Alstom PIB903 VMEbus Series Power Interface Board

Product Overview

The PIB903 is a high-reliability Power Interface Board (PIB) specifically engineered for Alstom’s VMEbus rack systems and BGTR 8HE chassis architectures. Acting as a critical power conversion stage, the PIB903 transforms a standard 220VAC utility input into a stabilized 12VDC output. This regulated DC supply is essential for the operation of downstream VMEbus processors, communication modules, and high-density I/O cards. Built for the rigorous demands of infrastructure control, the module features advanced EMI filtering and high noise immunity, safeguarding sensitive logic circuits from the electrical transients common in railway and power utility environments.

Technical Specifications

The PIB903 provides deterministic power delivery with integrated thermal management designed for continuous industrial duty.

• Manufacturer: Alstom

• Model Number: PIB903

• Component Type: Power Interface Board (PIB)

• System Compatibility: VMEbus standard / BGTR 8HE Chassis

• Input Voltage: 220VAC (Nominal), range ±10% at 50/60 Hz

• Output Voltage: 12VDC (Regulated)

• Output Current: 2 A (Nominal)

• Total Power Rating: 24 W

• Efficiency: Optimized for low thermal dissipation within rack enclosures

• Protection Class: IP20

• Operating Temperature: -20°C to +70°C

• Dimensions: 100 mm x 50 mm x 30 mm (Standard VME slot compatible profile)

• Net Weight: 3 kg (Ruggedized industrial build)

• Mounting Type: Rack-integrated slot mounting

Key Functional Features

• Industrial-Grade Regulation: The PIB903 maintains a steady 12VDC output despite fluctuations in the 220VAC supply, ensuring that VMEbus backplane signals remain stable and error-free.

• Superior Noise Immunity: Equipped with integrated surge suppression and input filtering, the board effectively blocks high-frequency interference often generated by nearby heavy machinery or traction motors.

• Ruggedized Construction: Designed for long-term deployment in unconditioned environments, the PIB903 utilizes high-grade capacitors and a vibration-resistant PCB layout suitable for railway signaling and substation control.

• Passive Cooling Design: The mechanical layout facilitates natural convection airflow, allowing the module to operate at full load across its entire temperature range without the need for active cooling fans.