Product Short Description
Product Overview
DS200TCEAG1BNE is a dedicated Emergency Overspeed Protection Board (TCEA) in GE’s Mark V DS200 series, engineered to provide independent and high-integrity overspeed monitoring and protection for gas and steam turbines. It operates as a safety-critical component that monitors rotor speed via dedicated speed sensors, compares real-time speed against preset thresholds, and triggers immediate protective actions such as fuel cutoff and emergency shutdown when overspeed conditions are detected. It integrates a dedicated microprocessor, PROM modules, and redundant signal paths to ensure fail-safe operation, and interfaces with the Mark V system bus for status reporting while maintaining independent safety logic to prevent common-mode failures. It delivers deterministic response to protect turbines from catastrophic damage due to overspeed events.
Description
Technical Specifications
- Manufacturer: GE (General Electric) Boards & Turbine Control
- Series: Mark V DS200 (Speedtronic)
- Board Type: Emergency Overspeed Protection Board (TCEA)
- Processor: Dedicated microprocessor with multiple PROM modules for firmware and safety logic instructions
- Speed Inputs: 3 redundant speed sensor channels (accepts 120 V AC or 24 V DC pulse signals from magnetic pickup sensors)
- Speed Measurement Range: 0 to 120% of turbine rated speed; resolution 0.1% of rated speed
- Protection Thresholds: Programmable primary (110% rated speed) and secondary (115% rated speed) overspeed setpoints
- Response Time: < 100 ms from overspeed detection to protective output activation
- Output Signals: 2 dry contact outputs (250 V AC, 5 A) for emergency shutdown; 4 – 20 mA status output for system monitoring
- Connectors:
- J1: Speed sensor input signals (3 channels)
- J2: Power supply (24 V DC from TCPS board)
- J3: Dry contact outputs for emergency shutdown
- J4: 4 – 20 mA status output
- J5: System bus interface for status reporting and configuration
- Jumpers: 4 hardware jumpers (J1 – J4) for sensor type and threshold configuration
- Status Indication: 6 front – panel LEDs for sensor health, power, overspeed status, and output activation
- Power Supply: 24 V DC via J2 connector (100 mA typical current draw)
- Operating Temperature: -40 to 85°F (-40 to 29.4°C)
- Isolation: Galvanic isolation between speed inputs, outputs, and system bus (2500 V AC isolation rating)
- PCB Coating: Conformal coating for protection against dust, moisture, and industrial contaminants
- Mounting: Installed in the R5 core of Mark V control system cabinet
Functional Features
- Redundant Speed Monitoring: 3 independent speed sensor channels cross – validate readings to eliminate single – point sensor failures and ensure measurement accuracy.
- Independent Safety Logic: Operates on separate power and processing paths from the main control system to avoid common – mode failures during overspeed events.
- Deterministic Protection Response: Pre – programmed safety logic triggers emergency shutdown within < 100 ms to limit rotor speed escalation.
- Programmable Thresholds: 4 hardware jumpers allow configuration of overspeed setpoints and sensor signal types without firmware modifications.
- Continuous Diagnostics: Monitors sensor signal integrity, power supply health, and internal circuit operation, with LED indicators for fault identification.
- Dual Protective Outputs: Two independent dry contact outputs ensure reliable emergency shutdown even if one output path fails.
- System Integration: Interfaces with Mark V system bus for status reporting and configuration while maintaining independent protection logic.
- Fail – Safe Design: Defaults to protective state (outputs de – energized) in case of power loss or internal component failure.
Functional Advantages
- High Integrity Protection: Redundant hardware and independent safety logic eliminate common – mode failures, meeting IEC 61508 SIL 3 safety requirements.
- Deterministic Response: Sub – 100 ms reaction time prevents rotor damage by stopping overspeed escalation rapidly.
- Flexible Configuration: Hardware jumpers support multiple sensor types and custom threshold settings for different turbine models.
- Simplified Troubleshooting: LED indicators provide real – time status of sensors, power, and outputs, reducing diagnostic time.
- Robust Environmental Performance: Conformal coating and industrial – grade components ensure operation in high – vibration, temperature – variable turbine environments.
- Seamless System Compatibility: Interfaces with Mark V control systems for centralized monitoring while preserving independent safety functionality.
Application Scenarios
DS200TCEAG1BNE is installed in safety – critical turbine applications requiring independent overspeed protection, including:
- Power Generation: Gas and steam turbine control systems in thermal power plants, combined – cycle plants, and cogeneration facilities to protect against overspeed during load rejection or governor failure.
- Oil and Gas Industry: Compressor and turbine packages in upstream extraction, midstream pipeline compression, and downstream refining to prevent equipment damage and ensure process safety.
- Marine Propulsion: Shipboard gas turbine systems to maintain safe speed limits and protect propulsion components during vessel operation.
- Industrial Turbines: Small – scale industrial turbines for mechanical drive or power generation in chemical, paper, and metal processing plants.
- Turbine Retrofits: Upgrades for legacy turbine control systems to meet modern safety standards and enhance overspeed protection capabilities.
Reviews
There are no reviews yet.