All Case StudiesRenewables
String Solar Inverter
Power
100kW
Result
Outdoor IP66 design
Industry
Renewables
OF
The Challenge
A renewable energy company required an outdoor-rated 100kW string inverter capable of operating in desert environments with 60°C ambient temperatures and high dust exposure. The design needed IP66 protection while maintaining thermal performance without active cooling to maximize reliability. The product also required compliance with NEC 2020 rapid shutdown requirements.
Our Approach
- Designed fully sealed IP66 enclosure with passive cooling
- Implemented large-area aluminum heat sink fins for natural convection
- Selected wide-bandgap SiC devices to reduce switching losses
- Optimized internal layout for thermal stratification management
- Added conformal coating for humidity and contamination protection
- Validated thermal performance through environmental chamber testing
Results
IP66
IP Rating
Dust-tight, high-pressure water resistant
60°C
Max Ambient
Full power operation maintained
250,000 hrs
MTBF
No moving parts, high reliability