介绍一种具有干燥、照明和充电系统的演示实验装置，该装置使平行板电容器在演示时能保持所带电荷基本不变。
A parallel plate condenser with installation of drying air, lighting and charging is provided, which can keep charge numbers constant in demonstration experiment.
定期检查各开关，操作机构，保护装置，变压器，电容器，UPS照明设施等设备的工作状况；
Periodic check the breaker, switchgear, operation unit, protection device, transformer, capacitor, UPS, lighting fixture working status;
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