- // ELEKTROPROMREMONT
- Synchronous electric machine repair
Repair of synchronous electric machines
Salient-pole and non-salient-pole designs
Synchronous motors
Turbo and hydro generators
Generators
Repair and restoration of components
Excitation systems
From fault detection to testing
Full production cycle
// WHAT WE DO
Comprehensive repair of synchronous electric machines
Elektropromremont LLC performs comprehensive repair of synchronous electric motors and generators operated at power generation, metallurgical, mining, chemical, and other industrial enterprises.
The company carries out a full repair cycle: fault detection, active steel testing, stator and rotor repair, manufacturing of new stator winding sections and pole coils, stator rewinding, rotor rewinding, mechanical restoration of components, rotor balancing, assembly, and comprehensive electrical testing.
Once the repair is complete, every machine undergoes quality control at our own test station, with test protocols issued.
Overhaul of a synchronous electric motor rotor// REPAIR CYCLE
A visual repair cycle for a salient-pole rotor
Every stage on the blueprint is a real shop-floor operation: diagnostics, pole removal, coil rewinding, assembly, testing.
// REPAIR STAGES
Fourteen operations of the factory cycle
Every rotor goes through fourteen sequential operations. It moves to the next stage only after the previous one has been inspected.
- 01Diagnostics without disassembly
- 02Thermal imaging and vibration checks
- 03Unsoldering the interpole connections
- 04Removing the eight poles
- 05Measuring the dovetails and rim slots
- 06Rewinding the excitation coils
- 07Impregnation and baking
- 08Resistance check on every coil
- 09Seating the poles, air-gap control
- 10Restoring the damper cage
- 11Installing Pt100 and vibration sensors
- 12Asynchronous startup on the damper cage
- 13Synchronization and load test
- 14Recording the test protocol
// EQUIPMENT NOMENCLATURE
Which machines we repair
Each design type has its own repair and testing technology.
Synchronous electric motors
Turbo generators
Hydro generators
Excitation systems
// CAN'T FIND YOUR TYPE?
Send us the machine's nameplate data — we'll define the scope and timeline of repair.
SEND DATA// SCOPE & CONTROL
Scope of work, faults, and industries served
A full restoration cycle for synchronous machines at our own facility: from component fault detection to load testing and issuing the test protocol.
Mechanical work, windings, and pole coils all stay within one plant, with no third-party contractors involved.
// STATOR REWINDING
// ROTOR BALANCING
// POST-REPAIR TESTING// SPECIALIZED WORK
Manufacturing new stator sections with automated winding, pressing, insulation and geometry control, and vacuum impregnation.
A full cycle of manufacturing and repairing field (excitation) coils.
Restoration of the mechanical part, insulation, pole fastening, and cooling systems.
Inspection of the core packet condition, repair of damaged areas, interlaminar insulation. Full replacement of the stator and rotor active iron when required.
Restoration and manufacturing of bearing pedestals, re-lining of sleeve bearings with babbitt, manufacturing of new bearing segments and sealing rings.
// COMMON FAULTS
// SCOPE OF WORK
// INDUSTRIES SERVED
// WHY CLIENTS TRUST US
Learn more about electric motor repair in knowledge base
Technical articles, diagnostic guides, and answers to common questions from Elektropromremont engineers.
Need to repair a synchronous electric machine?
We will conduct technical diagnostics, determine the scope of repair, prepare a commercial proposal, and perform the complete repair cycle of a synchronous motor, turbo, or hydro generator according to the customer's requirements.