Product Overview

• Part No: 12004-102-01, VPS BOARD, VER.C
• Brand: ALSTOM

• Category: VPS Voltage Power Supply Board12004-102-01 VPS BOARD VER.C is a standard Eurocard plug-in power supply board matched for ALSTOM SBS serial bus turbine control racks. VER.C stands for PCB hardware revision version C.This module serves as the internal power conversion and distribution unit for SBS bus communication assemblies. It converts the rack input supply into multiple stable regulated DC voltage rails for SBS station communication modules, signal circuits and interface hardware. It integrates EMI filtering, overvoltage, overcurrent and short-circuit protection functions to avoid power fluctuation damage to adjacent communication boards. Equipped with power status LED indicators, it supports real-time power operation monitoring. Built-in surge suppression and isolation circuits guarantee steady power output under severe electromagnetic interference inside turbine governing cubicles. It is an obsolete essential maintenance spare for overhaul of thermal power and combined-cycle power plant steam turbine control systems with SBS bus architecture.

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Core Features

• Multi-channel regulated DC power generation for SBS serial bus communication modules
• Comprehensive protection: overvoltage, overcurrent, short-circuit and thermal protection
• Front panel LED indicators for power running status and fault alarm
• Standard Eurocard draw-out structure supporting rapid on-site replacement
• Reinforced multilayer PCB with gold-plated edge connectors for anti-vibration performance
• Integrated EMI filter and transient surge protection adapting harsh power station environments

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

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Technical Specifications

• Input Supply: 24 VDC backplane power
• Hardware Revision: VER.C
• 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 equipped with SBS serial bus communication modules
• Widely deployed in thermal power plants, combined-cycle power stations and captive power facilities
• Supplies stable working power for SBS bus station boards, supporting turbine governing remote I/O communication