鲁宁输油管线各中间泵站2号、3号低压室,是交流接触器集中控制的场所。运行噪声大,干扰值班人员的正常巡视工作。又由于其铁芯损失较大,设备温度较高,缩短了使用寿命,增加了维修工作量,浪费了电能。 针对上述情况,在60A以上交流接触器上安装使用了“无声运行”器。原理见图 Lu Ning pipeline middle of the pumping station on the 2nd, No. 3 low pressure chamber, is the exchange contactor centralized control of the place. Running noise, interfere with the normal inspection work on duty. And because of its larger core loss, higher equipment temperatures, shortened life expectancy, increased maintenance workload, waste of energy. In view of the above situation, the “silent operation” device is installed on the AC contactor above 60A. See the principle