Description
Technical Specifications
- Product Model: IS200EXAMG1BCB
- Brand: General Electric (GE)
- Warranty: One Year
- Input Voltage: 24 VDC (22–28 VDC) control supply; High voltage field winding sensing input
- Operating Temperature: -20 °C to +60 °C
- Storage Temperature: -40 °C to +85 °C
- Response Time: ≤ 3 ms
- Protection Class: IP20 (rack cabinet installation)
- Accuracy Class: ±0.4% full scale signal conversion
- Output Frequency: N/A
- Rated Current Range: Module consumption ≤ 110 mA
- Communication Interface: Internal rack edge connectors, hardwired signal terminals
- Supported Protocols: Mark VI backplane proprietary signal interface
- Overload Capacity: 2.5kV RMS isolation withstand; transient overvoltage protection via onboard MOV components
- Dimensions: 260 mm × 110 mm × 34 mm
Product Overview
The IS200EXAMG1BCB is an Exciter Attenuation PCB designed exclusively for GE Mark VI Speedtronic turbine control and EX2100 generator excitation systems. It pairs with the Exciter Ground Detector Module (EGDM) to perform high-voltage signal attenuation and galvanic signal conditioning for generator field winding ground fault monitoring. The board reduces high-amplitude exciter feedback voltages to safe low-level measurement signals compatible with control circuit electronics, preventing damage to downstream sensitive monitoring hardware. Configurable onboard jumpers allow tuning signal attenuation ratios to match various generator exciter architectures. Power plant controls and electrical maintenance teams rely on this circuit board to deliver continuous field insulation diagnostics. Timely detection of field winding ground faults avoids catastrophic generator rotor damage and prevents forced outages of turbine-generator assets.
Application Scenarios
- Combined-Cycle Power Plant Generator Excitation Systems: Installed within EX2100 excitation cabinets to monitor rotor field insulation status. High voltage isolation protects Mark VI control hardware from large transient voltages occurring during generator field switching operations.
- Utility Steam Turbine-Generator Units: Supports continuous field ground fault detection for large synchronous generators. Processed fault signals feed directly into turbine protection logic to initiate controlled shutdown when insulation degradation is identified.
- Petrochemical Cogeneration Gas Turbine Packages: Operates with on-site generator excitation equipment for islanded and grid-parallel power production. Robust noise suppression delivers stable measurement data in electrically noisy turbine hall environments.
- Industrial Waste Heat Recovery Turbo-Generators: Fits compact excitation control enclosures for distributed generation facilities. Onboard surge components improve long-term reliability for assets operating with limited routine maintenance access.
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