Function of Air Switch Interlock in Equipment Operation
Release time:
2020-12-01
air switch interlock in equipment operation
air switch is a very important component in low-voltage distribution network and electric drive system. It integrates control and various protection functions. In addition to completing contact and breaking circuits, it can also protect short circuits, severe overload and undervoltage of circuits or electrical equipment. At the same time, if we make a reasonable combination of interlocking, we can also protect the equipment and system from the lack of phase, misdivision and leakage of the air switch in operation. In
operation, the protection of the motor by the phase-missing interlock of the air switch
2017 , in view of the frequent burning of the motor due to the phase-missing in the packaging lane of daye peak cement company, we decided to carry out the air switch interlock after comprehensive analysis, use three 220V intermediate relays to split the three phases at the outlet end of the air switch, and then connect the three opening points in series with each other and then in series to the control loop, the loading lane after interlocking has not burned the motor due to lack of phase so far. Protection of Equipment and System by Misdividing Interlock of Air Switch during
Operation
In 2018 , the air switch of the main motor transformer of Daye Peak Kiln was broken due to the burning of the cooling fan, resulting in excessive temperature rise of the transformer. After analyzing the reasons, we installed a 220V intermediate relay at the outlet end of the air switch of the control power supply, and then tripped the transformer to interlock and connect it to the relay closing point. After interlocking, the transformer is protected in all directions. On October 28, 2020, the limestone yard stacker due to the hydraulic station air switch misdivision caused the pile back pressure dead, to find out the reason after we use the intermediate relay for combination interlocking, and then the hydraulic station comprehensive fault interlocking and connected to the relay closing point, interlocking after the stacking system for a good protection.
During operation, the leakage and interlocking of the air switch protects the equipment
2017 . Because the auxiliary transmission of the finished 3# cake hoist is of double drive structure, there is a drawer cabinet empty during power transmission, resulting in stand-alone operation. After finding out the reason, we interlocked the air switches of the two drawer cabinets with each other and connected them in series to the control circuit, so that the equipment cannot be turned on no matter which air switch is not closed, and no matter which air switch trips and the other trips at the same time. So far, the interlocking has effectively protected the equipment.
It can be seen from the above that the reasonable combination of air switch interlocking is used flexibly in the low-voltage distribution network and electric drive system to protect the equipment well, which fully reflects the importance of air switch interlocking in the operation of the equipment. (Shi Zhangliang)
More information
Peak health marketing and a new "play"
Building a New System, Flattening Management, Spike Health Marketing, New "Way to Work" On February 17, Spike Health Technology Company held a sales meeting to integrate and adjust the construction of a new marketing system and deploy and implement the 2017 sales work. Chen Daiyou, general manager of Health Technology Company, carefully explained and answered the marketing system construction and sales management assessment methods at the meeting, and reached a consensus on unifying thinking. The sales business of Health Technology Company involves three categories: health care products, plant extracts and Chinese herbal pieces. The product attributes and categories are different, and the product sales channels are diversified. In order to facilitate market expansion and adapt to the rapid response to market changes, the Company focuses on key products, key channels and key markets, adjusts the original business model, unifies all sales businesses of the Company, establishes a marketing center, and centralizes and unifies flat management. At the meeting, the Health Technology Company issued the "2017 Sales Management Assessment Measures", which takes sales performance as the leading factor, defines the sales staff's business expenses and market expansion support policies, implements quarterly and annual assessment of sales targets, and directly links the assessment of the progress of sales staff's target tasks with monthly income. After two-way selection, adjustment and implementation of sales positions and target tasks, all sales staff of Health Technology Company have signed a sales economic responsibility system. Chen Daiyou hopes that marketers will build confidence to meet the challenges and grow and progress together with the enterprise. At the same time, he said that the health technology company will focus on strengthening the construction and cultivation of the sales team, and carry out training, learning and experience sharing in various ways, so as to improve the business ability and level of the sales team. (Spike Health)
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On January 23, the group company held a special working meeting to summarize the safety and environmental protection work in 2016 and make arrangements for the work in the new year. General manager Yu Jianhong pointed out at the meeting that hidden dangers are accidents, accidents should be assessed, and safety and environmental protection work should continue to be carried out with a "zero tolerance" attitude. At the meeting, Chen Tianci, assistant to the general manager of the group company and manager of the audit performance management department, summarized the safety and environmental protection work in 2016 from the aspects of the completion of the safety and environmental protection responsibility system objectives, self-examination and self-correction of illegal operations, and the establishment of safety and environmental protection accident-free factories, analyzed the problems existing in the work, and put forward the safety and environmental protection work plan for 2017 in a targeted manner. Jiang Xiaomeng, chairman of the group company, stressed at the meeting that the work of safety and environmental protection is endless and must be carried out unremittingly. All enterprises should focus on safety and environmental protection management in a planned and focused manner according to the characteristics of their respective industries and industries, seasonal changes, and national policy adjustments. It is more important to establish awareness than inspection. It is necessary to strengthen safety and environmental protection education and improve the safety and environmental protection awareness and related work skills of all employees. Conduct in-depth pre-inspection and strict post-assessment to achieve full management and comprehensive prevention, and realize the overall improvement of enterprise safety and environmental protection. At the meeting, Jiang Xiaomeng, on behalf of the group company, signed the 2017 safety and environmental protection work responsibility letter with various professional companies and directly affiliated enterprises. In his concluding speech, Yu Jianhong, general manager of the group company, pointed out that safety runs through the development of the enterprise, and safety and environmental protection cannot be separated from production and operation. The two promote each other and complement each other, and managers at all levels must have a deep level of this.
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"Spike" Cement Becomes Yunnan Famous Brand Product
News from our newspaper At the beginning of the new year, good news came from Yunnan Jianfeng Cement Company. The "Jianfeng" brand cement successfully passed the examination and approval and won the title of "Yunnan Famous Brand Product. Since it was put into production in 2013, the "Jianfeng" brand cement produced by Yunnan Jianfeng has won good sales performance and reputation in the southwest Yunnan market, and its popularity and brand influence have been continuously improved. Therefore, Yunnan Jianfeng started to declare "famous brand products" in 2016. After preliminary data preparation, preliminary examination by Pu'er Municipal Bureau of Quality and Technical Supervision, expert review by Yunnan Provincial Bureau of Quality and Technical Supervision and on-site verification, Yunnan Provincial Bureau of Quality and Technical Supervision finally passed the examination and approval of "Yunnan Famous Brand Products" organized by Yunnan Provincial Strategic Leading Group for Implementing Brand and Strong Quality Province in 2017. The acquisition of this honorary title will further enhance the market competitiveness of Jianfeng Cement in southwestern Yunnan, and also increase the popularity of Yunnan Jianfeng, laying a more solid foundation for further market development in the future. (Li Chun)
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