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MITSUBISHI ELECTRIC 2033D SERIES UPS
MITSUBISHI
ELECTRIC
2033D SERIES UPS
OWNERS / TECHNICAL MANUAL
Page Number:
1-7
C) Inverter supply at battery operation
FIGURE 1.3 Single Line Diagram - Battery Operation
Referring to Figure 1.3: In the event of AC input source failure or interruption, the
converter will de-energize and the battery 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 after which the converter will power the inverter and critical
load and simultaneously recharge the batteries.
A fully charged battery will provide power for the specified time at the rated load, or longer,
at a reduced load.
When power is restored after a low battery shutdown, the converter automatically restarts
operation, recharges the batteries and the Inverter is automatically restarted without
operator intervention. Load is automatically assumed by the inverter without operator
intervention.
The power drawn by the load is equally shared between all system UPS during battery
operation.
UPS Module
Power Flow
Not in Use
AC input
CB
FB
72B
52RS
CONVERTER
INVERTER
Output
52C
52RC
FI
FO
BATTERY
User
su
pp
lied
52CS
Maintenance
Bypass
Switch
50kVA, 80kVA:
External Battery
Static Transfer
Switch
CB
AC Bypass
In
put