Featured Dry-Type & Specialised Transformer Solutions
Tested rigorously by CPRI & ERDA, our transformers feature 100% electrolytic pure copper windings, F/H insulation classes, and custom enclosure ratings up to IP65 for harsh coastal or industrial environments across Spain.
Aluminium Body Small Wind Turbine Isolation Transformer for Farm
Weatherproof, low-loss dry isolation transformer specifically optimized for decentralized agricultural wind turbine generators and rural microgrids across Spain.
High Voltage Step-Up Transformer 10MVA - 20MVA 66kV/33kV Dyn11
Heavy-duty power transformer with pure electrolytic copper windings, designed for utility grid interconnections (Endesa, Iberdrola) and large solar installations.
Wind Turbine Generator Isolation Transformer 800KVA IP65 CE Certified
CE-certified 3-phase dry-type isolation transformer delivering harmonic filtration and galvanic separation for renewable generation complexes in Spain.
Single/Three Phase Industrial Control Transformer 5kVA-10kVA Pure Copper
Precision dry control transformer engineered for packaging machinery, automated assembly lines, and industrial control cabinets operating on Spanish voltage standards.
Fire-Safe 33kV/35kV Cast Resin & VPI Wind Turbine Dry Transformer
Flame-retardant (Class F1) indoor/tower transformer built with non-hygroscopic epoxy cast resin or VPI technology to completely remove fire risks in urban buildings or wind nacelles.
100kVA 10kV/0.4kV High-Efficiency Distribution Transformer IEC/CE
Compact step-down transformer meeting EU Ecodesign Tier 2 low-loss standards. Ideal for municipal power distribution and commercial facility substations.
Offshore/Onshore Wind Turbine Dry Transformer 5-25MVA 66kV-72.5kV
High-capacity step-up transformer engineered to endure extreme thermal cycling, vibration, and salt-mist corrosion in offshore wind installations in Northern Spain.
High Efficiency 3-Phase Distribution Transformer 10kV/0.4kV Pure Copper
Heavy-duty distribution transformer featuring superior short-circuit withstand capabilities, optimized magnetic core stack, and low acoustic noise level for industrial loads.
As Spain rapidly accelerates its energy transition under the updated Plan Nacional Integrado de Energía y Clima (PNIEC 2023-2030), electrical infrastructure requirements have evolved dramatically. Traditional oil-immersed transformers present environmental hazards regarding soil contamination and severe fire risk in enclosed urban or renewable power plants. Dry-Type Transformers—specifically Cast Resin Transformers (CRT) and Vacuum Pressure Impregnated (VPI) Transformers—have emerged as the compulsory standard for modern Spanish infrastructure.
Our manufacturing facility utilizes advanced Vacuum Pressure Impregnation (VPI) utilizing high-temperature resin formulations alongside precision epoxy Cast Resin Technology. Both technologies ensure partial discharge levels below 10 pC—far superior to the standard 20 pC specified by European norms. This engineering excellence prevents insulation breakdown even when subjected to heavy high-frequency harmonics generated by modern solar inverters and variable frequency drives (VFDs).
| Technical Parameter | VPI Dry Transformer | Cast Resin (CRT) Dry Transformer | EU Ecodesign Tier 2 Compliance |
|---|---|---|---|
| Insulation Class | Class H (180°C) / Class C (220°C) | Class F (155°C) / Class H (180°C) | Exceeds UNE-EN 60076-11 |
| Fire Behavior Rating | F1 (Self-extinguishing, low smoke) | F1 (Non-flammable, toxic-free) | Mandatory EN 50588-1 Class F1 |
| Environmental / Climatic Class | E2 / C2 (Resistance to humidity & thermal shock) | E3 / C3 (Heavy condensation & marine splash zone) | Required for coastal Spain (Galicia/Valencia) |
| Partial Discharge | < 10 pC (Ultra-low degradation) | < 5 pC (Zero corona risk) | Extends operational lifecycle > 30 Years |
| Cooling Options | AN (Air Natural) / AF (Air Forced +40% capacity) | AN / AF (Automatic digital temperature control) | Optimized for ambient temperatures >45°C |
Established in 1991, Urja Techniques (India) Pvt. Ltd. operates state-of-the-art manufacturing facilities certified under ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018. Over 40% of our production is exported across 40+ countries worldwide. Every dry transformer manufactured for the Spanish market undergoes complete type testing at recognized third-party laboratories—including CPRI (Central Power Research Institute) and ERDA (Electrical Research and Development Association)—confirming dielectric integrity, short-circuit withstand performance, and acoustic sound levels.
Our plant features an in-house temperature rise testing facility—one of the mandatory quality verification steps required by international standards. By utilizing top-grade Cold-Rolled Grain-Oriented (CRGO) silicon steel (M0H and M1H grades) and computer-optimized magnetic circuits, we ensure exceptionally low no-load losses ($P_0$) and low load losses ($P_k$), maximizing financial payback for Spanish solar grid operators and industrial clients.
Localized Application Scenarios Across Spanish Sectors
Custom-engineered dry transformers built to overcome local climate challenges—from extreme ambient summer heat in southern Spain to high humidity and salt mist in coastal industrial hubs.
Solar PV Utility Parks (Andalucía & Extremadura)
In regions like Badajoz, Seville, and Almería where summer temperatures routinely exceed 45°C, our solar step-up VPI dry transformers are equipped with forced-air cooling (AF) and high thermal margin insulation (Class H). Designed to handle non-sinusoidal inverter harmonics (THD) and continuous solar power feeding into 20kV / 33kV distribution networks.
Onshore & Offshore Wind Farms (Galicia & Navarra)
Designed for installation directly inside wind turbine nacelles or base towers in northern wind corridors. Built with vibration-proof core clamping structures and C3/E3 marine-grade protective enclosures to resist dampness, salt corrosion, and structural mechanical resonance.
Data Centers & Microelectronics (Madrid & Barcelona)
Mission-critical facility power distribution requires maximum reliability and silent operation. Our cast resin transformers deliver ultra-low acoustic sound levels (<50 dB) and Zero Partial Discharge performance, preventing electrical noise interference in hyper-scale cloud data centers in Madrid Metropolitano.
Green Hydrogen & Industrial Electrolyzers (Puertollano)
Heavy duty Converter Duty Dry Transformers optimized for 6-pulse, 12-pulse, and 24-pulse rectifier systems. Engineered with multi-winding phase-shifting secondary outputs to minimize grid harmonic distortion during large-scale water electrolysis processes.
Hospitals & Commercial Skyscrapers (Madrid & Valencia)
Complying strictly with Spanish technical building regulations (CTE - Código Técnico de la Edificación), our F1 fire-rated dry transformers emit zero toxic smoke during emergency power events, allowing safe installation in underground substations and high-rise commercial towers.
Heavy Metallurgy & Automotive Plants (Basque Country)
Industrial manufacturing plants in Bilbao, Zaragoza, and Vigo rely on our rugged VPI dry transformers for high impulse withstand strength, overload resilience (+20% continuous overload with AF cooling), and protection against airborne conductive metallic dust.
Spain is leading the European Union in decarbonization efforts, with a goal of achieving 81% renewable electricity generation by 2030. Key drivers shaping transformer procurement in the Spanish market include:
- Strict EU Ecodesign Directive 2019/1783 (Tier 2): It is legally mandatory across Spain to deploy medium power transformers meeting Tier 2 maximum allowed load ($P_k$) and no-load ($P_0$) losses. Purchasing non-compliant equipment results in grid connection rejection by DSOs such as Endesa Distribución, i-DE (Iberdrola), or UFD (Naturgy).
- Grid Modernization & Smart Monitoring: Spanish utilities require integrated digital sensors (PT100 temperature probes, RS485 Modbus temperature controllers, online partial discharge monitoring) to support predictive maintenance.
- Expansion of Energy Storage & EV Fast-Charging Microgrids: The rapid rollout of high-power charger corridors along the AP-7 and A-1 highways demands compact indoor dry transformer substations capable of handling heavy intermittent peak loads.
Frequently Asked Questions by Spanish Engineering & EPC Buyers
Essential insights regarding technical compliance, customs clearance, shipping logistics to Spanish ports, and warranty terms.
1. Do your dry-type transformers comply with UNE-EN 60076 and EU Ecodesign Tier 2?
Yes. All dry transformers supplied to Spain are fully engineered to meet UNE-EN 60076-11 standards and comply strictly with EU Ecodesign Directive 2019/1783 Tier 2 efficiency mandates, guaranteeing seamless approval by Spanish grid operators (Endesa, Iberdrola, REE).
2. What primary MV voltage ratings do you support for Spanish distribution grids?
We manufacture dry transformers for all standard Spanish MV levels, including 11kV, 15kV, 20kV, 24kV, 30kV, and 33kV primary voltages, stepped down to standard 400V/230V or specialized inverter voltages (600V, 690V, 800V AC).
3. What certifications and type test reports are provided with each order?
Every shipment comes with CE marking, ISO 9001 quality certificates, routine test certificates, and complete type test reports from CPRI/ERDA covering short-circuit withstand, temperature rise, lightning impulse voltage, and sound level tests.
4. What is the delivery lead time to major Spanish ports like Bilbao, Valencia, or Barcelona?
Standard production for customized VPI/Cast Resin transformers ranges from 4 to 6 weeks. Ocean freight from our facility to main Spanish ports (Valencia, Barcelona, Bilbao, Algeciras) typically takes 22–28 days. Expedited air shipping is available for urgent replacement projects.
5. How do your dry transformers withstand high ambient heat in Southern Spain?
Our units utilize Class H (180°C) or Class C (220°C) insulation materials, optimized cooling duct design, and CRGO cores designed for continuous operation at ambient temperatures exceeding 45°C without thermal degradation or power derating.
6. What warranty and field technical support do you provide for Spanish installations?
We provide a comprehensive 18 to 24-month operational warranty. Additionally, our global engineering support team offers remote site commissioning assistance, digital diagnostic support, and spare parts supply directly to European buyers.
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