Uninterruptible Power Supplies Online UPS 3K User Manual download pdf (Page 10)

OPM_GTU_TWR_1K0_3K0_XUS_V015

DE GT Series: User manual rev date 8-11-04

Digital Energy GT Serie

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.

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.

Fig. 2.5 Stand-b

mode

Fig. 2.6 Site wiring faul

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Uninterruptible Power Supplies Online UPS 3K User Manual Page 10