Checking The Site Wiring Fault Led - GE Digital Energy GT Series User Manual

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Fig. 2.5 Stand-by mode
Though the batteries (the internal energy reserve) were fully charged when the UPS left
the factory, they might have lost some energy during transport and/or storage. It is
recommended to allow the UPS to recharge the batteries for at least 6 hours. This way
you ensure that the UPS can provide sufficient runtime in case of a utility power failure.
2.4.6

Checking the site wiring fault LED

When the UPS is still in 'STAND-BY' mode, check the site-wiring fault LED. If the UPS
is plugged into an improperly wired AC utility power outlet, this LED flashes as shown in
Fig 2.6.
Fig. 2.6 Site wiring fault
The detection of site wiring faults includes a missing ground, phase-neutral polarity
reversal and an overloaded neutral circuit. If the LED flashes, unplug the UPS and have
the site wiring checked by a qualified electrician.
This step completes the installation procedure.
OPM_GTU_TWR_1K0_3K0_XUS_V015
Digital Energy GT Series
9 DE GT Series: User manual rev date 8-11-04