UPS Common system configurations are N system,N+X system,2N system.
RS485 The interface only supports two-wire system, not four-wire system.
When the mains input range is voltage:150-260VAC,frequency:45-60Hz,the following ups Working range ____________ It can work normally in the inverter state of the main circuit.
For unsaturated air, dry bulb temperature, wet bulb temperature, A The relationship between point temperature is ____________ .