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The GE part number IS200EXMDG1A is an EX2100e MD Interface Card. It is a key component of the Mark VIe Excitation Control System, which is the successor to the EX2100. Its primary function is to provide the communication interface between the main exciter controller and the MD (Motor-Driven) field breakers and other auxiliary equipment. ⚙️
Function and Key Features
This board is part of a system designed for high reliability and seamless integration with other plant equipment.
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- Communication Interface: The EXMD board handles the digital and analog communication signals necessary to control and monitor the motor-driven field breakers. These breakers are essential for controlling the flow of power to the generator’s field windings.
- Control of Auxiliary Equipment: In addition to the field breaker, the board can interface with other auxiliary equipment related to the exciter, such as cooling fans, field flashing circuits, and discharge resistors.
- System Integration: The EXMD card works in conjunction with the main control card (like a DSPX) to form the complete excitation control system. It’s a crucial link that allows the system’s “brain” to command the “muscles” of the exciter’s power section.
- Robust Design: Like all GE industrial control components, it is built to withstand the harsh conditions of a power plant.
Applications
The IS200EXMDG1A is a key component in power generation facilities that have upgraded to the Mark VIe Excitation Control System. It is essential for:
- Generator Control: It is a critical part of the system that controls the generator’s output voltage by regulating the current in the field windings.
- Plant Automation: It is an integral part of the automation system for the generator, helping to manage startup, shutdown, and normal operation by providing a means of controlling and monitoring auxiliary equipment.
- Safety and Protection: It provides a means of controlling the field breaker, which is a key part of the system’s protective logic.
