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without any failure, greatly reduced equipment maintenance workload and maintenance costs. According to the current motor long-term operating frequency 40 Hz, AC frequency converter governor primary side power supply current 230-250 a calculation, compared with the original direct operation of the AC motor can save 35% of the electricity cost calculated by 0.48 yuan (kwh) , 1.5 A can recover all AC variable frequency speed governor costs. In particular, when the power grid fluctuates, it can start again successfully and the process can not stop, which ensures continuous production and eliminates a great deal of loss of fuel and materials caused by the accident stop, which makes its advantages more outstanding and the direct and indirect economic benefits are very obvious. The KTI time delay relay is usually set to the given signal of the instrument. The starting process of the fan driven by AC variable frequency speed governor requires smoothness, the acceleration starts from 0, and the speed corresponding to the given speed signal within 305, and the speed is controlled by the wind pressure signal from the cracking furnace fed back by the instrument. The process requires the furnace pressure to be kept at a 50 PA. . When the air pressure in the furnace changes, the AC variable frequency governor automatically adjusts the rotating speed according to the instrument signal; when the air pressure is lower than the process requirement, the instrument gives a control signal to make the rotating speed of the fan decrease and the pressure in the furnace increase until the process requirement is met; otherwise, the Fan speed increases

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DI620

DI620由【廈門興銳嘉進出口有限公司】優(yōu)惠供應.