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- Asynchronous electric motors
Asynchronous electric motors
// Key materials
Where to start
The foundational articles of the category: how an asynchronous machine is built, the complete repair process and stator rewinding.
Overview
Asynchronous motors: design, operating principle, types, characteristics, faults and repair
The foundational article of the category — design, classification, duty types and typical defects.
Read the articleTechnology
How electric motors are repaired: the complete process from fault detection to testing
The full works-repair route, with verification steps at every stage.
Read the articleTechnology
How a motor stator is rewound: the full technology from fault detection to testing
Winding calculation, laying, insulation, impregnation and post-rewind testing.
Read the article
// All articles in the category
Choose a topic
Each article covers one topic: causes, symptoms, the diagnostic sequence, typical mistakes and answers to common questions.
Overview
1 articleAsynchronous motors: design, operating principle, types, characteristics, faults and repair
The foundational article of the category — design, classification, duty types and typical defects.
Read the article
Technology
2 articlesHow electric motors are repaired: the complete process from fault detection to testing
The full works-repair route, with verification steps at every stage.
Read the articleHow a motor stator is rewound: the full technology from fault detection to testing
Winding calculation, laying, insulation, impregnation and post-rewind testing.
Read the article
Diagnostics
2 articlesTesting the stator of an electric motor
Insulation resistance, surge test, core loop test, checking the connections.
Read the articleTesting the rotor of an electric motor
Squirrel-cage bars, shaft run-out, imbalance, slip rings.
Read the article
Faults
4 articlesWhy do motor windings burn out?
Overload, running on two phases, breakdown to the frame, repair mistakes.
Read the articleInterturn short circuit in a motor winding
The most dangerous hidden winding defect and the methods that reveal it.
Read the articleWhy does an electric motor vibrate heavily?
Imbalance, misalignment, bearings, electromagnetic causes.
Read the articleWhy is an electric motor noisy?
Mechanical, electromagnetic and aerodynamic noise — how to tell them apart.
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Overheating
4 articlesWhy does an electric motor get hot?
The main causes of overheating, diagnostic methods and ways to eliminate it.
Read the articleWhy does the stator of an electric motor get hot?
Overheating of the stator winding and magnetic core.
Read the articleWhy does the rotor of an electric motor get hot?
Damaged bars, increased slip, prolonged starting.
Read the articleWhy do electric motor bearings get hot?
Lubrication, misalignment, axial loads, worn components.
Read the article