Flat Cable Installation1. Flat cable insulation resistance to the length of 1 km, when the temperature is 20 ℃ + power wire core should be not less than 30 m Ω/km.2. Flat cable, power line between core should be able to withstand 50 Hz, 2500 v voltage test 5 min, the line between the core should be able to withstand ac 50 Hz, 1500 v voltage test.3. Flat ca...
Cable laying method1. Directly buried in the ground.2. Installed the cable trench.3. Installed in the underground tunnel.4. Installed in the building's internal wall or ceiling.5. Installed the bridge on the shelf.6. In the exhaust pipe laying.7. Laying in the bottom.ZMS Cable company is familiar with each type of cable and has strict exp...
Classification of electric wire and cable1. Refers to only the conductor, bare wire without insulation products, including copper, aluminum, and other metal, and the structure of the composite metal circular single wire, various types of overhead transmission line with stranded wire, soft wire, thread, and profile.
2. Winding wire cutting lines...
Parallel cable faultPower cable USES the way of power supply in parallel, is inevitable, when used in the parallel connection of power cable, high voltage cable reminds everybody must make two cables carrying capacity distribution uniformity, otherwise will cause thermal breakdown failure within the cable.
Multi-fiber sheathed power cable used in...
Carrying capacity of high and low voltage cablesHigh and low voltage cable carrying capacity in principle is not the same. High voltage cable current carrying capacity should be slightly lower than the voltage cables.1. Because the high and low voltage cable insulation thickness is different, so the cable conductor of heat dissipation (heat) e...
Flat cable or round cableFlat cables and round cable crane application on whether the main difference in easy winding; We often see large rotary lifting equipment, always dragging cable mostly flat cable, as lifting equipment, the flat cable is always constantly being wrapped around the cable drum, the arrangement is very neat if it is a round cable...
Provisions for cable protection1. Power cable, need to wear protection tube pipe inside diameter should not be less than 1.5 times of cable diameter, concrete pipe, clay pipe, asbestos and cement pipe inside diameter should not be less than 100 mm.2. The bending radius of the cable pipe shall comply with the terms of wear into the cable bending radius...
Knowledge about cables
Cable is mainly by optical fiber glass (fine hair) and plastic to protect casing and plastic coating, fiber optic cable is no gold, silver, copper, aluminum and other metal, there is no recycling value. Power Cable is a certain amount of optical fiber according to certain ways of spring heart, outsourcing has a sheath, some s...
Effect of temperature on broadbandThe biggest influence factor is the temperature, the signal attenuation of the cable is affected by temperature. The temperature rises every 10 degrees Celsius, and the signal attenuation of the cable increases by 4%. Therefore, the effects of temperature on the signal attenuation and function are far greater than m...
Regulations to be observed when selecting cablesThe choice of power cable should follow the following principles:1. The rated voltage of the power cable to be greater than or equal to the rated voltage of the power supply system installation points;2. The cable continuous permissible current should be equal to or greater than the maximum continuous cu...
