Finis Terrae PV project

Project Name: Finis Terrae
Country: Chile
Region: Maria Elena municipality, Tocopilla province in northern Antofogasta region
Type of Project: Solar power plant

Enel Green Power has started the construction of the new Finis Terrae solar photovoltaic power plant in Chile, over an area of 557ha. It will be able to generate more than 400 GWh per year, equivalent to the annual electricity consumption needs of nearly 198,000 Chilean households, and will avoid the annual emission of more than 198,000 tonnes of CO2 into the atmosphere.
The energy generated by Finis Terrae will be delivered to the transmission network of Chile’s northern region, SING (Sistema Interconectado del Norte Grande).
There will be two phases of 80MW for its construction, the first one is due to go online in December 2015, while the second one in June 2016. 
SEA is participating in this project supplying a batch of 110 transformers.

Transformer type: three phase oil immersed hermetic transformer
Power rating: 1600 (2x800) kVA
Voltage ratio: 33 ± 2 x 2,5 % / (2 x 270) V
Connecting group: Dy11y11
Construction: Double tier construction without intermediate joke

Chile is a Country with different and severe environmental conditions that can highly impact on the functioning of the transformers, depending on the specific area where they will be installed.
The transformers for this project have been designed in order to satisfy the following special required environmental conditions:

Altitude of installation: 1820 m.a.s.l.
Design ambient temperature (MAX): 50°C
Seismic requirements: Zone 3 with an acceleration of 0.4g in horizontal and vertical axis
Corrosion protection class: ISO-12944 C4

All the previous requirements have been analyzed by our Engineers who have developed the internal and external mechanical frame structure suitable for this scope together with a noteworthy electrical performance.  
Once completed, Finis Terrae with its total installed capacity of 160 MW will be the Chile’s largest solar photovoltaic power plant and once again SEA technology has been used for an important project in South America.