Motor model is a code that is convenient for the use, design, manufacturing and other departments to conduct business contacts and simplify the description of product name, specification, type, etc. in technical documents. Next, we will introduce the meaning of motor model and other information.

1、 Motor model composition and meaning

Type code, motor feature code, design serial number and excitation mode code are composed of four sections in sequence.

1. The type code is the 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 represents the performance, structure or purpose of the motor, and is also represented by Chinese phonetic alphabet.

For example, the explosion-proof type uses B to represent Yb, and YT is used on the axial fan

Electromagnetic braking YEJ variable frequency variable speed YVP

YZD for variable speed YD crane, etc.

3. Design serial number refers to the sequence of motor product design, expressed in Arabic numerals. For the products designed for the first time, the design serial number is not marked, and the products derived from the series products are marked in the order of design. For example: Y2 YB2

4. The excitation mode codes are represented by letters, s represents the third harmonic, J represents the thyristor, and X represents the phase complex excitation.

For example: y2-- 160 M1 – 8

Y: Model, indicating asynchronous motor;

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

160: center height, which is the height from the shaft center to the plane of the base;

M1: base length specification, M is medium, in which footnote "2" is the second specification of M-type iron core, and "2" type iron core is longer than "1" type iron core.

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

For example: y 630-10 /1180

Y refers to asynchronous motor;

630 means power 630kw;

10 pole, stator core outer diameter 1180mm.

2、 The specification code is mainly expressed by center height, base length, core length and pole number

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

H in 45mm~71mm belongs to micro motor;

Small motors with h of 80mm~315mm;

H in 355mm~630mm belongs to medium-sized motor;

H above 630mm is a large motor.

2. The length of the engine base is indicated by international common letters: S - short engine base

M - middle engine base

L - long base

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

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

3、 The special environment code has the following provisions:

special environment

"High" original G

H for ship ("sea")

Household "external" W

F for chemical anti-corrosion

Tropical t

Th for damp hot zone

TA for dry tropics

4、 The supplementary code is only applicable to motors with supplementary requirements

For example: the meaning of each code of the motor with the product model of yb2-132s-4 h is:

Y: Product type code, indicating asynchronous motor;

B: Product feature code, indicating flameproof type;

2: Product design serial number, indicating the second design;

132: the center height of the motor indicates that the distance from the axis to the ground is 132 mm;

S: Length of motor base, expressed as short base;

4: Number of poles, indicating 4-pole motor;

H: Special environment code, indicating marine motor.

Through the detailed introduction of the motor model above, we believe that we can know the type, characteristics, design serial number, motor specification and the environment in which it is used when we see the product model in the future.

Electric machine (English: electric machine, commonly known as "motor") refers to an electromagnetic device that converts or transmits electric energy according to the law of electromagnetic induction.

The motor is represented by the letter M (D in the old standard) in the circuit, and its main function is to generate driving torque. As the power source of electrical appliances or various machines, the generator is represented by the letter G in the circuit, and its main function is to convert mechanical energy into electrical energy.

Motor model composition and meaning

It is composed of four sections: motor type code, motor feature code, design serial number and excitation mode code.

1. The type code is the Chinese phonetic alphabet used to represent various types of motors. For example:

Y asynchronous motor

T synchronous motor

TF synchronous generator

Z DC motor

ZF DC generator

2. The characteristic code represents the performance, structure or purpose of the motor, and is also represented by Chinese phonetic alphabet. For example:

B explosion proof type

YT Yb axial fan

YEJ electromagnetic braking type

YVP variable frequency speed regulation

YD variable pole multi speed type

YZD crane

3. Design serial number refers to the sequence of motor product design, expressed in Arabic numerals. For the products designed for the first time, the design serial number is not marked, and the products derived from the series products are marked in the order of design. For example: Y2, YB2

4. The excitation mode codes are represented by letters, s represents the third harmonic, J represents the thyristor, and X represents the phase complex excitation.

Example 1: y2-- 160 M1 – 8, where:

Y: Model, indicating asynchronous motor;

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

160: center height, which is the height from the shaft center to the plane of the base;

M1: base length specification, M is medium, in which footnote "2" is the second specification of M-type iron core, and "2" type iron core is longer than "1" type iron core.

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

Example 2: y 630-10 /1180, where:

Y refers to asynchronous motor;

630 means power 630kw;

10 pole, stator core outer diameter 1180mm.

The compilation method of motor model generally consists of the following four parts: first, product code, second, specification code, third, special environment code, and fourth, supplementary code.

I. product code

That is, the series and type code of the motor. Generally, it is composed of the Chinese phonetic prefix of one or several letters in the Chinese characters of the series and name of the motor, such as:

Y AC asynchronous motor

T AC synchronous motor

TF AC synchronous generator

Single phase asynchronous motor for YDT electric valve

In this part, the international common letter code that has been used for many years is sometimes used. For example, the code of AC single-phase capacitor motor is YC, of which C is the international common capacitor code.

When the letter code is followed by an Arabic number, this number represents the design serial number or modification times of this series of products.

II. Specification code

It is the code of motor specification form. It includes: motor structure parameters, such as seat number, core specification, center height, flange end cover code, motor performance parameters (pole number, capacity, voltage, current, speed, etc.).

In this part, items that can be expressed in specific numbers are given in Arabic numbers, such as center height, rated voltage, etc; If it is impossible or difficult to express with specific numbers, it shall be expressed with letters or numerical codes.

For example, the length of the base is represented by l\m\s (long, medium and short English words and letters), and the different iron cores of the same base are represented by numbers such as 1, 2 and 3 (the larger the number, the longer the iron core). The flange end code is represented by the international letter symbol FF (with through hole on the flange) and the value of the base circle diameter of the center of the flange fixing hole. It is expressed by center height, base length, core length and pole number:

1. Center height refers to the height from the motor axis to the bottom corner of the base; According to the center height, motors can be divided into four types: large, medium, small and micro, among which:

H within 45mm~71mm belongs to micro motor

Small motors with h of 80mm~315mm

H in 355mm~630mm belongs to medium-sized motor

H above 630mm is a large motor

2. The length of the machine base is indicated by international common letters:

S - short frame

M - middle engine base

L - long base

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

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

III. special environment code has the following provisions

Give the contents of special working environment applicable to the motor. Represented by specific letters or letters plus numbers.

Special environment code:

G Plateau

H ship (SEA)

W outdoor

F chemical corrosion prevention

T tropics

Th humid tropics

TA dry tropics

If W is used, the motor can be used outdoors; Th indicates that the motor can be used in humid and hot environment, etc; This part is only given when necessary, that is to say, common motors do not have this part.

IV. supplementary code is only applicable to motors with supplementary requirements

The contents include installation methods, derived serial numbers, etc., which are composed of letters (except for the special symbols with unified regulations, the Chinese phonetic alphabet prefix is generally used) or Arabic numerals.

For example: the meaning of each code of the motor with the product model of yb2-132s-4 h is:

Y product type code, indicating asynchronous motor

B product feature code, indicating flameproof type

2 product design serial number, indicating the second design

132 the center height of the motor indicates that the distance from the axis to the ground is 132 mm

S length of motor base, expressed as short base

4-pole number, indicating 4-pole motor

H special environment code, indicating marine motor

For example, V1 indicates that the motor should be installed vertically (with the main shaft facing down); P18 indicates that the motor is the 18th derivative product. The content represented by the supplementary code shall be specified in the product standard.

For example: yd2-160m2-4 th V3, where:

Yd2 is the first part, 160m2-4 is the second part, th is the third part, and V3 is the fourth part.

Yd2 indicates that the motor is a common pole changing multi (d) speed three-phase (y) step motor of the second design or the second generation product

160 means the base number of the motor is 160. For the motor with foundation, it is directly the shaft center height (unit: mm); For the motor without feet, it means that the height of the motor base and the axis is 160mm, and the inner and outer diameters of the base with feet are the same.

M2 stands for medium length frame; The length of iron core used is No. 2

4 indicates that the number of poles is 4

Th indicates that the motor can be used in hot and humid environment

V3 indicates that the motor is installed vertically when used, and the main shaft is extended upward.

Motor includes motor and generator. It is the general term of generator and motor, which are conceptually different from each other. However, some motors, such as synchronous motors, are generally used as generators, but they can also be used directly as motors. Asynchronous motor is more used for motor, but after adding simple peripheral components, it can also be used as a generator.