Development and application of new type air door automatic closing equipment 新型风门自动闭锁装置的研制与应用
Automatic shut - off circuit 自动闭锁电路
Automatic shutoff circuit 自动闭锁电路
The differential protection is locked when switching the current and voltage , and the misoperation of differential protection is reduced 在电流、电压回路切换时自动闭锁差动保护,减少了保护误动的机率。