Specifications

AMT/PTD/PBX/0058/4/6/EN Installation and Maintenance Manual - Aastra 5000
Page 106 01/2011 Description et caractéristiques d’un PBX
Figure 3.21 BLOCK DIAGRAM OF THE POWER SUPPLY CHAIN IN AN AXD CABINET
IN SIMPLEX CONFIGURATION
115 V/230 V
Rectifier
Converter
Fuses
48 V
48 V
Fan
monitoring
Failure
of both
fans
CABINET
POWER SUPPLY
MODULE
Battery
Cards internal circuit
power supllies
Line power supplies
Ringing current
BACKPLANE
CARD
EXPANSION
CARDS
P.sup
UCV-D/RUCV-D
card
"I/O"
0"8?-!42)8?8$?!,)-?3)-0,%8?39./0??
VENTILATION
MODULE
P.sup
P.sup
Alarms
inter-
module
signals
P.sup