Using of change on neutral point for auto-transformer to achieve tap change by step, lighting lamps can have different effects of power-saving.
照明路灯通过自藕变压器进行调零切换实现有级降压，可以得到不同的节电效果。
Periodic check the breaker, switchgear, operation unit, protection device, transformer, capacitor, UPS, lighting fixture working status;
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;
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；
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