Liebert GXT 2U - Manual (Page 21)

Operating Instructions
17
6.0 O
PERATING
I
NSTRUCTIONS
6.1 N
ORMAL
M
ODE
O
PERATION
During normal operation,
utility power provides energy
to the UPS. The filters, power
factor correction circuit and
the inverter process this
power to provide computer
grade power to connected
loads. The UPS maintains
the batteries in a fully
charged state.
The four green load level LEDs indicate an approximate level of load
in 25% increments. If the UPS becomes loaded beyond full rating, the
fifth (amber) LED indicator will illuminate and the UPS will sound an
audible alarm. The display template indicates the percentage of load
(26-50% of load shown in the example above) on the UPS output.
6.2 B
YPASS
M
ODE
O
PERATION
Bypass mode occurs when
the OFF button is pressed
once while the UPS is in
Normal Mode. During bypass
operation, utility power
provides energy to the UPS.
The utility power bypasses
the inverter and provides
power for the connected load.
The four green load level LEDs indicate an approximate level of load
in 25% increments. If the UPS becomes loaded beyond full rating, the
fifth (amber) LED indicator will illuminate and the UPS will sound an
audible alarm. The display template indicates the percentage of load
(26-50% of load shown in the example above) on the UPS output.
!
CAUTION
Turning OFF the UPS while in bypass mode will result in loss
of output power.
Normal Mode Operation at 26-50%
AC INPUT BATTERY UPS ON BYPASS
Bypass Mode Operation at 26-50%
AC INPUT BATTERY UPS ON BYPASS