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.

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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 CIGRE TB 257 + 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 applying the EASA AR100 standard.

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 to CFE LAPEM W4200-12 + ISO 9001:2015 and applying the EASA AR100 standard 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?

Cost varies significantly by capacity (MVA) and scope (stator only / rotor only / full overhaul) + condition of magnetic core (ELCID test required before rewind) + OEM-specific components requiring procurement. Every project is quoted case by case: we provide formal quotation after initial diagnostic visit + customer-supplied operational history.

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