Product Overview

• Part No: VPS, 12004-102-03, V1.0.0
• Brand: ALSTOM

• Category: VPS Voltage Power Supply BoardVPS 12004-102-03 V1.0.0 is a Eurocard plug-in power conversion board designed for ALSTOM SBS serial bus control rack system. V1.0.0 represents firmware version.The module accepts 24 VDC input from rack backplane, and converts it into multiple groups of stable regulated DC power to supply SBS communication boards and signal interface modules. It integrates EMI filtering, overvoltage, overcurrent, short-circuit and thermal shutdown protection to prevent power anomalies from damaging other control cards. Front panel LED indicators visually display power operating status for convenient on-site inspection. With built-in surge suppression and isolation circuits, it maintains stable power output under heavy electromagnetic interference inside turbine governing cabinets. It is obsolete original maintenance spare widely used for overhaul of thermal power and combined-cycle power plant steam turbine control systems equipped with SBS bus.

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Core Features

• Multi-channel regulated DC power output for SBS serial bus communication modules
• Comprehensive protection: overvoltage, overcurrent, short-circuit and over-temperature protection
• Front panel LED status indicators for power normal operation and fault alarm
• Standard Eurocard draw-out design supporting fast on-site replacement
• Reinforced multilayer PCB with gold-plated edge connectors for anti-vibration performance
• Built-in EMI filter and transient surge protection for harsh power station environments

• Passed EMC, vibration and wide-range thermal cycling reliability verification

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Technical Specifications

• Input Power: 24 VDC backplane supply
• Firmware Version: V1.0.0
• Operating Temperature: -10°C ~ +60°C
• Storage Temperature: -40°C ~ +85°C
• Form Factor: Standard Eurocard rack plug-in printed circuit board

• Protection Class: IP20 when installed inside control cabinet

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Compatibility & Application

• Compatible with ALSTOM control racks fitted with SBS serial bus communication modules
• Widely deployed in thermal power plants, combined-cycle power stations and industrial captive power plants
• Provides stable working power for SBS bus station modules, supporting remote I/O communication of turbine governing system