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cause analysis and preventive measures of phase failure operation of three-phase asynchronous motor

the three-phase asynchronous motor often burns out when it runs out of phase. the main reason is that the reverse sequence magnetic field produces large braking torque after one-phase power failure, which reduces the output torque of the motor. when the external load remains unchanged, the slip rate increases, and the current in the stator winding is much higher than that in normal operation, resulting in increased copper and iron consumption, resulting in the increase of motor temperature and burning out the stator winding.

maintenance and management measures of three-phase asynchronous motor in storage

the storage conditions of the motor shall be selected according to its protection grade and the characteristics of the suitable equipment to ensure that the installation size and the quality characteristics of the motor will not deteriorate during the storage of the motor.

on the control mode of three-phase asynchronous motor

control mode of three-phase asynchronous motor:1. direct start - the method is simple, the cost is low, and most motors with small capacity are started directly.2. step down starting of self coupling transformer - the advantage is that it can be directly controlled manually or automatically controlled by ac contactor. it is durable and low maintenance cost. it is suitable for all no-load and light load starting asynchronous motors.

what is the slip of three-phase asynchronous motor?

what is the slip of three-phase asynchronous motor? the driving torque exists only when the closing coil has induced current. the torque is determined by the current of the closed coil and exists only when the magnetic flux in the ring changes. at this time, there must be a speed difference between the closed coil and the rotating magnetic field.

what are the causes of overload of three-phase asynchronous motor?

although the operation of three-phase asynchronous motor is generally stable and the accident rate is small, it does not mean that there is no fault. if the load it drives exceeds the rated power of the motor, the motor will be overloaded.

what is the method to reduce the vibration of three-phase asynchronous motor?

the vibration of asynchronous motor is the focus of motor structure design at present. it is composed of electromagnetic vibration, mechanical vibration and gas vibration. electromagnetic vibration: the interaction of the magnetic field in the air gap of the motor generates electromagnetic force varying with time and space on the rotor and stator, causing the motor to vibrate.

what is the difference between permanent magnet motor and ordinary motor?

permanent magnet motor is a new type of motor which uses permanent magnet to establish permanent magnetic field. it has the advantages of compact structure, high reliability and high efficiency. compared with ordinary motor, it has the advantages of fast response, large starting torque and small operating current. for any motor, there is a certain qualitative relationship between no-load current and load current.

the grand ceremony of 2022 hengda motor annual meeting was successfully held

the song curls to bid farewell to the old year and dance to celebrate the new year.on the evening of january 28, 2022, the welcome party of wuxi hengda motor co., ltd. was successfully held.bid farewell to 2021, which has made great achievements, and usher in 2022, which is full of hope. in the past year, the industry fluctuated rapidly and the market competition was fierce. with the joint efforts of all employees, we overcame difficulties and obstacles all the way and achieved an impressive performance of 420 million. this is the result of our concerted efforts and unity.

what are the advantages of permanent magnet synchronous motor compared with ac asynchronous motor?

permanent magnet synchronous motor and ac asynchronous motor are often heard in the power system, and permanent magnet synchronous motor accounts for the vast majority in frequency. what are the differences between them, and what are their advantages and disadvantages?

understand variable frequency motor in one minute -- a brief description of the characteristics and advantages of variable frequency motor

hengda motor is committed to the optimization scheme of high temperature resistant permanent magnet motor in printing and dyeing industry

with the development of textile printing and dyeing machinery, higher requirements are put forward for the service conditions, performance and other indicators of the motor, especially the circulating fan of the printing and dyeing machinery. in the past, the hardness of the motor shaft, the high temperature resistance of the bearing and winding coil can not meet the requirements.

hengda variable frequency speed regulation ferrite assisted synchronous reluctance motor has been successfully developed

"carbon peak" and "carbon neutralization" have been with you for a year.with the development of economy, green, low-carbon and energy saving have become a melody to help the country save energy and reduce emission and reduce the use of non renewable resources. hengda motor has developed frequency conversion speed regulation ferrite assisted synchronous reluctance motor, which uses ferrite to replace rare earth materials, so as to fundamentally solve the use of rare earth materials.

hengda motor delivers ye3vp/ye4vp series high-efficiency low-voltage frequency conversion high-power motor solutions to customers

with the development of manufacturing industry, national planning and market economy, competition is becoming more and more fierce, and environmental protection is paid more and more attention; involving the upgrading of industries and products, it is imperative to improve the intelligent manufacturing of products,

hengda motor invested in high-precision permanent magnet synchronous motor rotor dynamic balance equipment to help improve the quality of the motor

with the development of economy, green, low-carbon and energy saving have become a melody. all industries are actively working to improve production capacity, reduce cost and increase efficiency and eliminate backward production capacity. therefore, rare earth permanent magnet synchronous motor has entered people's vision.

"national anti fraud, you and me" hengda anti fraud theme publicity activity

in order to further improve the prevention awareness of enterprise employees on the crime of telecom network fraud, curb the high incidence and frequent trend of telecom network fraud from the source, and protect the "money bag" of enterprise employees. recently, wuxi hengda motor co., ltd. actively responded to the government's call,

hengda motor delivers ytdd series servo permanent magnet direct drive motor solution for wire drawing machine customers

with high efficiency and energy saving becoming the development trend of the whole manufacturing industry, more and more manufacturing enterprise users have more efficient requirements for motors. at present, hengda motor has provided high-efficiency permanent magnet rare earth synchronous motor solutions for customers in textile, wire drawing, compressor,

hengda motor invested in high-precision machining equipment to help improve product quality

with the development of market economy, more and more customers pay more and more attention to the quality of products on the premise of pursuing production efficiency, and require the development of products with high specification and high quality; at present, hengda motor has been updated, eliminated and added year by year,

2021 shanghai international compressor and equipment exhibition

the annual 2021 shanghai international compressor and equipment exhibition was grandly opened in shanghai new international expo center (october 26-october 30, 2021), attracting more than 3000 well-known enterprises at home and abroad, with an exhibition area of 220000 square meters, a record high.

the first meeting of the second session of printing and dyeing machinery branch of china textile machinery association was successfully held

"on october 19, 2021, the first meeting of the second session of printing and dyeing machinery branch of china textile machinery association" was held in shanghai. leaders of china textile machinery association, china printing and dyeing industry association, china textile machinery association, and other industry associations and representatives of more than 100 industry enterprises attended the meeting

production and demand dialogue, find solutions and leapfrog! the annual meeting of spinning machinery branch of china textile machinery association and the joint meeting of yarn branch of china cotton textile industry association were held

"on september 27, 2021, the annual meeting of spinning machinery branch of china textile machinery association and the joint meeting of yarn branch of china cotton textile industry association" was held in qingdao, shandong province. gu ping, president of china textile machinery association, dong kuiyong, president of china cotton textile industry association,

jingwei intelligent company's 2021 supplier conference of "sharing · smart building the future toget

participate in jingwei intelligent supplier conference with the theme of "improving quality and ensuring delivery". visit the exhibition hall of jingwei history and development.the sales situation and the requirements and specific measures for the guaranteed delivery of hengda motor and fan motor chaired by jingwei procurement department with the theme of "guaranteed delivery".

2021 china international textile machinery exhibition and itma asia exhibition

2021 is the first year of the 14th five year plan and an important year for the textile industry to usher in a new round of development opportunities. china's textile machinery industry is entering a new growth cycle of multiple innovation. under such opportunities and background, as a grand event of the global textile machinery industry,

hengda motor won the title of the 23rd batch of management progress demonstration enterprises of chi

the award of "modern enterprise management demonstration project" organized and evaluated by china machinery industry enterprise management association in 2020 was announced recently, and hengda motor won the "management progress demonstration enterprise"!

2021 supplier conference of south pump division was successfully held ｜ hengda motor won the title o

with warm spring and beautiful weather, cicc environmental manufacturing division of the south issued an invitation to suppliers from all over the world to meet in renhe, hangzhou and hold the 2020 supplier conference with the theme of "sincere cooperation, hand in hand and win-win future". the meeting was mainly organized by the supply chain committee of nanfang pump co., ltd. and co organized by the four factories of nanfang pump co., ltd.

how to distinguish between variable frequency motor and ordinary motor?

do you know how the variable frequency motor works? principle of variable frequency motor

high efficiency motor is the key element of real "high efficiency", which must be mastered

connection and difference between high efficiency motor and ordinary motor

why is it not recommended that ordinary motors use frequency converters for speed regulation?

2019 european international textile machinery exhibition

from june 20 to 26, the international textile machinery exhibition (itma 2019) was grandly held in barcelona exhibition center, spain. the exhibition focuses on the innovative equipment and digital technology covering the whole industry chain under the theme of "industry 4.0" and sustainable development.