Complete list of motor model parameters, you can understand the motor model after reading it.
Electric motor model numbers are used to facilitate business contacts and simplify technical documentation for various departments such as usage, design, and manufacturing. Here's some information about electric motor model numbers:
**I. Composition and Meaning of Electric Motor Model Numbers**
An electric motor model number typically consists of four sections: the motor type code, motor feature code, design sequence number, and excitation method code.
1. **Type Code:** Represents various motor types using Romanized Chinese characters. For example:
- Asynchronous motor: Y
- Synchronous motor: T
- Synchronous generator: TF
- Direct current motor: Z
- Direct current generator: ZF
2. **Feature Code:** Represents the motor's performance, structure, or purpose, also using Romanized Chinese characters. For example:
- Explosion-proof type: B
- Axial flow: YB
- Ventilator application: YT
- Electromagnetic brake type: YEJ
- Variable frequency speed regulation: YVP
- Variable pole multi-speed: YD
- Crane motor: YZD
3. **Design Sequence Number:** Indicates the order of product design and is represented by Arabic numerals. For the first design of a product, the design sequence number is not marked. Subsequent products derived from a series are labeled in order.
Example: Y2YB2
4. **Excitation Method Code:** Represented by letters, where:
- S stands for three-phase harmonic excitation
- J stands for thyristor excitation
- X stands for field weakening excitation
Example: Y2-160M1-8
- Y: Motor type, representing an asynchronous motor
- 2: Design sequence, "2" indicating a product with improvements based on the first design
- 160: Center height, the distance from the axis center to the base plane
- M1: Base length specification, M signifies medium, with "2" indicating the second specification for M core length compared to the "1" specification, which is shorter.
- 8: Number of poles, "8" represents an 8-pole motor.
Example: Y630-10/1180
- Y: Asynchronous motor
- 630: Power rating of 630KW
- 10 poles, stator core outer diameter of 1180mm
**II. Specification Codes:** The main specifications are represented by center height, base length, core length, and number of poles.
1. **Center Height:** Refers to the height from the motor axis center to the base angle surface. Motors are categorized into large, medium, small, and micro based on their center height. Micro motors have center heights between 45mm to 71mm, small motors between 80mm to 315mm, medium motors between 355mm to 630mm, and large motors with center heights exceeding 630mm.
2. **Base Length:** Represented by international-standard letters:
- S: Short base
- M: Medium base
- L: Long base
3. **Core Length:** Represented by Arabic numerals 1, 2, 3, 4, etc., from long to short.
4. **Number of Poles:** Represented by values such as 2 poles, 4 poles, 6 poles, 8 poles, etc.
**III. Special Environment Codes:** Codes are defined for specific environmental conditions, such as:
- "G" for high temperature
- "H" for marine (sea) use
- "W" for outdoor use
- "F" for chemical corrosion resistance
- "T" for tropical use
- "TH" for humid tropical use
- "TA" for dry tropical use
**IV. Additional Codes:** These are applicable only to motors with specific requirements.
**Example:**
A motor with the model number YB2-132S-4H can be interpreted as follows:
- Y: Product type code, indicating an asynchronous motor
- B: Feature code, indicating an explosion-proof type
- 2: Design sequence number, indicating the second design iteration
- 132: Motor center height, indicating a distance of 132 millimeters from the axis center to the ground
- S: Motor base length, indicating a short base
- 4: Number of poles, indicating a 4-pole motor
- H: Special environment code, indicating marine use.
With this detailed explanation of electric motor model numbers, you should be able to understand the type, features, design, specifications, and usage environment of a motor by looking at its model number.
