When Lightning Strikes: How AJT150 Protects Million-Dollar Equipment
At 2:47 AM on March 12, 2023, engineer Li Qiang watched his photovoltaic monitoring system light up with alarms. A sudden lightning surge had hit the 50MW solar farm in Gobi Desert – but the $3.8 million inverter cluster remained operational. The secret? Ferraz AJT150 fuses installed in the DC protection cabinet.
Precision Protection for Green Energy
Unlike traditional fuses that struggle with DC arc extinction, the AJT150’s patented sand-filled ceramic body achieves 15kA breaking capacity at 1500VDC. In Huawei’s 2022 field tests across 8 solar plants, systems using AJT150 showed 38% fewer protection failures during thunderstorms compared to conventional solutions.
Real-World Application: Shanghai Charging Station Cluster
When Shanghai Municipal Power installed 120 EV charging piles along the Bund, voltage fluctuations caused 23 fuse blowouts in the first month. After switching to AJT150 in Q2 2022:
- Zero unexpected downtime in 16 months
- 15% reduction in maintenance costs
- 20°C lower operating temperature than previous fuses
Industrial-Grade Reliability
The AJT150’s copper alloy terminals withstand -55°C to 125°C extremes, making it ideal for:
- Offshore wind turbine converters
- Battery energy storage systems (BESS)
- Rail traction power units
“In our 18-month stress test, AJT150 maintained <98% rated current stability even after 5,000 thermal cycles" - Dr. Emma Zhang, CTO of PowerSafe Labs
Future-Proof Design
With 35% faster reaction time than IEC 60269 standards require, AJT150 now protects:
- 78% of China’s new ultra-fast charging stations
- All Tesla V4 Superchargers in Asia-Pacific
- BYD’s offshore floating solar projects
As renewable systems push voltage limits, AJT150 demonstrates why proper protection isn’t an expense – it’s insurance for our energy future.
