Vacuum contactor and its energy saving Cheng Hang Changfeng Group Hongguang Microwave Devices Co., Ltd., Pingliang 744000, Gansu, China Abstract Using vacuum contactors can save energy. This article from the vacuum contactor control circuit and DC electromagnetic system on both sides of the 1 compared to the outline of the application of vacuum contactor has been in China for a long time it has a strong ability to break off small, small, easy maintenance, noise, long life and other advantages. These advantages have been accepted by most users in China, and they have been generally popularized in flammable and explosive places. At the same time, due to the use of DC electromagnetic systems, vacuum contactors have energy-saving features. For this, there are still many opinions in this article from the vacuum contactor control loop and the electromagnetic system in two aspects of analysis, to explain, in the hope that people have more comprehensive and profound energy saving of the vacuum contactor, which for vacuum contact The use of the device, as well as the protection of the environment and save energy, are very necessary 2 control circuit of the vacuum contactor and the analysis of the vacuum contactor in the common control loop, the capacitor, 005 for the rectifier, 1 for the auxiliary switch Normally closed, 12 is the two series coils of the vacuum contactor electromagnetic system.
The operating state of the vacuum contactor is divided into two continuous states of suction and maintenance. The following first analyzes the control loops under two conditions. 21 control circuit of the vacuum contactor in the pull-in state and analysis of the control circuit of the vacuum contactor in the pull-in state, at this time, the current does not pass through the resistor and the pole tube, but is supplemented by the 5 rectifier diode; 992 electromagnetic coil, capacitor; 2, auxiliary switch normally closed terminal help switch normally closed terminal, after full-wave rectification, into the load pull-in state, the load in the circuit is only the vacuum contactor electromagnetic system coil, the voltage waveform 3, Set the resistance of the coil to be revenge. At this time, the voltage across the coil is 9 and the current flowing through the coil is 22. The control loop of the vacuum contactor in the maintaining state and the control loop of the analysis vacuum contactor in the maintaining state 4 In this case, the normally closed terminal of the auxiliary switch is disconnected, the current passes through the resistance and the transistor 0 after half-wave rectification, and then flows into the load maintaining state. In addition to the coil of the vacuum contactor electromagnetic system, the load in the circuit is also for him. At this time, the voltage across the coil is 45, the current flowing through the coil is 45, and +4, and 5, Rectifier; 12 electromagnetic coil; 0 capacitor; 2 phantom auxiliary switch normally closed terminal is called 15 viewing tube 12 Electromagnetic wire On the behalf of the resistance voltage, time, 23 compare the state of the two pull-in state line consumes the Tun energy =2 to do, maintain the state line consumes the Tun energy is, 2 = .45 and +, in the general case, and =253 Claw, therefore, 1 button 16 pieces, ie, 21=, 7, maintain state Compared to the state of attraction Energy saving 9 Hyun to 3 vacuum contactor Electromagnetic system and its analysis Ning contactor uses 1 flow electromagnetic system 1 stream Tuen system to pure iron As a core, its structure has a beat type, but also a spiral type but no matter what kind of form, because the current in the coil is a direct current, its size and small size will degenerate with time, the core deuterium magnet will not change, so No hysteresis and eddy current losses are produced, but also the AC electromagnetic system burns out due to overheating of the coils, and the noise is severe. Q4 Conclusions The hollow contactor is an energy-saving real contactor. Energy saving is a control loop from two aspects. The current of the system is changed from 0 = when it is pulled to when it is maintained, = 45 +, and the energy saving is greater than 9 phenol. Since the vacuum contactor is maintained for a long time, its energy saving effect is obvious; it is the vacuum contactor DC Electromagnetic system. The losses in the iron core and the sub-magnetic ring of the cadastral system are 90. Therefore, the long-term use of the vacuum contactor will produce good economic benefits. 1 Fang Hongfa, chief editor. , Piezoelectric 1. Mechanical Industry Press.
2 Wang Junwei Song Shuqing. Electronic Circuits 1. The Electronic Industry Press is engaged in the research and development of vacuum appliances. On page 23 3 Jia Jia's series products, these circuit breakers, when equipped with corresponding communication components, can transmit and receive some data. Based on the conclusion of the communication function 4, based on the 801 team fieldbus, the test management and monitoring system can provide a friendly man-machine interface. Easy to operate. And powerful data collection and archiving processing and alarm reporting functions. Can be found in time to diagnose the fault. And help manage the decline. Greatly reduce the incidence of failure and maintenance, Mr. Yang Xianhui. Wei Qingfu, Fieldbus and its application. Tsinghua University Press, 1999 107 Fieldbus Calling 8 Technical Handbook 1 Beijing China Electromechanical Technology Application Association Fieldbus Professional Committee 4 Meeting.
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