Program Details

Electro-mechanical voltage anomaly causes system shutdown

Exposure machine downtime

2025-10-13

On September 28, 2025, a voltage sag (caused by lightning or power fluctuations) occurred in the State Grid Huai'an regional grid, leading to the shutdown of multiple PAL and laser exposure machines across the affected area. The specific cause was a sudden drop of 20% to 50% in voltage for tens to hundreds of milliseconds, followed by an instantaneous recovery to the standard 100% voltage level—triggering alarms on the exposure machines' lighting systems and precision laser power supplies. Shenzhen Topworx Power Supply Co., Ltd.'s AVC offers a highly cost-effective solution to address this issue.

Solution