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UPS for 480 Vac Grid, User Guide, doc. rel.4.0
charging the UPS batteries. In a typical UPS in ECO Mode this can provide a cost savings of
2 or 3 percent of power consumption.
The downside is that the load can be directly exposed to the mains power for fractions of a
second, without the power conditioning provided by the rectifier and the Inverter. This can occur
if the UPS is too slow to "wake up" in time to fully protect the UPS from, say, a voltage spike or
some other anomaly.
The advantages and disadvantages of an ECO Mode UPS must be weighed against each other. A
UPS operating in ECO Mode can be effective in a situation where the critical load is not super-
sensitive to input power anomalies, and where the mains power is predictably stable. The
advantages of an ECO Mode system can include a cost savings.
Operational parameters for the battery test can be found in Section 8.2.4.1.
To enable ECO Mode (without Analyze Grid mode) on the UPS:
1.
Switch to user in Technician mode.
2.
From the System Menu navigate to Setup > System > System type > ECO Mode.
The ECO Mode screen appears:
Figure 139: ECO Mode screen
3.
Select Enabled.
