AEG Protect B Operating Instructions Manual page 54

54
EN
Mains Mains
supply
filter
Rectifier
Protect B UPS block diagram
The bypass switch is activated in the event of a power failure. After this,
the inverter takes over the power supply of the connected loads to pre-
vent the risk of data loss or damage to the loads. The Protect B supplies
voltage until the battery is discharged or your EDP system has been
properly shut down and switched off.
This autonomy time mainly depends on the connected load. If the mains
supply shows normal values again, the UPS switches the loads back to
mains supply. The battery charge rectifier then recharges the battery.
For safety reasons (according to the VDE [German Association for
Electrical, Electronic and Information Technologies]), the mains input
in the device is switched off at two poles in the event of a power failure.
This prevents feedback into the mains supply and voltages at the poles
of the mains plug.
Additional measures also guarantee effective protection of the
data/network interfaces.
AVR
~
Battery
~
Inverter
Load