Расшифровка обозначения трехфазного асинхронного двигателя YE3: высота оси, длина станины и полюса
YE3 series motor naming follows a clear structure. Understanding the designation helps buyers compare physical size, nominal speed and suitable installation options before confirming a final model with an engineer.
YE3 designation format
YE3-[center height][frame-length code][core-length code]-[pole count]
Example: YE3-132S2-2
| Part | Meaning |
|---|---|
| YE3 | High-efficiency three-phase induction motor series. |
| 132 | Center height of 132 mm. |
| S | Short frame length. |
| 2 | Second stator-core length within the frame length. |
| -2 | Two-pole motor; synchronous speed is approximately 3000 rpm at 50 Hz. |
Center height and frame length
The center height is the distance from the mounting surface to the shaft center, expressed in millimeters. A larger center height generally corresponds to a larger motor and potential power range. Frame length codes are commonly S for short, M for medium and L for long. The core-length code distinguishes stator-core length within the same frame length.
Pole count and speed
- 2 poles: synchronous speed approximately 3000 rpm at 50 Hz.
- 4 poles: synchronous speed approximately 1500 rpm at 50 Hz.
- 6 poles: synchronous speed approximately 1000 rpm at 50 Hz.
Typical YE3 characteristics
YE3 motors are commonly fully enclosed, fan-cooled designs. Typical configurations may use IP55 protection, F-class insulation and IC411 cooling. Confirm the actual technical data sheet for the selected frame size, power rating, voltage, mounting arrangement and applicable standard.
FAQ
Does the designation alone determine motor power?
No. Frame size and core length narrow the options, but rated power also depends on pole count and the manufacturer's technical data.
Does a two-pole motor always run at exactly 3000 rpm?
No. 3000 rpm is the approximate synchronous speed at 50 Hz. The rated running speed is lower because of slip.
For a preliminary recommendation, use our Motor Sizing Tool and request an engineering confirmation before purchase.