If the engine loses power - it stops pulling the usual load, reduces speed, stalls - the reason may be both in the power supply and in the car itself. Let's figure out where to look for the problem.
Electrical reasons
- Voltage sag in the network. At low voltage, the motor torque drops in proportion to the square - even a small sag significantly reduces the thrust.
- Phase loss.The motor operates on two phases, loses power and overheats.
- Interturn short circuit. Part windings are short-circuited, the magnetic field is weakened.
- Weak contactin the terminals or cable.
Mechanical reasons
- Worn bearings create additional resistance.
- The rotor touches the stator.
- Problems in the driven mechanism, not in the motor.
How to find reason
| Check | What will show |
|---|---|
| Voltage at the terminals under load | Network sag |
| Phase current | Open, skew, overload |
| Resistance windings | Interturn short circuit |
| Shaft runout | Mechanical resistance |
It is important to first separate the network problem from the motor problem. If the voltage is normal, but the current is skewed in phases, the reason is in the winding, and rewinding may be required. If mechanical resistance increases, check bearings.
Has the engine stopped pulling? Elektromotors engineers in Tashkent will conduct full diagnostics and restore power - leave a request.