19
Input
terminal
Power module 1
Output
terminal
Power module n
Power modules
Extra charger modules
Charger module 1
Charger module m
Battery
terminal
Fig. 15.
Conceptual diagram of the extra charger modules.
4.3.3. UPS operating modes.
The modular double-conversion on-line UPS has the following
operating modes:
•
Normal mode
•
Battery mode
•
Bypass mode
•
Maintenance mode (manual bypass)
•
ECO mode
•
Frequency converter mode
During the description of the operating modes the operation
is described referring to the PFC-rectifier and inverter parts as
functional parts of a module, although there will be as many of
them as there are modules connected in parallel.
4.3.3.1. Normal mode.
The inverter of each power module is responsible for powering
the critical loads at all times. The rectifier/charger of the AC
input powers the inverter with DC voltage while simultaneously
charging the associated backup battery, either at float or quick
voltage.
PFC rectifier
AC / DC
BAT / DC
DC / DC Battery
Charger
Inverter
DC / AC
Static bypass
Manual bypass
Batteries
AC input
Bypass
AC input
Rectifier
AC output
Connection strips between
phases for mains.
Fig. 16.
Conceptual diagram of the UPS in Normal mode.
Indicates the direction of the energy flow.
4.3.3.2. Battery mode.
In the event of failure of the AC input power mains, the inverter,
by means of the power it obtains from the battery, supplies the
critical loads of the output in AC. By doing so, the power supply
is not interrupted in the event of failure. Once the AC power
input is restored, the ‘Normal mode’ function will be restored
automatically without the user needing to intervene.
PFC rectifier
AC / DC
BAT / DC
DC / DC Battery
Charger
Inverter
DC / AC
Static bypass
Manual bypass
Batteries
AC input
Bypass
AC input
Rectifier
AC output
Connection strips between
phases for mains.
Fig. 17.
Conceptual diagram of the UPS in Battery mode.
With the Battery Cold Start function, the UPS can be
started without mains power. See details in section
6.1.2.
SLC ADAPT
UNINTERRUPTIBLE POWER SUPPLY (UPS)
USER'S MANUAL
Summary of Contents for SLC ADAPT Series
Page 1: ...SLC serie ADAPT 180 300 y 500 kVA UNINTERRUPTIBLE POWER SUPPLY UPS USER S MANUAL...
Page 12: ...12 SALICRU Fig 8 Front view of 10 slot cabinet 500 kVA 300 kVA at 3x208 V with closed doors...
Page 64: ...64 SALICRU...
Page 65: ...65 SLC ADAPT UNINTERRUPTIBLE POWER SUPPLY UPS USER S MANUAL...