15. Monitoring, Status & Maintenance · 第 1/6 頁
Local Status Indicators
Green/red windows and what operators should do.

Normal
Indicator shows healthy / in-service state per manufacturer legend.
Fault / end of life
Replace cartridge or device promptly. The circuit may be unprotected even if loads still run.
Training
Add SPD checks to monthly facility rounds—especially before rainy seasons.
