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effective protection against mains voltage peaks and high-
frequency faults.
In case of sustained mains undervoltage or overvoltage within
defined ranges, the automatic voltage regulator (A.V.R.)
further stabilises the load voltage. As a result, voltage
fluctuations in the public utility's mains are reduced to a level
which is acceptable for the loads. This is performed without
recourse to the internal energy storage, something which in
turn has a positive effect on battery availability.
The static bypass switch is activated in the event of a mains
failure. The inverter then takes over the voltage supply of the
connected loads, in order to prevent the risk of data loss or
damage to the loads. PROTECT A. supplies voltage until the
battery is discharged, allowing you to shut down your IT
system properly and switch it off. The standby time mainly
depends on the connected loads. If the mains power supply is
back to normal values, the UPS will switch back the loads to
mains supply. The battery charger will then recharge the
battery.
For safety reasons (as required by German standards, VDE),
the mains input in the unit will be disconnected by a two-pole
switch in the event of a mains failure. Energy backfeed to the
mains and voltage supply to the pins of the mains connector
are thus reliably avoided.