during use. Nowadays, many people still want to know if it is good when choosing. After recognizing these basic advantages, everyone can make a reasonable choice according to the location and certain characteristics when choosing;

　　3. Rated voltage (U0/U): 450/750V;

　　4. Working capacitance: average value 52&# 177; 2nF/km。

　　The long-term allowable working temperature of the control cable conductor used in coal mines is 70 ℃, and the cable laying temperature should not be lower than 0 ℃. The allowable bending radius for control cables used in coal mines: For cables with armor or copper tape shielding structures, it should not be less than 12 times the outer diameter of the cable. For flexible cables with a shielding layer structure, it should not be less than 6 times the outer diameter of the cable. For unarmored cables, the outer diameter should not be less than 6 times that of mining cables.

　　Precautions for installation and wiring of control cables:

　　1. Under the eaves. Standard LAN cables can only be used when not directly exposed to sunlight or ultra-high temperatures, and it is recommended to use pipelines. Ultraviolet (UV) - Do not use cables without UV protection in direct sunlight environments;

　　2. On the exterior wall. Avoid direct sunlight on the wall and human damage. Heat - The temperature of cables in metal pipes or cable trays is very high, and many polymer materials will reduce their service life at this temperature;

　　3. In a pipeline (made of plastic or metal). If in a pipeline, pay attention to the damage of plastic pipes and the thermal conductivity of metal pipes. Mechanical damage (repair cost) - Fiber optic cable repair is very expensive, requiring at least two terminations at each breakpoint;

　　4. Suspended applications/overhead cables. Consider cable sag and pressure. Whether the cable is directly exposed to sunlight;

　　5. Directly laying in underground cable trenches has a limited control range. The installation of cable trenches should be checked regularly for dryness or moisture levels. Grounding - If the shielding layer of the control cable needs to be grounded, the corresponding standards must be followed;

　　6. Underground pipelines. For future upgrades, cable replacement, and isolation from surface pressure and surrounding environment, installing auxiliary pipelines for isolation is a better method. But don't expect the pipeline to remain dry forever, as this will affect the choice of cable type. Water - Moisture in twisted pair cables in a local area network can increase the cable's capacitance, thereby reducing impedance and causing near end crosstalk issues.

　　Tianjin Cable Factory Branch adheres to the production principle of "survival through quality, development through reputation" and has won high praise from both new and old customers. The company has scientific internal management, a sound quality assurance system, honesty as the foundation, and a good reputation, which is highly trusted by domestic and foreign customers.

AfterSalesService :

• Control cable MKVVP