Offer
TRAFO-ENERGY offers a wide selection of low- and medium-voltage transformers ranging from 63 to 6500 kVA, compliant with IEC / PN-EN standards.
Check our transformer range
A proven solution for industry, energy and outdoor installations — efficient cooling and long service life.
Sprawdzone rozwiązanie dla przemysłu, energetyki i instalacji zewnętrznych — efektywne chłodzenie i długa żywotność.
Oil-filled transformers
Reliability in harsh conditions
Oil-filled transformers are a dependable solution for industry and power systems — they provide effective cooling, stable operation and long service life even in harsh conditions. Built in robust steel tanks, optionally equipped with a side filler/drain plug and instrument transformers, they are available both as standard models and in configurations prepared for individual projects.
They are used, among others, in light and heavy industry, power plants, switchgear, manufacturing facilities and LV and MV distribution networks.
Key features:
63–6500 kVA
Power range
Voltage
Compliant with requirements
ONAN, ONAF
Cooling
Resin (dry-type) transformers
Safety and maintenance-free operation in enclosed facilities
Resin transformers are an ideal solution for buildings, halls, enclosed facilities and locations where reducing the risk of fire and leaks is required. Using epoxy resin as insulation allows oil-free operation — maintenance-free and safe.
Resin transformers are available with insulation class F/H, with AN or AF cooling, and in enclosures IP00, IP21, IP31, IP44 matched to installation conditions. We offer both standard models and individually prepared configurations — with additional protections, instrument transformers or custom tap settings. This allows the equipment to be precisely tailored to project requirements and the specifics of the facility.
Key features:
100–3150 kVA
Power range
Voltage
Compliant with requirements
AN, AF
Cooling
Contact a TRAFO-ENERGY Engineer
Do you need a quote, availability check, or technical advice? Get in touch with us — you will receive an accurate quote and technical support from someone who understands your project. You will also receive information on realistic delivery times and current stock status.
Overhauls, service, regeneration
Technical services
TRAFO-ENERGY offers comprehensive technical services related to the operation of transformers. We operate with safety, reliability and extending the service life of equipment in mind – both our own and those supplied by other manufacturers.
Transformer overhauls
We perform professional overhauls of MV/LV transformers – oil-filled and resin-cast, restoring their operational efficiency, correct operating parameters and the aesthetics of workmanship. We cover both mechanical and insulation components so that the unit is ready for further, safe operation.
Each overhaul is completed with a protocol, photos and a technical report.
The scope of the overhaul is determined individually and may include:
- Cleaning and refurbishment of the tank
- Replacement of insulators, lifting lugs, valves
- Recreation of documentation
- Measurements and technical tests
- Painting and anti-corrosion protection
Service and inspections
We provide comprehensive service for both our own and entrusted transformers — from routine inspections to diagnostics and on-site repairs. We carry out thermographic checks, visual inspections and regular seasonal inspections that prevent failures and extend the equipment’s service life.
We also offer rapid technical support in emergency situations.
The scope of the overhaul is determined individually and may include:
- Warranty and post-warranty service
- Thermographic and visual checks
- Seasonal inspections
- Resistance and turns-ratio measurements
- Rapid emergency support
Transformer oil regeneration
We carry out oil regeneration using vacuum methods (on-load and off-load), restoring the medium to the dielectric parameters required for operation. The process reduces contaminant and moisture content, extends the insulation’s service life and often eliminates the need for costly oil replacement.
Upon completion of the work we provide a full measurement report and operational recommendations.
We perform transformer oil regeneration by vacuum method (on-load and off-load), including:
- Solid particle filtration
- Drying
- Degassing
- Measurements of dielectric losses (tgδ) and breakdown voltage