A burnt winding is the most common and expensive engine breakdown. But it almost always has a preventable cause. Let's look at why windings burn out and how to avoid it.
Main reasons
- Phase loss.Working on two phases sharply overloads the winding - burning out in minutes.
- Overload.The motor pulls more than designed and overheats.
- Clogged ventilation.No heat removal.
- Frequent heavy starts.Each start - strong heating.
- Moisture.Reduces insulation resistance, leading to breakdown.
- Seizing.Sharp increase in current.
How to understand the cause of combustion
An experienced technician The nature of the winding damage is determined by the cause:
| Picture of damage | Probable cause |
|---|---|
| Uniform overheating of the entire winding | Overload, clogged ventilation |
| Combustion of one phase | Breakage phase |
| Local burn-through | Interturn short circuit |
How to prevent
- Protection against phase loss (phase control relay).
- Correct setting of thermal protection.
- Regular cleaning of ventilation.
- Load control and diagnostics.
It is important to eliminate exactly the cause, otherwise the new winding will burn out again. High-quality rewinding should be accompanied by clarification of the cause of combustion.
Did the engine burn out in Tashkent? Elektromotors engineers will rewind it and determine the reason so that it does not happen again - leave a request.