Normal Operating Modes - Eaton 93PS-8(20)-20(-C) User And Installation Manual

Eaton 93PS UPS 8–40 kW
time, should any abnormal condition be detected in the utility. When
operating in the ESS mode, the load is protected with inherent surge
suppression. Operating the UPS in the ESS mode increases system
efficiency up to 98.8%, allowing significant savings in energy losses
without compromising system reliability
• In the stored energy mode, energy is drawn from a DC backup power source
and converted to AC power by the UPS inverter. Most commonly VRLA
batteries are introduced to the system for this purpose, and the mode of
operation is called the battery mode.
• In the bypass mode, the critical load is supported directly by utility power
through the UPS static switch.
3.2.1
During normal UPS operation, power for the system is derived from a utility input
source. Unit Online is displayed on the front panel, indicating that the
incoming power is within voltage and frequency acceptance windows.
3.2.1.1
4
Figure
UPS is operating in the double conversion mode.
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Eaton Corporation plc 2016. All rights reserved.

Normal operating modes

Double conversion mode
shows the path of electrical power through the UPS system when the
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