IPSi305W_Manual

1110
Off-line UPS (Optional)
The Off-line UPS (Uninterruptible Power Source) option allows the inverter to function as a
backup power source in the event of external AC power failure.
Legend
AC Power Source
DC Power Source
Inverter
Load
Battery Charger
AC Current
DC Current
NORMAL OPERATION
• The AC power source supplies AC
power to both the battery charger
and the load (Running through the
inverter’s off-line).
• The battery charger supplies DC power
to a battery, maintaining it at full charge.
This battery is connected to the inverter’s
DC Input Connection(s).
Legend
AC Power Source
DC Power Source
Inverter
Load
Battery Charger
AC Current
DC Current
AC POWER FAILURE
• The inverter detects a drop in AC
voltage and starts operation.
• The inverter draws DC power from the
connected battery which inverts it to
AC power to supply the load.
• The inverter continues operating until
it detects that the AC Voltage has been
restored or the battery is discharged.
TO SET UP THE OFF-LINE UPS:
1. Connect the AC power source to the AC Input Connection.
2. Connect the DC power source (batteries) to the DC Input Connection.
3. Connect the load to the AC Output Connection.
4. Turn the inverter ON. The Bypass LED will glow green indicating the load is being
supplied with power from the AC power source through the inverter’s off-line.
5. If the AC power fails, the Bypass LED will turn off and the Invert LED and 50/60Hz LED will
glow green indicating the Inverter is operating.
The AC input voltage thresholds for the inverter to take over supplying and to end supplying AC
power can be changed using InverterWizard to t your specic needs. For more information, see
the InverterWizard manual.
TIP: MAKE SURE THE BATTERIES HAVE WITH ENOUGH CAPACITY TO POWER THE
LOAD FOR THE REQUIRED AMOUNT OF TIME IN THE EVENT OF AC POWER FAILURE.
For example, a 2000 watt Inverter with 24 VDC input will draw ~100 A, so for 2 hours of
runtime the minimum required battery capacity is 280 amps-hours @ 24 volts.