Video
Repair or replace a transformer? Measured condition is what decides
- Duration
- 23 seconds
- Language
- Spoken in Mexican Spanish
- Captions
- Spanish captions, switchable from the player
- Published
- Published September 18, 2026
What is behind this video
The question usually arrives with the budget already on the table: a transformer has been in service for years, it starts giving trouble, and someone has to decide whether to invest in repairing it or replace it. Age alone does not answer that. Two units built the same year can be in opposite condition depending on the load they carried, the temperature they ran at, and how their insulation was maintained.
A condition assessment combines electrical tests, DGA, moisture, furans and thermal and load history. Furans are an indirect ageing indicator affected by paper type and oil treatment. Existing cellulose cannot be rejuvenated by oil treatment or drying, but insulation can be replaced during a technically viable rewind or rebuild. Safety, scope, cost and lead time also inform the decision.
The 2,000 kVA case recorded furans below the detection limit and an estimated DP of 800. After an oil change, these results do not establish sound paper or a remaining-life percentage. The increase in hydrogen requires confirmation and follow-up before deciding an intervention.
The diagnosis is delivered with the measured value, the criterion it was compared against and a verdict per unit. That is the document a maintenance team uses to defend the route in front of operations and procurement.
The presenter in these videos is a character generated with artificial intelligence: the image and the voice do not belong to TEVKO personnel. The technical content and the figures quoted come from documented work and from the pages linked on each page.
Transcript — English translation
Repair or replace your transformer? Before authorising anything, find out its condition.
TEVKO assesses the unit and helps you define the route. Depending on the diagnosis, we can rehabilitate it or replace it. That way you can back the decision in front of your team.
Send the nameplate, the location and the problem with the unit to request an assessment.
Transcript — original Spanish audio
¿Reparar o cambiar tu transformador? Antes de autorizar, conoce su condición.
TEVKO evalúa el equipo y te ayuda a definir la ruta. Según el diagnóstico, podemos rehabilitarlo o reemplazarlo. Así puedes sustentar la decisión ante tu equipo.
Envía la placa, la ubicación y el problema del equipo para solicitar una evaluación.
The same Spanish captions ship as a WebVTT track inside the player. The contact shown on screen at the end of the video is ventas@tevko.com.
Questions this video answers
What do you need to know before authorising a transformer repair?
Its measured condition. The video puts it plainly: before authorising, find out the condition of the unit. The diagnosis then defines whether rehabilitating or replacing it makes sense.
What information is needed to request an assessment?
The nameplate, the location and the problem the unit presents. Those three data points are enough to scope the assessment. Send them to ventas@tevko.com.
Related pages
Technical content reviewed by TEVKO Technical Management · last reviewed: September 17, 2026
Request a technical assessment
Write to our sales inbox with the following and we will tell you what the next step is:
- The nameplate: rating, voltage, make and serial number.
- The location of the installation.
- The problem the unit presents, or the event that occurred.