Industrial Alternator Maintenance & Repair by Nidec Power
Secure performance. Reduce downtime. Extend alternator lifetime.
Since 1919, Nidec Power has been providing maintenance for Leroy‑Somer™ and Kato Engineering™ industrial alternators, supporting critical installations worldwide.
Industrial alternators operate under demanding electrical, thermal and environmental conditions. Over time, insulation ageing, contamination and mechanical wear inevitably impact performance and reliability. Without proper maintenance, these effects can lead to unplanned shutdowns, production losses and safety risks.
As the OEM, Nidec Power delivers precise, reliable and long‑lasting maintenance, fully aligned with the original design of your equipment and compliant with the most stringent industrial standards.
Why choose the OEM for your industrial alternator maintenance?
Because no one understands your alternator better than the manufacturer.
- Direct access to original design drawings and specifications
- Maintenance procedures defined by the engineers who designed the machines
- Complete mastery of assembly, disassembly and critical components
- Exclusive use of 100% genuine spare parts
Our service technicians benefit directly from this OEM expertise in the field, with support from Nidec Power design offices and technical experts.
Certified expertise for critical and regulated environments
Our technicians and service partners are trained over several years to operate in the most demanding industrial environments and hold all required certifications, including:
- Electrical and mechanical certifications
- ISO 9001 quality standards
- Specialized certifications: HUET / BOSIET, OPITO, ATEX
We safely operate in marine and offshore installations, data centers, nuclear power plants, and hazardous areas, in full compliance with site-specific regulations.
Nidec Power Services global offering
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On-site ServicesOn‑site Alternator Services
Our field service technicians intervene directly at your facility to perform:
- Inspection and condition assessment
- Diagnostics and troubleshooting
- Preventive and corrective maintenance
- Repairs and partial or complete overhauls
All on-site interventions are carried out in accordance with Nidec Power OEM standards, with full traceability and the exclusive use of genuine spare parts, ensuring optimal performance, safety, and durability.
24/7 Emergency Alternator Repair
In the event of breakdown, our emergency process includes:
- Rapid technical review of site documentation
- Definition of scope, tools and spare parts
- On‑site intervention for temporary or permanent restoration
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Workshop ServicesWorkshop Alternator Services
For major maintenance operations and complex repairs, your alternator can be returned to one of our specialized workshops for complete refurbishment.
Our workshop services include:- Complete dismantling and expert inspection of all components
- Validation of maintenance scope by our engineering office and teams
- Full overhaul to like‑new condition
- Optimized turnaround time to limit downtime
Nidec Power services all makes and models, delivering comprehensive support across a wide range of rotating equipment. For heavy repairs, rewinding, and complex refurbishment projects, we leverage the specialized capabilities of Houma Armature Works™ - Nidec’s North American center of excellence - renowned for its industry‑leading expertise in high‑power rotating machine repair and remanufacturing.
When production shutdown is not an option, we also provide temporary alternator rental solutions. -
Spare PartsGenuine Leroy-Somer™ & Kato Engineering™ Alternator Spare Parts & Electronic Solutions
Keep your power systems running with genuine Nidec Power spare parts.
We supply and deliver OEM-certified alternator spare parts designed to ensure reliability, performance and long service life of your equipment - even in the most demanding applications.
From bearings and electronic regulators to sensors and mechanical components, our experts help you secure the right parts, at the right time, with full OEM compliance.
All parts supplied by Nidec Power are OEM tested alternator parts, ensuring reliability and long-term performance.
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Service NetworkGlobal Service Support, Including Emergency Response
Coverage & responsiveness
With industrial operations running worldwide, fast and reliable service support is essential. Nidec Power operates a global network of service centers, reinforced by specialized workshops such as Houma Armature Works™, to support your installations wherever and whenever needed.
Our global organization provides:
- Rapid mobilization of field service technicians
- Access to OEM documentation and design engineers
- Standardized tools, methods and quality processes worldwide
This structure ensures efficient planned maintenance and a robust emergency response, even in the most critical situations.
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Refurbished AlternatorsRefurbished Alternators & Replacement Solutions
Nidec Power’s alternator refurbishment program helps reduce production downtime, lower costs and improve environmental performance.
More than 100 certified reconditioned alternators are available from 10 to 6,250 kVA, in low, medium and high voltage, ready for immediate deployment to keep operations running without interruption. -
CARE2GEN Mobile WorkshopCare2Gen, the mobile workshop
A professional on-site maintenance service dedicated to the upkeep, inspection and repair of power generation equipment.
This mobile workshop solution allows critical operations to be performed directly at your site, reducing downtime, logistics constraints and operational disruptions.
Designed to meet the requirements of industrial and energy professionals, Care2Gen ensures reliable support for generator and alternator fleets, wherever they are installed.
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GENDO - Serial number searchGet direct access to key alternator information from any device.
GENDO is our mobile optimized website to provide instant help to anyone facing a Leroy-Somer™ alternator.
No app necessay, just scan the QR code on the nameplate and it will load quickly on almost all smartphones, even in poor connection conditions.The GEN.LS1.DO website provides the following services:
- Access key alternator data.
- Download useful documents: manuals, catalogues, certificates
- Get direct access to our Service team
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Video tutorialsExplore our expert tutorials on upgrading to digital regulators, configuring EasyReg Advanced, alternator sizing, and protection standards. Watch our videos now to master these critical engineering skills.