MITSUBISHI ELECTRIC 1100B SERIES UPS
1100B SERIES UPS
OWNERS / TECHNICAL MANUAL
Page Number:
1-11
1.4 OPERATION OVERVIEW
The UPS provides two power paths between the utility source and the critical load. Figure 1
shows the path for normal operation, with the load powered from the inverter. Figure 2 shows
the path for bypass operation, with the load supplied through the static bypass line.
A) Normal operation:
Load power supplied by UPS inverter.
Figure 1
Single Line Diagram - Normal Operation: Load Powered by UPS Inverter
During normal operation, the path through the UPS inverter is used to power the load.
Referring to Figure 1: Input AC power is converted to DC by the Converter. DC power is utilized
to charge the UPS battery and to provide power to the Inverter. The Inverter converts the DC
power to clean AC power to supply the critical load.
The conversion - inversion process eliminates any voltage transients or fluctuations existing in
the input power before it reaches the critical load.
WARNING: For the protection of the UPS and cables, the Bypass input
circuit breaker (MCCB) is field supplied and field installed (see
WARNING 4 on page 1-8).
WARNING
UPS Module
Power Flow
AC
input
CB
3
CONVERTER
/
CHARGER
Output
52
C
Static Transfer
Switch
52S
72B
MCCB
User
supplied
CB
52RC
INVERTER
Not in Use
BATTERY
External Battery
Bypass
input
MCCB
User
supplied
CB
Содержание 1100B Series
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