1. © ABB Group - Only for internal use July 15, 2015 | Slide 1 Dry type transformers Zaragoza Transformers for outdoors operation Name, department/event, date

2. © ABB Group - Only for internal use July 15, 2015 | Slide 2 ABB in Zaragoza: Dry type transformers for outdoors operation Special outdoors operation design Optional accesories Index

3. © ABB Group - Only for internal use July 15, 2015 | Slide 3 ABB in Zaragoza: Dry type transformers for outdoors operation  Dry type transformers normaly operate indoors, however provided with a special design, ABB Zaragoza dry type transformers can also operate in outdoors installations.  ABB in Zaragoza has large experience manufacturing transformers for outdoors use, as well as different solutions depending on the site where the transformer will operate.  Several hundreds dry type transformers for outdoors operation have already been manufactured by ABB Zaragoza, one of the most experienced and expert factories manufacturing dry type transformers worldwide.

4. © ABB Group - Only for internal use July 15, 2015 | Slide 4 ABB in Zaragoza: Dry type transformers for outdoors operation Special outdoors operation design Optional accesories Index

5. © ABB Group - Only for internal use July 15, 2015 | Slide 5 Special outdoors operation design Protection degrees Special roof in order to avoid water leakage. Detail IP23Detail IP33

6. © ABB Group - Only for internal use July 15, 2015 | Slide 6  Enclosure openings are provided of a special mesh, which will avoid water entrance to the enclosure. Special outdoors operation design Protection degrees Detail IP44 inner side Detail IP44 outer side

7. © ABB Group - Only for internal use July 15, 2015 | Slide 7 In case of direct high sunlight, external roof protection is recommended. Special outdoors operation design Protection degrees Vacuum cast coil transformer for petrochemical application.

8. © ABB Group - Only for internal use July 15, 2015 | Slide 8 Special outdoors operation design Outdoors operation enclosures  The choice of the painting procedures depends on the corrosive ambient in which the transformer will operate:  C3H  C4H  This special procedures assures a high durability of the painting. IP23

9. © ABB Group - Only for internal use July 15, 2015 | Slide 9 ABB in Zaragoza: Dry type transformers for outdoors operation Special outdoors operation design Optional accesories Index

10. © ABB Group - Only for internal use July 15, 2015 | Slide 10 Optional accesories  Transformers for outdoors operation, may be equipped with some space heaters which will avoid condensation in the coils surface.  In order to avoid lightning damage, transformers can be equipped with surge arresters.  Marshalling box IP65 also available. Space heaterSurge arrester

11. © ABB Group - Only for internal use July 15, 2015 | Slide 11 Optional accesories  Depending on the relative humidity and the corrosive ambient of the site where transformers will be installed:  metalic parts can be galvanized,  Low Voltage coils can be sealed or encapsulated. Low Voltage sealed Low Voltage casted Cooling system

12. © ABB Group - Only for internal use July 15, 2015 | Slide 12 ABB in Zaragoza: Dry type transformers for outdoors operation Special outdoors operation design Optional accesories Index