A VR course for power marketing staff focused on field safety and fault handling in low-voltage centralized meter reading. A virtual meter box scene solves the pain points of high field risk, hard-to-reproduce faults and invisible violations. Three tracks — practice, accident and assessment — reproduce the whole workflow: printing work permits, pre-shift briefing, tool selection, and handling five typical faults (weak concentrator signal, antenna fault, SIM card fault, module fault, parameter error), plus climbing and part replacement drills.