الوصف
The GE DS3800HLCB is a specialized LCI Contact Interface Board used in the GE Speedtronic Mark IV series of turbine control systems. As a legacy part, it’s no longer in production and is primarily used for maintaining older systems.
Function and Purpose
The primary function of the DS3800HLCB is to serve as an interface for a Load Commutated Inverter (LCI) system. An LCI is a type of power converter used in high-power applications, often for starting large turbines and generators. This board’s key roles include:
- Contact Interface: It provides the electrical interface for monitoring and controlling the contacts within the LCI system. This allows the main control system to send commands to the LCI and to receive feedback on the status of its components.
- Signal Conditioning: The board conditions the signals between the LCI and the main control board, ensuring they are clean, stable, and free from the electrical noise inherent in high-power systems.
- System Integration: As a modular board, it allows for easy integration into the larger Mark IV system, providing a dedicated pathway for the control and monitoring of the LCI.
Technical and Design Features
The DS3800HLCB is a robust, industrial-grade circuit board designed to operate in a demanding environment.
- Legacy Part: The “DS3800” prefix indicates that it belongs to the legacy Mark IV series. This system was a pioneering microprocessor-based gas turbine control system from GE.
- Number of Channels: The board has 12 channels to support its interface functions.
- Operating Voltage: It is designed to operate with a 24 V DC input voltage.
- Temperature Range: It can operate in a wide temperature range, from -40 to +70 °C.
- Trimmers and EPROMs: The board is populated with eight trimmer resistors and an EPROM (Erasable Programmable Read-Only Memory), which are used for configuration and to store firmware.