Load loss, fixed loss, and processing loss can be obtained by measuring the no-load power loss on the main motor line and then performing some simple calculations. According to this, we can effectively grasp the energy consumption of the equipment and clearly distinguish the relationship between the three kinds of losses. If the fixed loss accounts for a large proportion, the mechanical transmission mode should be improved. If the load loss is large, it indicates the operation of the motor. The condition is poor or the motor itself is too energy intensive. After further analysis, the motor can be replaced appropriately. Therefore, this calculation method can provide a more accurate scientific basis for the technical transformation of power-saving engineering, and achieves the important purpose of accurately calculating the electrical balance.
Measurement of electric balance of other mechanical equipment a. Calculation of electric balance of forging machinery The calculation method of electric balance of forging machinery is basically the same as that of machine tool equipment, but the method of determining the fixed loss is somewhat different from the above method, and any hammer position is consumed. The effective power, and the fixed loss of the device is independent of the load, so the fixed loss value can be determined by the formula ΔPG=ΔP-ΔPC-ΔPH. Where: ΔP is the grid power (kW) consumed by the transmission under rated load; ΔPc is the drop hammer useful power (kW); ΔPH is the motor winding loss (kW) under rated conditions. b. Electrical balance measurement of mechanical devices such as fans, compressors, pumps, etc. The electrical balance measurement methods of such mechanical devices are basically the same as those of machine tools. Normally, the measured effective energy can be converted into the wind volume and wind pressure of the fan to understand what the fan is operating at, and its efficiency can be found from its operating characteristic curve. The electrical balance thus carried out can also be used as the basis for the technical transformation of power saving.
The electric balance calculation method is basically applicable to the electric balance calculation of all electric power drag device devices. The method is simple, clear and easy to implement. For the engineering and technical personnel engaged in mechanical design, after the preliminary design of the mechanical equipment system, immediately By performing the electric balance measurement, the correctness and rationality of the designed project can be checked. On this basis, the design project can be further optimized to obtain the most reasonable configuration.
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