Battery Operation: Load Power Supplied By Ups Battery; Figure 3-3 Single Line Diagram - Battery Operation: Load Fed By Battery - Toshiba G2020 Series Installation And Operation Manual

In the event of a load overcurrent, the UPS transfers to bypass without interruption to the critical load. In the case of the
Parallel Operation, all UPS will transfer to bypass without interruption to the critical load.
The internal control system determines the operation of the two paths, with the load powered from the inverter being the
normal operation.
3.2.3

Battery operation: Load Power supplied by UPS battery.

CB
Bypass
input
User
supplied
MCCB
CB
AC input
User
supplied
MCCB
Figure 3-3 Single Line Diagram – Battery Operation: Load fed by Battery
Figure 3-3 shows that in the event of AC input source failure or interruption, the UPS Converter(s)* will de-energize and the
UPS battery(s)* will immediately discharge and supply DC power to the Inverter to maintain continuous AC power to the
load. This operation will continue until:
a) The battery capacity expires and the inverter turns off, or
b) Input power is restored. (When input power is restored the converter will simultaneously power the inverter and
critical load, and recharge the batteries.)
A fully charged battery will provide power for the specified time at the rated load, or longer, at a reduced load.
G2020 Series UPS Installation and Operation Manual – 94861-004
UPS Module
CONVERTER
/ CHARGER
CB1
Battery Cabinet
CB2
External
BATTERY
52S
CB3
Static Transfer
Switch
INVERTER
52C
Power Flow
Not in Use
* (s) : In the case of the Parallel Operation
Output
11