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Digital Energy™ GT Series

3.2Start-up

3.2.1Start-up, utility power available

1Push the ‘I/TEST’-button (1) and hold for 3 seconds until a short beep is heard. The bypass LED will shortly light up. When the LED ‘On Line’ lights up, the UPS is running in ‘ON LINE’ mode.

2The equipment connected to the UPS

can now be switched on.

Fig. 3.2 On Line mode

3.2.2Start-up, utility power not available

(cold start or battery start)

1 Push the ‘I/TEST’-button (1) and hold for 3 seconds until a short beep is heard. The battery LED and LED ‘On Battery’ will light up. The UPS operates in ‘ON BATTERY’ mode”: it discharges the batteries.

Fig. 3.3 On Battery mode

3.3Use: Normal Operation

3.3.1Normal operation conditions:

∙the utility power supply is present and within allowable tolerances,

∙the load does not exceed the nominal rating of the UPS and

∙the operating temperature is below alarm level

∙the UPS is on,

3.3.2 Normal operation indications:

∙ LEDs ‘Line’, ‘On Line’ and the Load LED are on

∙One or more LEDs on the level bar are on

∙the buzze r is silent

Fig. 3.4 Normal operation

3.3.3UPS self-test

Press the ‘I/TEST’-button (1) when the UPS is in ‘ON LINE’ mode. The UPS will shift to ‘ON BATTERY’ mode and automatically perform a self-test for about

10seconds (as in fig. 3.5). The self-test function will check the condition of the battery. After self-test is finished and test is O.K, the UPS will return to ‘ON LINE’

mode.

Fig. 3.5 UPS self test

OPM_GTU_TWR_1K0_3K0_XUS_V015

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