Alcatel Lucent 130B S-1 Power Unit (PWPQ08B)

The Alcatel Lucent 130B S‑1 (also designated PWPQ08B) is a robust DC power supply module designed for use in telecom and networking chassis. This unit converts nominal -48 VDC input from a battery or rectifier system into regulated DC voltages required by line cards, control modules, and fabric boards. It is a critical component for ensuring continuous, reliable power delivery in central office, data center, and remote site installations.

Overview

The 130B S‑1 power unit is a field‑replaceable, hot‑swappable module that fits into dedicated power bays of the chassis. It features high‑efficiency switching topology with active load sharing for parallel redundancy (N+1). The module includes comprehensive protection against over‑voltage, over‑current, over‑temperature, and reverse polarity. It communicates with the chassis management system via I²C bus for real‑time monitoring of output voltage, current, and temperature.

Key Features

• Input: -40 to -72 VDC (nominal -48 VDC)

• Output: +3.3V, +5V, +12V (or single +48V, depending on variant)

• Output power: up to 600 W

• High efficiency > 88% at typical load

• Hot‑swappable for zero‑downtime replacement

• Over‑voltage, over‑current, over‑temperature, and short‑circuit protection

• Active current sharing for parallel redundancy

• I²C monitoring interface

Technical Specifications

• Input Voltage Range: -40 VDC to -72 VDC

• Input Current: 18 A max

• Output Voltages: Typically +3.3V/40A, +5V/20A, +12V/15A (or +48V/12A)

• Total Output Power: 600 W

• Ripple & Noise: < 50 mV on each rail

• Efficiency: > 88% at full load

• Isolation: 1500 VDC input‑to‑output

• Operating Temperature: 0°C to 50°C

• Dimensions: 132 mm (H) × 86 mm (W) × 280 mm (D)

• Weight: 2.8 kg

Applications

This power unit is used in Alcatel Lucent chassis such as the 7750 SR, OmniSwitch, and optical transport platforms, providing reliable DC power for all internal modules.

Management and Monitoring

The module provides real‑time telemetry to the chassis controller, allowing administrators to monitor voltage, current, and temperature via CLI or SNMP. Alarms are generated for out‑of‑tolerance conditions.

Installation and Maintenance

Insert the module into the power slot and secure with ejector handles. The system automatically balances load with other installed power supplies. Maintenance includes cleaning air vents and replacing the module if a fault is indicated.

Conclusion

The Alcatel Lucent 130B S‑1 power unit delivers reliable, efficient power conversion with full protection, ensuring the stability and uptime of critical network systems.