- // 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// 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// 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
The complete repair cycle of a synchronous electric machine
The scope and sequence of work are defined after fault detection and depend on the design of the machine, the nature of the damage, and the Customer's technical requirements. The exact list of operations is drawn up individually once the electric machine has been inspected.
- 01Incoming diagnostics and full fault detection
- 02Electrical measurements
- 03Vibration diagnostics and thermal imaging
- 04Disassembly of the machine
- 05Winding removal
- 06Testing of the stator active steel
- 07Fault detection of the rotor, poles, shafts and bearing assemblies
- 08Manufacturing of winding sections and coils
- 09Stator rewinding
- 10Repair or rewinding of the rotor winding
- 11Repair of the excitation poles
- 12Impregnation and heat treatment
- 13Repair of shafts and seating surfaces
- 14Restoration of the bearing assemblies
- 15Machining
- 16Repair of housing parts
- 17Rotor balancing
- 18Assembly of the machine
- 19Adjustment of the air gaps
- 20Installation of sensors
- 21Electrical and high-voltage acceptance tests
- 22Trial run
- 23Issuing of the test protocols
// 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.
// SCOPE OF WORK
What the repair includes
Manufacturing of stator winding sections
Manufacturing of pole coils
Repair of salient-pole rotors
Restoration of active steel
Restoration of bearing assemblies
Stator rewinding
Impregnation and heat treatment
Shaft machining
Rotor balancing
High-voltage testing
// COMMON FAULTS
The faults we resolve
// TESTING & CONTROL
Four control points — from intake to handover
Incoming insulation-resistance check, component measurement, fault report.
Every operation is checked before moving on to the next stage.
No-load run-in with vibration and heating checks on every assembly.
High-voltage test up to 35 kV with turn-to-turn control of the stator and field windings.
Once testing is complete, the Customer receives a protocol issued by a certified laboratory.
// INDUSTRIES SERVED
Where our repaired machines work
// COMPLETED PROJECTS
Completed projects
We repair synchronous electric machines of any type and rating for companies across Ukraine.
Overhaul of the stator and rotor of an SDMZ 2-22-41-60 synchronous motor
Stator rewinding, rotor repair and balancing of a T-20 synchronous turbo motor
Rotor repair, stator rewinding, machining and balancing of an imported IEB-155-75-4Z synchronous motor
Overhaul of a VGS-525-84-40 synchronous hydro generator
// WHY CLIENTS TRUST US
- 01In-house manufacturing of stator winding sections
Forming, insulation and geometry control on our own production line.
- 02Manufacturing of pole coils
A full cycle of manufacturing and repairing field coils.
- 03Full repair cycle for synchronous machines
No third-party contractors involved.
- 04Our own test station
Every machine is checked and handed over with a protocol.
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.