Selecting five steps of the trolley line Under normal circumstances, the selection of the trolley line is performed according to the following five steps: 1. Electrical load 2. Ambient temperature 3. Temporary rate of electrical load 4. Voltage drop 5. Cost accounting 1. According to How many electrical devices (such as driving) are on the slide wire system, the sum of the operating currents of the motors is the power load of the slide wire, and the type of the slide wire is initially selected according to the ambient temperature of the place where the slide wire is used. The temporary load rate of the power load is determined by the type of the slide wire 4. The maximum voltage drop of the slide wire system is calculated according to the determined slide wire type to ensure normal operation of the power equipment. Three-phase alternating current ΔU=I×ZI×D× 3Z-AC Impedance Single-phase AC ΔU=I×Z×D×2Z-AC Impedance DC Current ΔU=I×R×D×2R-DC resistance where D is the effective length of the calculated voltage drop of the sled system, eg, : Terminal Supply D=L Midpoint Supply D=L/2 Both Ends Supply D=L/4
5. The cost of the selected slide wire includes: a. The cost of the slide wire component, b. The installation cost, c. The cost of lifting the support frame, and d. The voltage drop requirement is met. If it is necessary to increase the power supply point, it will cause the cable and installation. cost.
5. The cost of the selected slide wire includes: a. The cost of the slide wire component, b. The installation cost, c. The cost of lifting the support frame, and d. The voltage drop requirement is met. If it is necessary to increase the power supply point, it will cause the cable and installation. cost.
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