Alcatel-Lucent 3AL81502AA03 PSF Power Supply Unit

The Alcatel-Lucent 3AL81502AA03 PSF is a power supply unit designed for reliable DC power distribution and conversion in optical transport network platforms and telecommunications equipment racks. This module provides regulated −48 V DC power distribution to installed line cards, service interface boards, cross-connect modules, control units, and other shelf-resident equipment in transport platform enclosures. The PSF (Power Supply Frame/Filter) unit implements redundant power feed architecture with integrated filtering and protection circuitry to ensure clean, stable power delivery with minimal voltage ripple and electromagnetic interference (EMI). The module features automatic load sharing between redundant power feeds, overcurrent protection with resettable circuit breakers, overvoltage protection, reverse polarity protection, and hot-swappable design enabling field replacement without service disruption. Advanced features include input voltage monitoring, output current monitoring, temperature sensing, power good status indication, and alarm reporting for undervoltage, overvoltage, overcurrent, and overtemperature conditions. The power supply unit connects to the transport shelf backplane for power distribution to installed modules and communicates with the system control processor through I²C or SMBus interfaces for remote monitoring and management. Management interfaces include SNMP v3 and TL1 protocols for integration with Alcatel-Lucent's 1350 OMS and third-party network management systems, providing access to input voltage, output current, temperature readings, and alarm conditions. The module features robust electromagnetic compatibility (EMC) filtering per EN 300 386 and FCC Part 15 Class A standards to prevent conducted and radiated interference. Environmental specifications comply with ETSI EN 300 019 Class 3.1 and NEBS GR-63 Level 3 standards, supporting continuous operation in controlled telecommunications facilities with ambient temperatures from 0 °C to +45 °C and relative humidity up to 95% non-condensing. The PSF unit is validated for deployment in Alcatel-Lucent 1650SM/1660SM/1670 series transport platforms and ensures compliance with Telcordia GR-487, ETSI EN 300 132, and NEBS GR-487 standards for telecommunications power systems and distribution equipment.