Product Overview

• Part No: NRD108033, 8RDC44667G01, SA44667.C
• Brand: ALSTOM

• Category: Digital Interface & Signal Processing Control ModuleNRD108033 8RDC44667G01 SA44667.C is a standard Eurocard draw-out printed circuit board deployed within ALSTOM legacy turbine control architecture. It serves as a critical signal interface between backplane bus, main processors and field I/O modules, performing multi-channel digital signal acquisition, logic conversion and bidirectional data forwarding. The module processes status feedback signals from actuators, valves and auxiliary equipment, and transmits control commands issued by master controllers. Equipped with built-in signal filtering, surge suppression and channel isolation circuits, it maintains stable communication under heavy electromagnetic interference in power plant control cubicles. It is a discontinued original maintenance spare widely used for overhaul of thermal power turbine monitoring and governing control systems.

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Core Features

• High-speed digital signal acquisition and protocol conversion for field I/O communication
• Galvanic isolation between signal channels to suppress interference and crosstalk
• Front panel LED diagnostic indicators for real-time module status and fault detection
• Standard Eurocard rack plug-in design supporting rapid on-site replacement
• Reliable backplane bus interface for seamless data exchange with other system modules
• Reinforced multilayer PCB layout with ESD and transient overvoltage protection

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

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Technical Specifications

• Operating Supply: 24 VDC
• Operating Temperature: -10°C ~ +60°C
• Storage Temperature: -40°C ~ +85°C
• Form Factor: Standard Eurocard rack plug-in PCB

• Protection Class: IP20 when installed inside control cabinet

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Compatibility & Application

• Compatible with ALSTOM legacy steam turbine governing and distributed control platforms
• Widely deployed in thermal power plants, combined-cycle power stations and captive power facilities
• Applied for turbine auxiliary equipment status collection, valve logic control and interlock signal transmission