1. Source 1 Heating Elements/Systems for WTGs

2. Source 2 Wind Power Technology Overview on WTG’s heaters

3. Source 3 Wind Power Technology Overview on Typical Heating Elements Installed in WTGs NACELLE Fan-heaters HYDRAULIC SYSTEM, GEARBOX Immersion Heaters (ceramics, cartridges, tubular), Foil Heaters (silicone) COOLING SYSTEM Flow-heaters CONTROL PANEL, GENERATOR Anticondensation Heaters: alu-profiles, small fan-heaters, tubular heaters BRAKES, BACK-UP BATTERY, SENSORS, Tubular, cartridges, foil ELECTRICAL SYSTEM Fan-heaters

4. Source 4 Wind Power Technology Technical Demands for WTG’s Components 5-years warranty 20 years design-lifetime -40°C + 60°C Operative temperature range (surrounding): C3 / C4 salt corrosion class: harsh environment High vibrations level High voltage levels, till 690V (safety-critical) UL-approved products

5. Source Zoppas Industries Major R&D projects 2009-2010 FAN HEATER Stainless steel frame Customized high quality components Re-engineered fan-motor 1° and 2° level of thermal safety Various power / voltage levels available IP54 and UL-ready improved versions available

6. Source Zoppas Industries Major R&D projects 2009-2010 FLOW HEATER Stainless steel structure Based on one-piece-flow process PPAP approach during design phase

7. Source Zoppas Industries Major R&D projects 2009-2010 CHOPPER RESISTOR AISI 316L stainless steel structure Duty-cycle voltage up to 1000V C4 corrosion resistant fan-motor

8. Source Zoppas Industries Major R&D projects 2009-2010 BUFFER TANK HEATER 1 single unit substitutes up to 7 traditional immersion heaters Innovative design featuring easy service of heating elements Improved heating element lifetime Fast plug-in connections

9. Source Zoppas Industries Major R&D projects 2009-2010 DRAIN PIPE HEATER 1 single unit substitutes up to 3 traditional immersion heaters Innovative design featuring easy service of heating elements Improved heating element lifetime Available with different fixing interfaces (flange, nipple, …)

10. Source Zoppas Industries Major R&D projects 2009-2010 SILICONE HEATERS Improved components for corrosion resistance Improved silicone with LSLT characteristics

11. Source Zoppas Industries THANK YOU!