Aastra AXD User Manual

Installation and Maintenance Manual - Aastra 5000 AMT/PTD/PBX/0058/4/6/EN
Description des sous-ensembles 01/2011 Page 135
4.2.4.3 Monitoring
Two 3.15 A fuses located upstream from the rectifier are used to isolate the power supply
module in case of overvoltage.
An F300 (6.3 A) fuse inside the power supply module (see Figure 4.5 ) protects the power
supply in case of polarity inversion when connecting the battery.
The converter monitors the voltage on the battery terminals, and stops when this voltage
drops below a threshold set at 43V. This device prevents deep discharging of the battery
in the absence of mains or failure/shutdown of the rectifier.
When the 2 fans are detected as stopped simultaneously, the power supply is cut off
automatically; restarting is possible only through an On/Off sequence.
Figure 4.5 OVERVIEW OF THE ADS 300X MODULE
P
B
X
_
M
A
T
R
I
X
_
X
L
_
A
D
S
_
C
O
T
E
_
0
1
_
0
2
Battery connector
"I/O" switch
Mains socket
Fuse holder
Fans
Securing screw
40V ISDN
Internal F300 fuse

Aastra AXD Specifications

General

Brand	Aastra
Model	AXD
Category	Server
Language	English