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The mills electric power distribution design and dynamic choice

When possible, transformer should be installed in the use of power equipment as close as possible position. The longer the cables, the greater the power loss, this is a special needs to pay attention. And because the current copper prices high, a cross-sectional cable is too big, can also cause the production cost is high.

The choice of the motor is another important factor, in consideration of the electricity consumption in the process, the quality of the motor and start performance is two must factors to consider, operation time and circuit of electric power consumption and produce certain shadow ring, choose good motor for energy saving is very important.

At present Y series motor is domestic good energy-saving electric motor, has been widely used in powder industry. In practical applications, already after many maintenance is still can use the motor of the problem is often reflects the power shortage. This is because each bag line replacement motor, lead to the iron core is damaged. In this case, often easily be mistaken for should be replaced high-power electric motor, this causes the rising costs of products processing.

Most current induction motor manufacturing enterprise has greatly improved the performance of their products, the efficiency of the new motor will generally not less than 90%. Efficient energy-saving motor in operation, can maximum limit keep a plan in within the scope of the operation. The motor in the rated full load under the working conditions, internal friction minimum, the efficiency is greatest; But in low load, the efficiency is very low. In accordance with the following rated, efficient and energy-saving efficiency of the motor than ordinary electric machine can improve 2%-10%.

Although energy efficient motor price is on the high side, but in practical applications, because motor start machine start-up performance are optimized, and motor coil to stop the phase in mobile, a frequency converter to the improvement and the efficiency of electric machine that is almost 100%. Through improving the whole workshop of power utilization efficiency, will reduce the power factor compensation for the combination of the cost of the capacitor, so will reduce the cost of power useless.

 

Hits:  UpdateTime:2012-07-13 08:37:28  【Printing】  【Close

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