Electrical testing and motor diagnostics
Electrical tests show the real condition of a motor's insulation system so the owner can decide, with data, whether it keeps running, goes into maintenance or needs a major repair. TEMISA runs insulation resistance, polarization index, surge and DC high-potential tests, plus vibration analysis and thermography, with calibrated instruments and an interpreted, graded report.
Scope
What the service covers
- Insulation resistance, PI and DAR per IEEE 43; DC high potential per IEEE 95 when the scope authorizes it.
- Surge comparison per IEEE 522 for turn-to-turn faults.
- Mechanical diagnosis: vibration per ISO 20816 and thermography.
- Independent service, useful to audit a fleet or verify third-party repairs.
Credentials
Who does the work
- CFE LAPEM qualification
- Supplier qualification certificate 053/26 (specification W6000-20, motors), issued February 20, 2026, valid through May 20, 2027; report R-N01328-9; Talleres Electromecánicos Industriales Sainz, S.A. de C.V., Tlajomulco plant. Literal scope: in-plant service to motors at rated voltage up to 1.5 kV; from 150 to 6,500 HP it includes coils; from 6,500 to 15,000 HP it is limited to cleaning, varnishing, testing and mechanical work; dynamic balancing approved up to 15 t. It is a credential, not the limit of the service offer (medium- and high-voltage motors above 1,000 V, subject to nameplate review).
- Quality management and repair process
- ISO 9001:2015 certificate IQS/3409/2026, valid September 24, 2026 through September 23, 2029. Repair processes follow ANSI/EASA AR100 (a process standard, not a certification).
- Plant
- 5,600 m² shop in Tlajomulco de Zúñiga, Jalisco, Mexico, with overhead cranes up to 60 t. Founded 1954.
FAQ
Frequently asked questions
Other questions: write to ventas@temisa.mx and an engineer will answer.
Do you accept low-voltage motors?
No. We accept industrial medium- and high-voltage motors only. Low-voltage motors (1,000 V or less) are outside our service scope. Send the nameplate for review before arranging shipment.
Can tests be done without disassembling the motor?
Yes. Insulation resistance, polarization index, vibration and thermography can be run with the motor in place; some tests need the motor disconnected or out of service.
What does the report include?
The tests performed, the test conditions, the results and an interpretation that grades what needs attention now, what to monitor and what can wait.
Request for quotation
Medium- and high-voltage enquiries
Provide the motor type and nameplate voltage above 1,000 V. Low-voltage models shown in the reference archive are not accepted. A nameplate photo and failure details help define the scope.
- Answered by an engineer, in English.
- Every motor returns with its recorded test data.
Or email ventas@temisa.mx or call +52 33 3614 2460 (Mexico, Central Time).