What is a synchronous motor?

Motor is a kind of equipment that converts electrical energy into mechanical energy. It uses the electrified coil (stator winding) to generate a rotating magnetic fi

Motor is a kind of equipment that converts electrical energy into mechanical energy. It uses the electrified coil (stator winding) to generate a rotating magnetic field, which acts on the rotor (such as squirrel-cage closed aluminum frame) to form a magnetoelectric rotating torque. According to different power sources, motors are divided into DC motors and AC motors. The motors in the power system are mostly AC motors, which can be synchronous motors or asynchronous motors (the stator magnetic field speed of the motor is not synchronized with the rotor speed). The motor is mainly composed of stator and rotor, and the direction of electrified conductor in magnetic field is related to the direction of current and magnetic induction line (magnetic field direction). The working principle of the motor is that the magnetic field acts on the current to make the motor rotate.

Motor model is a kind of code which is convenient for users, designers, manufacturers and other departments to carry out business contact and simplify the description of product name, specification and model in technical documents. The following is an introduction to the meaning of motor models and other information.

First, the composition and significance of the motor model

It consists of four parts: motor type code, motor characteristic code, design serial number and excitation mode code.

1, the model code is a Chinese phonetic alphabet used to represent various types of motors.

For example:

Asynchronous motor y synchronous motor t

Synchronous generator TF DC motor z

Dc generator ZF

2. The characteristic code is used to indicate the performance, structure or use of the motor, and it is also expressed by Chinese phonetic alphabet.

For example:

The explosion-proof type is represented by B, and YT is used for y B axial flow fan.

Electromagnetic braking YEJ variable frequency speed regulation YVP

YZD is a multi-speed YD crane, etc.

3. The design serial number refers to the design sequence of motor products, expressed in Arabic numerals. For the products designed for the first time, the design serial number is not marked, and the products derived from this series of products are marked according to the design order.

For example: Y2 YB2

4. The excitation mode code is represented by letters, S represents the third harmonic, J represents the thyristor, and X represents the compound excitation.

For example: y2-160m1–8.

Y: model, indicating asynchronous motor;

2: design serial number, "2" means the product whose design is improved on the basis of the first time;

160: the center height is the height from the center of the axle to the plane of the frame;

M 1: Frame length specification, where m is medium-sized, and footnote "2" is the second specification of M-shaped iron core, which is longer than "1" type iron core.

8: Number of poles, and "8" refers to an 8-pole motor.

For example: y 630-10/1180.

Y stands for asynchronous motor;

630 means power 630KW.

10 pole, stator core outer diameter 1 180MM.

Second, the specification code is mainly expressed by center height, frame length, core length and pole number.

1, the center height refers to the height from the motor axis to the bottom corner of the frame; According to the different height of the center, the motor can be divided into four types: large, medium, small and miniature, of which the center height is higher.

H belongs to micromotor when it is 45mm~7 1mm;

H is a small motor when it is 80mm~3 15mm;

H is a medium-sized motor from 355 mm to 630 mm;

H is a large motor over 630 mm

2. The frame length is expressed in international letters:

Short support

M- intermediate frame

L- long base

3. The length of the iron core from long to short is represented by Arabic numerals 1, 2, 3, 4,,, respectively.

4. The number of poles is divided into 2 poles, 4 poles, 6 poles and 8 poles.

Three, the special environmental code has the following provisions:

Special environment code

"Gao" was originally used as G.

H for ships ("sea")

W stands for "outside" of the family

F is used to prevent "corrosion" in chemical industry.

Tropical t

TH is used in hot and humid areas.

TA in arid tropical areas

Fourthly, the supplementary specification is only applicable to motors with supplementary requirements.

For example:

The motor with product model YB2- 132S-4 H has the following meanings:

Y: product model code, indicating asynchronous motor;

B: product characteristic code, indicating flameproof type;

2: Product design serial number, indicating secondary design;

132: the center of the motor is high, indicating that the distance from the shaft center to the ground is132 mm;

S: motor base length, expressed by short base;

4: the number of poles, indicating a 4-pole motor;

H: Special environment code, indicating marine motor.

Through the detailed introduction of the motor model above, I believe that after seeing the product model, we can know the type, characteristics, design serial number, specifications and application environment of the motor.

Recently, the "20 19 First China Electric Power Purchasing and Trading Conference" hosted by Dianhu. com is in full swing. More and more enterprises are signing up to fight the first "war" in spring and win more high-quality customers for 20 19!

As the leading power B2B platform in China, Dianhu.com holds nearly 100 offline resource meetings every year, with at least 150 people and at most 1000 people. So far, more than 20 procurement conferences have been held, which are very popular!

We can't help wondering: Why is the "20 19 First China Electric Power Purchasing Fair" still so popular? (Held in Nanjing on April 65438, 2002)

Investigate its reason, the electric tiger network summarizes the following five aspects:

1, with clear purpose

Constantly promoting the upgrading of the electrical industry is the mission of the electric tiger network. Electric Tiger Network will use the Internet platform and ecological resources to help more buyers and suppliers achieve all-round cooperation, empower partners, and create a better, more efficient, more transparent and smarter service system for the whole electrical equipment and materials industry.

Step 2 focus on the theme

Give up rhetoric and return to simplicity. Each meeting will invite domestic well-known experts and direct buyers with actual order plans and needs to discuss the topic around the order according to the theme.

3. In-depth topics

Most of the speeches of the forum guests are 15-20 minutes, and the buyers simply and clearly introduce the order demand and the requirements for suppliers; Suppliers introduce enterprises and advantages; Industry experts do analysis of industry subversion and grounding gas.

4. Participation of well-known enterprises

Well-known enterprises at home and abroad actively participate in procurement and management exchanges, which are highly complementary.

5, the harvest is different

For manufacturing enterprises:

1, low-cost access to interested customers

2. Expand the influence of enterprises.

3. Understand peer information

For buyers:

1, improve the supplier base and introduce a number of first-class suppliers at home and abroad;

2. Understand the new products and technologies on the market.

Generally speaking, no matter what kind of meeting, as long as it meets the needs of customers, it is successful.

The "20 19 First China Electric Power Purchasing and Trading Conference" starts from the background of procurement pain points and market bottlenecks, and combines the current domestic procurement situation, not seeking lofty topics, but seeking to effectively solve the procurement pain points and market bottlenecks of enterprises, and holding a practical, efficient and practical annual procurement event.

This meeting includes three topics:

1, real estate/urban construction/mining and other direct user procurement specials;

2, power/energy/industrial and mining installation general contracting company, design institute procurement special;

3, electrical equipment factory materials/accessories, accessories procurement special.

I really want to attend. Do you have any wood? This meeting will be held in Nanjing on April 12. At present, it is in the crazy registration stage, so get started quickly!

Up to now, more than 300 enterprises have registered, including power companies, real estate/urban construction/energy companies, power installation, power complete sets, transformers, electrical materials and other enterprises. This procurement fair will use the Internet platform and ecological resources to help more buyers and suppliers achieve all-round cooperation, empower partners, and create a better, more efficient, more transparent and smarter service system for the whole electrical equipment and materials industry.

Let's give you a little spoiler first. The following enterprises have participated. Why don't you sign up quickly?

1, Jiangsu Construction Engineering Group Co., Ltd.

Jiangsu Construction Engineering Group Co., Ltd. was established on 1989 with the approval of Jiangsu Provincial People's Government. The Ministry of Housing and Urban-Rural Development has approved it as a special qualification for general contracting of housing construction projects. At the same time, it also has the qualifications of municipal public works general contracting, electromechanical installation engineering general contracting, foundation and foundation engineering general contracting, architectural decoration engineering general contracting, steel structure engineering general contracting, electromechanical equipment installation engineering general contracting and fire control facilities engineering general contracting. Approved by the Ministry of Commerce, it has the qualification of A-level implementation enterprise for foreign contracted projects, foreign labor export and foreign aid complete projects. It has the comprehensive construction ability to undertake large and medium-sized projects such as high-rise buildings, large-scale industrial workshops, large-scale public facilities construction projects, advanced decoration, large-scale municipal projects, environmental garden projects, and electromechanical equipment installation.

2. Nanjing Jiangning Urban Construction Group Co., Ltd.

Nanjing Jiangning Urban Construction Group Co., Ltd. (hereinafter referred to as "Jiangning Urban Construction Group") was established in February 201kloc-0/65438, and is a state-owned enterprise group directly under the Jiangning District Government. The Group has 65,438+00 holding subsidiaries, including Dayu Water Conservancy, Tang Cheng Garden, Leheng Property, Lecheng Development and Lin Le Commercial Management, and two member units, Jiangning Water Group and Jiangning China Resources Gas. It is a comprehensive urban operation service provider integrating urban construction, operation and maintenance and development.

Since its establishment, the group has built more than 200 government investment projects with a total investment of more than 35 billion yuan. By the end of 20 18, the total assets of the group had exceeded 40 billion yuan, and it was an enterprise with AA+ main credit rating, and won the honors of "Worker Pioneer", "ankang cup Competition Award" and "Youth Civilization" successively. Strive to become a "valuable urban construction investment operation and maintenance service provider".

3. Red Phase Limited

Hongxiang Co., Ltd. (stock code: 300427) is a state-level high-tech enterprise, which has been committed to the research and application of power system condition-based maintenance technology for a long time and can provide customers with comprehensive solutions for power system condition-based maintenance and intelligent operation. With the advantages of technology and brand, the company has a leading market share and a high reputation in the market segment of power equipment condition maintenance industry.

The company always regards technological innovation and service marketing as the foundation of development, and insists on investing a lot of manpower and material resources in the research and development of new products and technologies every year. Product production bases and technology research institutes have been set up in Australia and China, which have acquired the international cutting-edge information technology, constantly innovated, provided high-quality consulting, products and services for global power customers, and continuously introduced a number of products with international leading technologies.

Jiangsu sumeida group co., ltd

Jiangsu Sumeida Group Co., Ltd. (Sumeida Group) was established in 1978 and is an important member of China Machinery Industry Group Co., Ltd. (SINOMACH). SINOMACH is an important state-owned backbone enterprise directly managed by the central government. In 20 17, SINOMACH ranked 256th among the top 500 enterprises in the world.

5. Nanjing Architectural Design and Research Institute Co., Ltd.

Nanjing Architectural Design and Research Institute Co., Ltd., formerly known as Nanjing Architectural Design and Research Institute, was founded in 1956, and is a national first-class design institute in the construction industry (construction engineering). At the end of 2003, it was restructured into a limited liability company with the approval of Nanjing Municipal People's Government. The company has strong design and scientific research strength, advanced and sophisticated technology and equipment. By the end of 20 17 and 12, * * had 385 employees, including 35 professional technicians, including 250 senior professional technicians. Our company has not only "333" academic leaders in Jiangsu Province and experts who enjoy government subsidies in the State Council, but also high-quality academic talents such as doctors and masters. Among them, there are 23 professor-level senior architects (engineers), 92 senior architects (engineers) and 29 national first-class registered architects; There are 45 registered structural engineers at the national level; There are 25 registered public equipment engineers at the national level; There are 1 1 national registered consulting engineers.

6. China Resources Land Limited

China Resources Land Co., Ltd. (company abbreviation: China Resources Land, stock code HK 1 109) is the flagship of real estate business of China Resources Group, a fortune 500 enterprise in the world, and also one of the most powerful comprehensive real estate developers in China. Its main business includes real estate development, commercial real estate development and operation, and property services. By the end of 20 17, the company had more than 30,000 employees and total assets of HK$ 574.6 billion, and had settled in 62 cities at home and abroad with more than 240 development projects.

7. Shanghai Urban Architecture Design Co., Ltd..

Shanghai Urban Architecture Design Co., Ltd. was established on1982,2001and transformed into a mixed-ownership enterprise. The company has a number of qualifications, such as Grade A in architectural engineering design, Grade B in urban and rural planning, Grade B in landscape design and Grade B in special design of pressure pipelines, and its business scope includes architectural design, planning design, interior design, landscape design, curtain wall design and corresponding business planning consulting services.

The company ranks among the top 100 survey and design industries in China, the top 20 survey and design industries in Shanghai, and an advanced design enterprise in China, and has won many national excellent design awards in the design industry. The company has been awarded the honorary title of 3A-class "abiding by contracts and honoring credit" by Shanghai Administration for Industry and Commerce for many years, and passed the ISO900 1:2000 international quality standard certification.

The company has nearly 500 professional designers, who can provide our customers with one-stop services in the whole process of pre-project consultation, scheme design, initial expansion design, construction drawing design and post-cooperation The types of projects completed by the company cover residences, businesses, offices, hotels, hospitals, schools, data centers, industrial buildings, etc. The design projects cover nearly 30 administrative provinces and regions in China. In recent years, the company's annual design sales are more than 300 million yuan, and continue to maintain rapid growth.

Lang Kun Smart Technology Co., Ltd.

Lang Kun, founded in 1999, is a leading overall solution provider for intelligent industry in China. Adhering to the business philosophy of "connection, * * * enjoyment, integration and ecology", the company continued to innovate and open cooperation, and built a full-process and full-life service system of "management consulting, solutions and products, IT operation and maintenance services and IT supervision services" in the field of "smart factory, smart park and smart city".

9. Jilin Aoqi Electromechanical Group Co., Ltd..

Jilin Aoqi Electromechanical Group Co., Ltd., formerly known as Changchun Dongda Electromechanical Equipment Co., Ltd., was founded in 1992. After more than 20 years' development, it has become the business partner of internationally renowned electric companies such as Schneider Electric (China) Investment Co., Ltd., ABB (China) Co., Ltd. and Siemens (China) Co., Ltd., and Aoqi Group has become one of the well-known domestic enterprises, with various economic and technical indicators ranking in the forefront of the same industry for many years, with customers distributed all over the country.

Aoqi Group is an enterprise specializing in the research, development, production and sales of primary and secondary equipment in power system. While insisting on expanding and strengthening the main business, we also vigorously develop civil electromechanical, environmental protection, anti-corrosion engineering, external wall insulation, foreign trade, education and other undertakings. It is one of the comprehensive electrical enterprise groups with the most complete products, the best quality, the strongest supporting capacity and the largest operating scale in the whole industry. He has won many national technology patents and provincial awards. Over the past 20 years, it has provided services 150 person-times to key national projects and outstanding enterprises and institutions such as China FAW Group and Yatai Group (60088 1. 0 1). SH), China Shipping Real Estate (00688. HK), Vanke Real Estate (000002. SZ) and CNR (60 1299. Shh).

10, Hubei Wanghua Electric Power Engineering Co., Ltd.

Hubei Wanghua Electric Power Engineering Co., Ltd. was established in April, 20 10. It is a high-tech enterprise engaged in new energy, electric power engineering design, construction, general contracting and new product research and development, with a registered capital of RMB100000, and is a wholly-owned subsidiary of Gao Chang High Voltage Switch Group Co., Ltd. (stock code: 002452). The company has Grade A qualification for power transmission and transformation engineering design, Grade B qualification for new energy power generation, Grade II qualification for power transmission and transformation engineering contracting, Grade II qualification for power engineering contracting, Grade III qualification for maintenance and testing, and Grade C qualification for engineering consulting. The company's business scope mainly includes: power industry (power transmission and transformation engineering, transformation engineering) engineering design, general contracting grade A; Power industry engineering design and general contracting Grade B (new energy power generation); Engineering consultation; Power transmission and transformation project construction level II; Design, construction, consultation and contracting of distribution network engineering and civil engineering; Construction and operation of distribution and power grid; Smart grid and microgrid construction; Production and sales of R&D power new technology products; Sales of complete sets of power equipment and materials.

1 1, Jiangsu Shangshang Cable Group Co., Ltd.

Jiangsu Shangshang Cable Group was established in 1967, and has a nationally recognized enterprise technology center and a postdoctoral research center. Shangshang Cable won the first place in the first "Most Competitive Enterprise in China Cable Industry", the first in China and the seventh in the world as a global insulated cable enterprise. In 20 18 years, the sales of enterprises exceeded 20 billion yuan. The enterprise also won the "Oscar" of China industry-"China Industry Award" and the second and third "China Quality Award Nomination Award". Chairman Ding was awarded "Honesty Star" by Publicity Department of the Communist Party of China and the National Development and Reform Commission.

Due to the limited space, the content of this issue is spoiled here first. If you want to know more spoilers, please pay attention to the micro-signal of Dianhu. If you are still wandering, look at these buyers and suppliers. They have time and leisure to watch. If you don't sign up for the breakpoint continuation, experience it yourself. As the saying goes, reading thousands of books is better than taking Wan Li Road, and watching others take multiple roads is better than taking one step by yourself.

For the sponsorship and participation of the conference, please contact the Organizing Committee:

Manager Dou, 15895895073

Shao, 185 12523785

Manager Xu, 13382789005

Manager Zhang, 13382789006

Manager Yan,18994110620

Identify applets and register now.

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