IS200EXAMG1B GE Mark VI Exciter Attenuator Module NEW
Manufacturer: GE Fanuc
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Part Number: IS200EDEXG1BBB
Condition：New with Original Package
Product Type: Exciter Attenuator Module
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The IS200EXAMG1B (functional acronym EXAM) is an authoritative Exciter Attenuator Board manufactured by GE Fanuc for the Mark VI Speedtronic turbine control system. This module is a mechanical necessity for excitation control, specifically designed to attenuate high-voltage signals from the generator field to levels compatible with the low-voltage control electronics of the Mark VI rack. By providing precise signal conditioning and high-impedance isolation, the IS200EXAMG1B ensures that the control system can accurately monitor field voltage and current without exposure to destructive electrical transients. It is a critical component for maintaining stable synchronous operation in power generation plants and heavy industrial facilities.
Detailed Technical Specifications
| Attribute | Details |
| Manufacturer | GE Fanuc / General Electric |
| Model Number | IS200EXAMG1B |
| Part Number | IS200EXAMG1BAA |
| Series | Mark VI Speedtronic |
| Functional Acronym | EXAM |
| Product Type | Exciter Attenuator Module |
| Primary Function | High-voltage signal attenuation and conditioning |
| Inputs Supported | Generator field voltage, exciter output signals |
| Attenuation Ratio | Precision-calibrated for Mark VI control logic |
| Isolation | High-impedance galvanic isolation |
| Operating Temp | -40 °C to +70 °C (Industrial grade) |
| Form Factor | Standard VME board dimensions (266 × 197 mm) |
| Humidity | 5% to 95% non-condensing |
| Weight | 0.8–1.0 kg |
Engineering and Operational Guidelines
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Signal Conditioning Expertise: The IS200EXAMG1B excels at scaling down large generator field variables. This expertise allows the main control processors to receive real-time, high-fidelity data, which is essential for the precise regulation of reactive power and voltage stability.
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Transient Voltage Protection: Acting as a protective buffer, this board utilizes surge suppression and filtering circuits to prevent electrical noise and field spikes from reaching the VME backplane. This design is a trustworthy measure to extend the service life of the entire control system.
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Authoritative Diagnostics: The board features onboard test points and status indicators that allow engineers to verify signal attenuation levels during commissioning. These diagnostics facilitate rapid fault isolation between the field excitation hardware and the control electronics.
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Integration with Mark VI Racks: As a Group 1B assembly, the IS200EXAMG1B is optimized for standard excitation cabinet layouts. It interfaces seamlessly with the VPRO and EMCS boards to provide a complete, redundant protection and control loop.
Technical FAQ
Q: What is the difference between the IS200EXAMG1B and the IS200EXAMG1BAA?
A: The IS200EXAMG1BAA is the specific functional revision of the IS200EXAMG1B. The "AA" suffix indicates the initial hardware and software configuration. It is a professional best practice to verify that the revision level matches your system's configuration to ensure identical attenuation ratios.
Q: Can this board be used with both gas and steam turbine exciters?
A: Yes. The IS200EXAMG1B is designed for universal application within the GE Mark VI excitation framework, provided the field voltage levels fall within the board's rated attenuation range.
Q: Does the board require periodic recalibration?
A: The attenuation resistors are high-precision, low-drift components. While manual calibration is rarely required, it is a trustworthy procedure to verify signal accuracy during major turbine overhauls using the Mark VI Toolbox software.