Repair Services
HydroelectricGenerator Repair.
Hydroelectric generators operate under demanding conditions where reliability and uptime are everything. REM Industrial provides expert repair and rewind services for hydro generators — restoring performance and extending service life for utilities and industrial facilities.
Specialized Capability
Electrical & Mechanical. Under One Roof.
Hydroelectric generator repair requires both deep electrical expertise and heavy mechanical capability — stator rewinds, rotor work, babbitt bearing pours, and precision balancing. REM combines all of these under one roof at our 55,000 sq. ft. New Haven facility, eliminating the coordination overhead of multiple shops and reducing the time your unit is offline.
What We Repair
Full Generator Scope. Every Failure Mode.
From stator winding faults and rotor pole damage to bearing failures and cooling system issues — REM handles the full range of hydroelectric generator repair work with the electrical and mechanical capabilities to back it up.
Stator & Field Winding Repair
Insulation breakdown, winding faults, and ground failures in stator and field windings — repaired and rewound with upgraded insulation systems and VPI treatment to restore electrical integrity and improve long-term reliability.
Rotor Pole Damage & Balancing
Rotor pole coil failures, core damage, and mechanical imbalance — repaired with precision winding replacement and dynamic balancing to eliminate vibration and restore smooth, efficient rotation.
Bearings & Housings
Babbitt bearing damage, contamination, and wear — including full babbitt pours and precision line boring. Thrust and guide bearing inspections with documentation against OEM tolerances.
Cooling & Lubrication Systems
Air and water cooling system leaks, blocked passages, and lubrication circuit failures — inspected, cleaned, and restored to maintain proper thermal management during operation.
Excitation & Control Components
Excitation system failures, AVR issues, and control component damage — diagnosed and repaired to restore voltage regulation and proper generator output performance.
Insulation Systems & VPI
Upgraded insulation application and vacuum pressure impregnation to maximize dielectric strength and moisture resistance — often extending service life well beyond the original OEM design life.
Our Repair Process
Disciplined. Documented. Verified.
Every hydroelectric generator repair follows a structured process from initial assessment through final testing — with full documentation at every stage so you have a complete record of condition, work performed, and verified performance.
Initial Assessment & Documentation
Comprehensive electrical and mechanical evaluation on arrival — documenting existing condition, identifying failure modes, and establishing a baseline for repair scope and test acceptance criteria.
Disassembly & Root-Cause Diagnosis
Full teardown with careful documentation of every component. Surge testing, hi-pot, winding resistance, and core-loss tests reveal hidden damage that visual inspection alone cannot identify.
Rewind, Rebuild, or Remanufacture
Stator and field rewinds using upgraded insulation and VPI treatment. Rotor work including pole coil replacement and core repairs. Babbitt bearing pours and precision mechanical rebuilds performed in-house.
Balancing & Mechanical Verification
Dynamic balancing to OEM or better tolerances. Bearing clearance checks, shaft runout verification, and alignment confirmation — all documented against acceptance criteria before reassembly.
Electrical Testing & Documentation
Post-repair electrical testing including hi-pot, surge comparison, insulation resistance, and polarization index — producing a complete traceable test report before the unit returns to service.
Beyond the Shop
Field Service & Outage Support
Large hydroelectric generators often can't come to us — we come to them. REM's field service team provides on-site diagnostics, removal coordination, and reinstallation support for units that require in-place work or turnkey outage management.
On-Site Field Service
REM's field team provides on-site troubleshooting, vibration analysis, alignment verification, and diagnostics for hydroelectric generators at your facility — minimizing transportation risk and downtime for large units.
Planned Outage Coordination
We work within your planned outage windows to coordinate disassembly, transport, repair, and reinstallation — providing a single point of contact and accountability throughout the entire process.
New Equipment Supply
When repair isn't the best long-term investment, REM sources new generator components or complete replacement units from trusted manufacturers — helping you evaluate total cost of ownership before committing.
Why REM
The Capability Behind Every Job
Hydroelectric generator repair is a specialized discipline that most shops can't handle. REM combines the electrical depth, mechanical capability, and testing infrastructure that these critical assets demand.
Generator Down? Let's Talk.
Emergency response available. New Haven repair facility and field service teams serving New England utilities and industrial facilities.