Our specialization in medium voltage is endorsed by the approval of our transformers in the main utilities. Currently more than 170,000 Ormazabal transforma.pad devices are installed in electric distribution networks, industry, wind farms and photovoltaic plants in more than 20 countries.
We manufacture a complete range of power and/or distribution transformers immersed in dielectric liquid, according to all requirements of current international regulations, with a power range from 25 kVA to 10,000 kVA and insulation levels of up to 72.5 kV (IEC).
Our close collaboration with our customers enables us to develop transformers according to their specific standards and specifications. Thus, Ormazabal has developed a complete range of three-phase power transformers, for application in padmounted solutions for underground residential distribution networks and renewable energies, with standard powers and voltages up to 3000 kVA and insulation levels up to 38 kV.
»»High safety and ergonomics for operators whilst working on the transformer thanks to the cabinet.
»»High safety for pedestrians without the need for enclosures or protective bars.
»»Self-protected (Bay-O-Net type fuses and full-range current-limiting fuses, and load switch-disconnector for quick and safe power disconnection)
»»Quick and simple installation, optimised time and costs
»»Low maintenance costs
»»Quick and simple replacement
»»Input/output of medium and low voltage cables through bottom access in the cabinet
»»Minimal space requirement as it is a full compact substation
»»Reduced volume of dielectric liquid
»»Long service life in aggressive environmental conditions
»»Metal cabinet with individual access doors to the medium and low voltage operation areas
»»Rigid metal tank with gas chamber and cooling fins
»»Self-protected with fuses and switchdisconnector (optional)
»»Radial or ring operation
»»Medium voltage bushing well (200 A) or bolt bushing (600 A)
»»Tap changer, operable without voltage
»»Dielectric liquid: mineral oil, optional, synthetic or natural biodegradable liquid
»»Temperature and dielectric liquid level indicators