Energy saving conditions

Energy-saving equipment technical conditions To draft This standard by the shandong province economic and trade commission, the bureau of quality and technical supervision of shandong province is put forward. This standard by the shandong energy standardization technical committee to review. motor spare parts This www.dongfeng-motor.com standard drafting unit: shandong province product quality supervision and inspection institute. Main drafter of this standard: Dong Jiang, Carolyn lau, Wang Feng, XinFeng, Lu Jinduo, Gao Jing, John rambo, Chen Hengliang Lin. Standard number: DB37 / T728-2007 The scope of This standard specifies the conditions of use of motor energy saving device, technical requirements, test methods, inspection rule, marks, packaging, transport and storage. This standard applies to rated voltage 660 v and below and rated current under 600 a and motor energy saving devices. Terms and definitions Energy-saving device: 1, the motor used in electric three phase asynchronous motor motor before input, control motor energy saving operation of electrical equipment (not including the inverter). 2, www.facebook.com/guohong.trading power saving rate in the same condition, the same time, the use of motor energy saving devices save electrical energy (kW · h) and not to use motor energy saving devices use electricity (kW · h) ratio, expressed as percentage. Conditions of use 1) : the elevation 1000 meters, and the following; 2) ambient temperature: 0 ℃ ~ + 40 ℃. 3) relative humidity: 90% or less (+ 25 ℃); 4) no serious damage to insulation and corrosion of metal in the air gas, conductive dust and flammable and explosive medium.

The application of soft start the motor?

Widely used in coking production process equipment such as fan, water pump, and belt conveyor, generally need to directly under overloading starting motor, starting current is as high as 8 =; Times, power electric fan motor parts supply network voltage drop is too large, to be the impact of the driven equipment and control equipment failure rate is high. To solve the problem of high power motor start-up, generally USES the frequency-sensitive rheostat, since the lotus root transformer, B C % perkins diesel generator conversion and yanbian triangle startup mode, etc. But the traditional way of step-down start widespread starting equipment complex, small starting current and starting torque, etc. And the operation of the protection in motor, there are imperfect or insensitive. In recent years, with the development of power electronics technology and its related devices, three-phase asynchronous motor soft start technology has become increasingly perfect, and has been widely used. Soft starter is composed of microprocessor and high power thyristor, with microprocessor control thyristor conduction Angle, to control the output voltage. Therefore, the soft starter is actually can automatically control the step-down starter. Because you can adjust the output voltage and current closed-loop control, so be better than the series resistance and autotransformer such as traditional step-down starting way. 

And the failure rate is higher, the startup current impact on motor is extremely adverse. 3, soft starter start Soft starter starts, not only the operation is simple, and can be obtained from the motor initial starting torque, starting voltage can be increased. Selects the kick start function, can provide big promotion for motor torque, in order to overcome the inertia of load and quickly complete the boot process, the actual starting time of 261. By drum machine cold section in the practical application showed that the circulating water pump motor soft start technology not only can provide flexible start mode and excellent start features, can also provide soft start, soft start of belt optional kick start, current-limiting starting, double ramp up and started full pressure, etc. In addition, can provide various operations of protection, fault conditions directly read operation parameters www.dongfeng-motor.com of the motor, fault self-diagnosis function, with stepless regulating switch to eliminate the system of contact. Humanized menu interface can easily access or modify the parameters, to achieve centralized control through additional communication network interface. Also can effectively reduce the startup of mechanical stress, reduce the impact to mechanical transmission components.

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