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山东自动门直流电机启动需要注意哪些?

来源:http://www.jnmcd.com 发布时间:2019-03-29 浏览:
1、直流电机的接线
1. Wiring of DC motor
发电厂普通采取并激式,其电枢端子为H1和H2并激式绕组的端子为B1和B2,它的接线方式是H1并接B1后接直流电源的正极,H2并接B2后接直流电源的负极。
Parallel excitation is commonly used in power plants. The armature terminals of H1 and H2 parallel excitation windings are B1 and B2. Its connection mode is that H1 is connected with the positive pole of B1 DC power supply and H2 is connected with the negative pole of B2 DC power supply.
2、降低启动电流
2. Reducing Start-up Current
普通除了小于4KW的的器械能够直接起动外,一切的设备起动都应把起动电流降到电机的额定电流的2倍以下。要降低起动电流,普通要在电机起动时,在电枢回路内,串入起动电阻来限制起动电流或在电机起动时,降低电机的起动电压来限制起动电流。由于在电枢回路中串入起动电阻,运用设备简单,经济牢靠,所以被普遍采用。
In general, except for devices less than 4KW which can start directly, the starting current of all devices should be reduced to less than 2 times of the rated current of the motor. In order to reduce the starting current, the starting resistance should be connected in series to limit the starting current or reduce the starting voltage to limit the starting current when the motor starts. Because starting resistance is connected in series in armature circuit, the equipment is simple and economical, so it is widely used.
山东自动门电机
3、直流接触器的线圈问题
3. Coil Problem of DC Contactor
关于运转用直流接触器,其接触器线圈应是可长期运转的。而关于CZ0系列接触器来说,都是短时间运转的,因而当做长时间运转接触器时,其线圈不能烧毁,所以,在起动完毕后,应给运转接触器串入一个约150W,1000Ω的电阻,避免线圈烧毁事故。
As for the DC contactor used in operation, its contactor coil should be able to operate for a long time. As for CZ0 series contactors, they all run for a short time, so the coils can not be burned when they are used for a long time. Therefore, after starting, a resistance of about 150 W, 1000 Omega should be added to the running contactors to avoid the coil burning accident.
4、直流电流的丈量
4. Measurement of DC Current
关于它的丈量,普通采用分流器式,在主回路串入100A,75mv的分流器,分流器的正负极接75mv的0∽100A电流表。
As for its measurement, the shunt type is usually adopted. A 100A, 75mV shunt is connected in series in the main circuit. The positive and negative poles of the shunt are connected with a 0_100A ammeter of 75mv.
5、具有串电阻降低起动电流的直流电机起动接线原理接线图。
5. DC motor starting wiring principle wiring diagram with series resistance to reduce starting current.
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The splendid content of this article is compiled by Shandong Automatic Door Motor. Our company insists on the win-win concept of honesty and cooperation to provide you with perfect service. Welcome to http://www.jnmcd.com.
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