Customer can choose VVVF control to control running speed, the energy saving performance is obvious. It can prolong product life and reduce the operation cost.
可选用变频驱动控制，根据客人流量自动控制运行速度，节能效果显著，提高设备的运行寿命，降低运行成本。
The energy-saving effect and rough calculation of AC VVVF inverter in ventilator load in practical industrical production were described.
论述了交流变频调速器在工业企业实际生产中用于通风机类负载时节能效果情况及节能费用图示估算方法。
But at the same time we should note that the impact of VVVF energy-saving effect of a number of factors, if blindly selected, is likely to backfire.
但同时应该引起注意的是，影响变频调速节能效果的因素很多，如果盲目选用，很可能事与愿违。
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