IP ratings (per IEC 60529, marked IP XY; X: 0-6 solid protection, Y: 0-8 water protection) greatly impact inverter lifespan. Dust reduces heat dissipation, accelerating component aging; water causes short circuits/corrosion. High-dust/humidity/coastal areas need ≥IP65, boosting MTBF by 20%-30%.
Global standards like NEMA (US), JIS (Japan), GB/T (China) relate to IP. E.g., IP65≈NEMA 4X (salt-fog resistant)≈JIS IPX5. Environment-specific ratings: deserts need IP66-67 (+25% lifespan), coastal IP67/NEMA 4X (+30-40%). A coastal plant’s failures dropped after upgrading to IP67+NEMA 4X. Select per location, maintain regularly for PV project ROI.
Global standards like NEMA (US), JIS (Japan), GB/T (China) relate to IP. E.g., IP65≈NEMA 4X (salt-fog resistant)≈JIS IPX5. Environment-specific ratings: deserts need IP66-67 (+25% lifespan), coastal IP67/NEMA 4X (+30-40%). A coastal plant’s failures dropped after upgrading to IP67+NEMA 4X. Select per location, maintain regularly for PV project ROI.