Car DVD Rear view camera line how to pick up
then the maximum power that the line can bear is: P = √3 × U × I × cosφ = 1732 × 380 × 100 × 085 = 110kW According to the use of different, can choose the power cable, overhead insulated cables, control cables, etc ; according to the different conditions of laying can be used to select the cable type, the choice of cable type, to consider the use, laying conditions and safety; Selection of general plastic insulated cable, steel armored cable, steel armored cable, anti-corrosion cable, etc ; according to safety requirements, can choose flame retardant cable, halogen-free flame retardant cable, fire-resistant cable 2 Selection of cable specifications 1 Determine the use of wire and cable specifications (conductor cross-section), should consider the heat, voltage loss, economic current density, mechanical strength and other conditions According to experience, low-voltage power line because of its large load current, it is generally selected by the heat conditions, cross-section, and then check the voltage loss and mechanical strength; 2 Low-voltage lighting line because of its higher voltage level, Loss of conditions to select the cross-section, and then check the heat conditions and mechanical strength; 3 For high-voltage lines, the first by the economic current density selection section, and then check the heat conditions and allow the voltage loss; 4 and high-voltage overhead lines, strength If the user has no experience, should consult the relevant professional units or people's views
The power factor of the three-phase electric power is 0
Check the wire current comparison table, 50 square copper wire laying safety load of about 200A
