BYPASS MODE OPERATION
The UPS will automatically transfer to Bypass Mode in the event it is overloaded, experiences an
internal failure and for the conditions listed below. When in bypass, the UPS will transfer the con-
nected load directly to the incoming utility power.
When in bypass mode, Battery Mode will not be
available
. However, the utility power will continue to be passively filtered by the UPS. Additionally,
the UPS will sound an audible alarm and switch to Bypass Mode automatically upon the following
conditions:
* The UPS has experienced an over temperature condition.
* The UPS has experienced an overload condition of 101 to 110% for over 120 seconds.
* The UPS has experienced an overload condition of 111 to 150% for over 20 seconds.
* The UPS has experienced an overload condition of over 150%.
* The UPS detects a fault in the battery or UPS electronics.
The LCD display icon configuration on the left indicates the UPS is in
Bypass Mode. The dark solid line shows the input connected directly to
the connected load. Another dark solid line shows the input power to
the battery charger icon, then to the battery. The Fan is shown in low
speed mode.
GREEN MODE OPERATION
When Green Mode is turned on using the UPS programming interface, the SSG unit will automatical-
ly switch to "Green Mode" (Bypass Mode), once the connected load drops to less than 3% of the
UPS’s rated output. The load will operate directly from utility power, similar to Bypass Mode. The
LCD display will indicate the UPS is in Bypass Mode, the Green Mode bulb icon will be flashing. If
the load is increased to over 3% of the UPS output rating, the UPS will automatically switch back to
normal on-line operation. All SSG models are shipped from the factory with Green Mode turned off.
To enable Green Mode, refer to the section on UPS Setup, Configuration & Programming. See the
green mode configuration section for further details and cautions.
How to Turn On the UPS (with utility power)
Once installation has been complete, the UPS can be powered up. With utility power present, turn
on the UPS input circuit breaker located on the front panel. The UPS will enter an Auto-Test state
and all of the LCD indicators will be illuminated flashing for ten seconds and then return to a
normal state. The UPS will start up in bypass mode and after several seconds, should transfer to the
normal on-line mode.
How to DC Start the UPS (without utility power)
In the event utility power is not available, the UPS may be started up in battery mode. To turn on the
UPS without utility power available, press and hold the "BYPASS" button. The UPS will start on
battery and supply power to the connected loads until the batteries are depleted. Always recharge
the batteries immediately by connecting the UPS to utility power and turning on the UPS input circuit
breaker after any full battery discharge. For DC start operation the load segment control must be set
to Continuous Mode operation.
How to Turn Off the UPS
To turn off the UPS:
While in normal on-line mode
, press the Bypass button for one second. The UPS will go into Bypass
Mode. Next, turn off the input circuit breaker. The unit will shut down after about 30 seconds.
While in battery mode:
Press the Bypass button for one second. The unit will shut down after about
30 seconds.
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