Emerson 5000-10, 000-VA, 230V user manual Auto-Learning Battery Run Times

Specifications

Table 11 Battery run time, minutes, all models

Number of	Load Percent	230VAC RT Models
Batteries/Cabinets	of Capacity	5kVA	6kVA	10kVA
	10%	460	360	316
	20%	205	191	163
	30%	159	138	137
	40%	124	108	107
Internal Battery
	50%	106	97	82
+ 4 External
	60%	98	81	69
Battery Cabinets
	70%	83	71	52
	80%	75	61	48
	90%	66	51	44
	100%	53	48	40

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.

12.1Auto-Learning Battery Run Times

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.

39 Liebert® GXT3™