首页>
外国专利>
Voltage supply control system for e.g. air conditioning appts. - uses relays operated with predetermined delays when voltage limits are exceeded
Voltage supply control system for e.g. air conditioning appts. - uses relays operated with predetermined delays when voltage limits are exceeded
展开▼
机译:电压控制系统,例如空调设备。 -当超过电压极限时,使用具有预定延迟的继电器
展开▼
页面导航
摘要
著录项
相似文献
摘要
The supply voltage is controlled with predetermined delays to be switched when the voltage goes outside upper and lower limit values. An alternating mains supply is connected to an air conditioning compressor via a control system. This comprises a relay whose contacts cut the supply when it exceeds a max. value. A second relay has contacts which operate when a min. predetermined value is reached. A third relay has contacts which cut the supply when it falls below a third predetermined value for a predetermined delay period. This value is equal to or greater than the min. value and takes account of the starting current to avoid breaking the compressor circuit. A reset circuit re-establishes connectios after a delay period when the supply returns to normal.
展开▼