An engine designation like “AIR100L4” looks like a set of symbols, but each of them carries meaning. The ability to readelectric motor labelshelps you select a replacement and understand the characteristics. Let's look at examples.
Decoding using the example of AIR100L4
| Part | Value |
|---|---|
| AIR | Motor series (asynchronous, single series) |
| 100 | Height axis of rotation, mm |
| L | Installation dimension along the length of the frame (S, M, L) |
| 4 | Number of poles (determines the speed) |
Number of poles and speed
The number of poles sets the synchronous speed:
- 2 poles - ~3000 rpm
- 4 poles - ~1500 rpm
- 6 poles - ~1000 rpm
- 8 poles - ~750 rpm
Main series
- AIR - a modern single series, the most widespread.
- 4A - the predecessor of AIR, found on old equipment.
- DAZO, JSC - large and special machines.
Additional letters indicate the version: climatic, installation, protection. For more information about choosing an analogue, see the material about selecting a replacement engine.
Why know this
If the engine fails, markings allow you to quickly select an exact analogue. And when rewind the series and size help to restore the winding data. If the plate is erased, the parameters are determined by measurement during diagnostics.
Can’t decipher the marking or find an analogue in Tashkent? Elektromotors engineers will help - contact us.