AMT/PTD/PBX/0058/4/6/EN Installation and Maintenance Manual - Aastra 5000Page 128 01/2011 Description des sous-ensemblesThe rectifiers of several power supplies can be connected in parallel to a battery.The rectifier can be connected to a 115 V or 230 V (+/- 10%) mains, 50 Hz or 60 Hz,without configuration,• two fans supplied by the converter 12V DC voltage draw air towards the rear of thecabinet.4.2.2.3 MonitoringTwo 3.15 A fuses located upstream from the rectifier are used to isolate the power supplymodule in case of overvoltage.An F300 (6.3 A) fuse inside the power supply module (see Figure 4.3 ) protects the powersupply in case of polarity inversion when connecting the battery.The converter monitors the voltage on the battery terminals, and stops when this voltagedrops below a threshold set at 43V. This device prevents deep discharging of the batteryin the absence of mains or failure/shutdown of the rectifier.When the 2 fans are detected as stopped simultaneously, the power supply is cut offautomatically; restarting is possible only through an On/Off sequence.Figure 4.3 O VERVIEW OF THE ADS300 XD MODULEIndicatorsMains socketFuse holderFansSecuring screwInternal F300 fuse"I/O" switch
