1. Overview

2. Parameters and Structural Composition

• Heat Sinks: 2 units, dedicated to efficient heat dissipation management to maintain stable operating temperatures of the circuit board and prevent overheating failures.
• Transformers: 2 units, responsible for voltage conversion and electrical isolation, ensuring stable power transmission and protecting internal circuits from voltage fluctuations.
• LED Transistors: 2 units, used for signal indication and circuit control, assisting in real-time feedback of basic operating statuses.
• High-Voltage Capacitors: 3 units, paired with various types of capacitors and resistors of different materials, forming a stable circuit filtering and energy storage system.
• Fuses and Protection Circuits: Built-in 4 fuses and MOV (Metal Oxide Varistor) protection circuits, providing dual safety protection for the circuit board itself and connected peripheral equipment, avoiding damage caused by overcurrent or overvoltage.

3. Product Features

• Overspeed Protection: Controls three overspeed trip relays on the TRPx terminal board, triggering an immediate shutdown when turbine overspeed is detected to avoid catastrophic mechanical failure.
• Flame Detection: Monitors 8 Geiger-Müller flame detectors, enabling real-time detection of abnormal flame conditions in the turbine combustion system and issuing early warnings or protection actions.
• Motor Protection: Monitors induced shaft current and voltage, controls the closing of the main circuit breaker, and supports automatic generator synchronization functions to ensure stable grid connection and operation of generator sets.

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4. Physical Structure and Components

• Main PCB Board: The core carrier of all electronic components, integrating control circuits, protection circuits and signal processing modules, with high integration and stable performance.
• Indicator Lights: The front panel is equipped with status lights, fault lights and run lights, providing intuitive on-site indication of the board’s operating status, facilitating quick troubleshooting and daily inspection by operation and maintenance personnel.
• Interfaces: Configured with dedicated VME interface cards and edge connectors, supporting stable communication with upper computers and other I/O cards, ensuring smooth transmission of control signals and operating data.

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5. Application Fields

• Gas Turbine Power Plants: Applied to the automation control and safety protection of gas turbine units, realizing real-time monitoring and fault protection of core operating parameters.
• Steam Turbine Power Plants: Used in large-scale thermal power plants to monitor the operating status of steam turbines, effectively preventing overspeed, abnormal current and other mechanical and electrical failures.
• Industrial Process Control: Widely utilized in key process control systems across industries including electric power, steel, cement and shipbuilding, providing reliable safety protection for core industrial equipment and ensuring the continuity of industrial production.