Service · Generator Repair

Industrial Generator Repair

Independent multi-OEM workshop for stator + rotor repair, electrical rewind, ELCID core restoration, brushless excitation diagnosis. 1-700 MVA capacity range. Under CFE LAPEM W4200-12 + IEEE 56 + EASA AR100 + ISO 9001:2015.

Request a quote

Service overview

Industrial Generator Repair — what we deliver

Industrial generator repair requires multi-disciplinary capability: mechanical disassembly + electrical rewind + insulation system + brushless excitation + dielectric testing + final commissioning. As an independent multi-OEM workshop certified CFE LAPEM W4200-12, TEMISA Power Gen handles full-scope repair on synchronous generators 1-700 MVA from any major OEM (ABB, Siemens Energy, GE Vernova, Toshiba, Mitsubishi, Hitachi, Brush, WEG, Stamford, etc.) — outside OEM warranty period with equivalent technical compliance under IEEE 56 + EASA AR100.

Workshop capabilities

Technical scope

Stator winding rewind with VPI vacuum-pressure impregnation Class F or H
Rotor field coil rebuilding (salient-pole + cylindrical) under EASA AR100
ELCID core repair under IEC 60034-15 + retaining-ring NDT
Brushless excitation diagnosis and component replacement
Dielectric testing CFE LAPEM W4200-12 (Megger + IP + Tan Delta + DP + Hipot)
Surge Comparison + Bridge Test under EASA AR100 for inter-turn short detection
Dynamic balancing G2.5 under ISO 21940 with 60-ton workshop crane
Commissioning under IEEE 56 + IEEE 115 + CFE LAPEM W4200-12 for grid interconnection

Applications

Where we apply this service

Post-failure emergency repair

Major fault repair: lightning strike damage, stator flashover, rotor short, bearing failure. 24/7 response within 24 hours across Mexico + Central America.

Scheduled major overhaul

Programmed repair during planned shutdown windows under IEEE 56 cycles — typical 5-8 years base-load, 3-5 years cycling.

Post-acquisition condition restoration

Used + secondhand generator acquisition with required restoration to CFE LAPEM W4200-12 commissioning compliance.

Rewind + commissioning bundle

Full stator/rotor rewind + complete recommissioning under one fixed-price contract with EASA AR100 certification.

Frequently asked questions

How long does industrial generator repair typically take?

Typical timelines by capacity: 1-10 MVA → 4-6 weeks workshop. 10-50 MVA → 6-10 weeks. 50-150 MVA → 8-12 weeks. 150-700 MVA → 10-16+ weeks depending on scope (stator rewind + rotor work + core repair). We provide formal schedule on quotation review including critical-path activities and procurement timeline for any imported components.

Do I lose OEM warranty by using an independent repair workshop?

Only if the generator is still within original OEM warranty period (typically 2-5 years from commissioning). Once outside OEM warranty, independent repair workshops certified CFE LAPEM W4200-12 + EASA AR100 + ISO 9001:2015 are fully compatible without affecting asset value, insurance coverage, or operational compliance. Most industrial generators in Mexico operate outside OEM warranty for the majority of their useful life (25-40 years total).

What's the cost range for major industrial generator repair?

Reference ranges by capacity (USD): 1-10 MVA repair USD 80K-400K. 10-50 MVA USD 400K-1.5M. 50-150 MVA USD 1.5M-4.5M. 150-700 MVA USD 4.5M-15M+. Cost varies significantly by scope (stator only / rotor only / full overhaul) + condition of magnetic core (ELCID test required before rewind) + OEM-specific components requiring procurement. We provide formal quotation after initial diagnostic visit + customer-supplied operational history.

Other services