Saving the installation space and secondary loop cable, reducing the power waste of starting equipment, power wasteless. starting control is completed from starter according to the speed of motor.
节省安装空间和二次回路电缆，减少起动装置的功率消耗，节约了电能。
The secondary air booster is an air compressor which adopts a direct current motor as the power.
二级空气增压器为采用直流电机为动力的空气压缩机。
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