Operating instructions

8
2 General information
2.1 Technology
i
The PROTECT D is an Uninterruptible Power Supply
(UPS) for such essential loads as PCs, workstations,
servers, network components and similar load
devices, consisting of:
 Network filter with overvoltage protection (device protection /
Class D) and mains energy backfeed protection
 Rectifier with PFC logic (power factor correction unit)
 Separate intelligent battery charger
in switch mode power supply technology
 Valve regulated battery system, maintenance-free design
as energy storage with downstream DC/DC booster
 IGBT inverter for the continuous supply of connected loads
with sinusoidal AC voltage
 Automatic bypass as additional passive redundancy
 Regulator on the basis of digital signal processor technology
PFC
Rectifier
Inverter
Battery
charger
Battery system
DC/DC booster
Filter
Mains
filter
Mains
Load
RS232
USB
SNMP
DSP
Control logic
Component diagram
Automatic
Bypass
Emergency
Power Off
Relay
contact