Automatic Stand-by Power Switching Device
automatic throw-in device of stand-by power(APD)
auto-switch-in device of stand-by power supply
stand-by power capacity
stand-by power consumption
stand-by power transferring automatically equipment
automatic stand-by device of emergency power supply
power-by-power load-rejecion
auto-switch-in device of stand-by supply
Criteria of stand-by state