Services
Expert care for the full life cycle of your electrical assets
From diagnosis to major rehabilitation, from preventive maintenance to 24/7 emergency. Every service backed by precision instrumentation and a documented protocol.
Power transformer maintenance
Preventive, corrective and major maintenance for distribution and power transformers from 75 kVA to 230 MVA, under IEEE C57 and IEC 60076.
Learn moreTransformer rehabilitation & repair (incl. shell-type)
Major rehabilitation and repair of distribution and power transformers — including shell-type (armored) transformers — up to 230 MVA.
Learn moreShell-type (acorazado) transformer repair
Repair and rehabilitation of shell-type power transformers and their tap changers, up to 230 MVA — a capability few shops in Mexico and Latin America offer.
Learn morePower transformer rewinding
Total or partial rewinding of high- and low-voltage windings, with conductor and insulation to the design specification, up to 230 MVA.
Learn moreDiagnostics & electrical testing
Diagnostic electrical testing of transformers and substations with Omicron and Megger instrumentation and a documented protocol.
Learn moreSubstation maintenance
Maintenance and integration of MV and HV substations up to 230 kV: breakers, protection, instrument transformers and documented commissioning.
Learn moreTap changer (OLTC) repair
Repair and maintenance of on-load (OLTC) and de-energized (DETC) tap changers: contacts, mechanism, oil and acceptance testing.
Learn moreTransformer bushing repair & replacement
Diagnosis, repair and replacement of transformer bushings — one of the most violent causes of catastrophic failure.
Learn moreTransformer magnetic core repair
Repair of the magnetic core: shorted laminations, core ground faults and restacking, diagnosed with excitation current and core-loss testing.
Learn moreTransformer drying
Removal of moisture from the paper insulation to restore dielectric strength and extend insulation life, verified by testing.
Learn moreTransformer & substation commissioning
Pre-energization testing and acceptance protocol to confirm a transformer or substation is fit to enter service.
Learn moreModernization & repowering
Upgrade and repower transformers and substations to extend their useful life and capacity, integrating modern protection and control.
Learn moreThermographic inspection
Infrared predictive inspection of transformers and substations, performed under load, to find hot spots before they cause failure.
Learn moreSwitchboard maintenance
Maintenance of distribution, control and protection boards and MCC cabinets, with cleaning, re-torque, thermography and testing.
Learn moreDielectric oil filtering
Vacuum dehydration and filtering of transformer dielectric oil to restore dielectric strength and remove moisture, gases and particles.
Learn more24/7 emergency service
Immediate remote diagnosis and on-site crew for critical assets with unplanned outages, across Mexico.
Learn moreTransformer sales
Supply of distribution and power transformers backed by Grupo TEMISA, with technical support and commissioning.
Learn moreSubstation sales
Supply and integration of medium- and high-voltage substations, with engineering, testing and commissioning.
Learn moreSwitchboard sales
Supply of distribution, control and protection boards and MCC cabinets, with technical support.
Learn moreTalk to a transformer specialist
Tell us about your asset and we'll respond with a diagnosis and a tailored quote — not generic pricing.