Service manual

Always On UPS Systems Inc
4
4. 12 PULSE RECTIFIER TOPOLOGY DRAWING
Figure 4.1
A
lwa
y
s “On” UPS S
y
stems
Topology - 3 Phase UPS 12 Pulse Rectifier
Input: 3PH-4W Output: 3PH-4W
Zero Degrees Phase Shift
N
T
S
OUTPUT
R
12 PULSE RECTIFIER
RESV
R
T
N
FIL
S
INPUT
INPUT
BAT. NEG.
BAT. POS.
FILTER
RECV
AUTO-TRANS
FILTER
RECTIFIER
RESERVE
P.S.
BYPASS
STATIC SWITCH
INVERTER
FIL
OPV
STATIC SWITCH
P.S.