Emerson 000-VA Manuel D’Utilisation

Using the configuration program, the user may specify the number of GXT3-240VBATT external 

battery cabinets attached to the UPS. The factory default is programmed for internal batteries only. 
Table 11 shows the estimated run times at different loads.

As batteries age, the estimated run times may become less accurate. The Liebert GXT3 is 

programmed to “learn” from a full battery discharge and modify the estimated runtime for the 

measured battery capacity. This can improve accuracy and compensate for aging batteries or 

batteries that operate at different ambient temperatures.
The UPS will update the anticipated run time calculation only under certain conditions.

• The UPS must have a steady load that is greater than 20%.
• The UPS must be at 100% charge at the start of a battery discharge.
• The battery discharge must continue uninterrupted until the batteries reach their end-of-

discharge voltage.

If all conditions are not met, the run time calculation will not be modified.
If the configuration program is used to change the number of battery cabinets, then the values in the 

battery above table will be restored. This will override any value that is Auto-Learned.

Internal Battery

+ 4 External 

Battery Cabinets

10%

460

360

316

20%

205

191

163

30%

159

138

137

40%

124

108

107

50%

106

97

82

60%

98

81

69

70%

83

71

52

80%

75

61

48

90%

66

51

44

100%

53

48

40