The GE IS200EDEXG1B Exciter De-Excitation Board is an essential component designed for use in GE’s advanced excitation control systems, particularly the Mark VI and EX2100 platforms. This board plays a critical role in controlling the de-excitation process of synchronous generators, which involves the deliberate and controlled reduction of the generator’s field current. Such control is crucial during generator shutdown, emergency trips, or operational transitions, preventing damage due to abrupt changes in excitation.

Built with industrial-grade components, the IS200EDEXG1B is engineered to provide reliable and stable control signals to the excitation system. Its robust construction allows it to operate effectively under the demanding conditions typical of power plants, including thermal, nuclear, and hydroelectric facilities. By integrating seamlessly with GE’s digital excitation controllers, this board ensures safe, efficient, and precise management of generator excitation.

Technical Specifications

Applications

The IS200EDEXG1B board is used extensively across various sectors where precise generator control is vital, including:

• Thermal power plants

• Nuclear power generation facilities

• Hydroelectric power stations

• Industrial plants with synchronous generators

• Automated excitation control and protection systems

• Retrofit projects upgrading GE Mark VI and EX2100 excitation systems

• Emergency shutdown and trip control of generators

Product Advantages

• Accurate De-Excitation Control: Enables smooth, controlled reduction of generator field current, reducing mechanical and electrical stress on equipment.

• Robust Construction: Designed for reliable operation in harsh environments with high electrical noise and temperature variations.

• Seamless Integration: Compatible with GE’s Mark VI and EX2100 control systems, facilitating straightforward installation and operation.

• Modular Design: Supports easy replacement and maintenance, minimizing downtime during service activities.

• Enhanced Safety: Contributes significantly to generator protection during shutdowns and abnormal conditions by managing excitation ramp-down effectively.

• High Signal Integrity: Built-in filtering and isolation circuitry protect against interference and ensure clean control signals.

• Global Compliance: Meets international standards for safety and environmental compliance.

Frequently Asked Questions (FAQ)

1. What is the primary function of the IS200EDEXG1B board?

   It manages the controlled reduction of generator field current during shutdowns or emergency events to protect the generator.

2. Which excitation control systems is this board compatible with?

   It is designed for use with GE Mark VI and EX2100 excitation control platforms.

3. How does the board improve generator safety?

   By providing a gradual and controlled de-excitation, it prevents sudden voltage changes that could damage generator components.

4. What operating conditions can the board handle?

   The board operates within 0°C to 60°C and tolerates 5% to 95% relative humidity without condensation.

5. Is the IS200EDEXG1B board field replaceable?

   Yes, it is designed for modular replacement with standard tools to minimize system downtime.

6. Does this board require calibration after installation?

   Factory calibration is provided, but verification and adjustment during commissioning are recommended.

7. How does the board handle electrical noise and interference?

   It features isolation and filtering circuits that reduce electromagnetic interference and transient voltage effects.

8. Can this board be used in retrofitting older GE excitation systems?

   Yes, it is often used in retrofit projects involving Mark VI or EX2100 platforms, subject to compatibility checks.

9. What routine maintenance is necessary?

   Regular inspection of connections and periodic verification of signal outputs during maintenance schedules are advised.

10. How can proper operation of the de-excitation board be verified?

    Diagnostic procedures include signal measurement at output terminals, functional testing within the excitation system, and visual inspection.