Figure 1.3 Single Line Diagram-Battery Operation - Mitsubishi Electric M9950 Series Technical Manual

MITSUBISHI
ELECTRIC
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.
C) Battery operation: Load Power supplied by UPS battery.
FIGURE 1.3 Single Line Diagram - Battery Operation
52RS
Bypass
input
User
supplied
52R
AC input
User
supplied
Referring to FIGURE 1.3: 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 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.
MITSUBISHI ELECTRIC M9950 SERIES UPS
M9950 SERIES UPS
OWNERS / TECHNICAL MANUAL
UPS Module
52M
52PS
CONVERTER
/ CHARGER
52RC
Battery Cabinet
72B
External
BATTERY
Bypass
Switch
INVERTER
52C
Power Flow
Not in Use
(s)* : In the case of the Parallel Operation
Page Number:
1-9
52L
Output