Description
1. Product Title
GE IS200SPROH1AAB – Overspeed Protection Module (MRP663860)
2. Product Overview
The GE IS200SPROH1AAB (part number MRP663860) is a specialized overspeed protection module for GE Mark VI and Mark VIe turbine control systems. It monitors turbine speed sensors in real-time, executing rapid shutdown logic and safety interlocks to prevent catastrophic overspeed events. This module addresses critical safety risks in high-speed rotating equipment by providing microsecond-level detection and reliable trip signal generation, ensuring compliance with industrial safety standards. Integrated within protection cabinets, the GE IS200SPROH1AAB enhances system reliability through noise-immune signal processing and redundant architectures.
3. Technical Specifications
- Brand: GE (General Electric)
- Model: IS200SPROH1AAB (MRP663860)
- Warranty: One Year
- Condition: 100% New & Original
- Inputs: High-speed speed sensor acquisition (MPPU/MPPU2 compatible)
- Outputs: Protection trip relays and shutdown signals
- Power Supply: Low-voltage DC from control rack backplane
- Operating Temp: -20°C to +65°C
- Mounting: Slot-based in Mark VI/VIe backplane
- Protection: Conformal coating, EMI filtering

4. Key Features & Benefits
- Rapid Overspeed Detection: Microsecond response time processes speed signals, triggering immediate protective shutdowns to safeguard turbine integrity.
- Signal Integrity: Noise-filtered paths and high-sensitivity circuits maintain accuracy amid vibration and electrical interference in power plants.
- Redundancy Support: Compatible with multi-channel architectures, enabling fault-tolerant operation without single points of failure.
5. Application Scenarios
- Gas Turbine Protection: Monitors shaft speed for emergency trips in heavy-duty generators, preventing mechanical damage during acceleration faults.
- Steam Turbine Systems: Interfaces with speed sensors for primary overspeed protection in utility-scale power plants.
- Industrial Turbo-Machinery: Deploys in compressor drives for safety interlocks and sequential shutdown control.
6. Frequently Asked Questions (FAQ)
- Q: What is the primary function of the GE IS200SPROH1AAB?
A: It provides overspeed detection, shutdown logic, and safety interlocks for Mark VI/VIe turbine systems using high-speed sensor inputs. - Q: Is GE IS200SPROH1AAB compatible with legacy systems?
A: Yes, it mounts directly on Mark VI/VIe backplanes and supports integration with existing speed detection architectures.




