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Woodward 5466-354
Special triple redundant overspeed protection module for large steam turbine and gas turbine units, which is the core safety protection unit of turbine control system. It independently collects turbine rotating speed signal in real time, set multi-stage overspeed threshold, execute emergency shutdown interlock protection when speed exceeds limit. Adopt triple redundant voting architecture, any single channel fault will not affect the normal protection function, meet the high safety and high reliability requirements of power station main equipment, with fault self-test, signal monitoring and event record functions.
Detailed content
Technical Specifications
Working Power: Dual redundant 24VDC power supply input
Speed Signal Input: Three-channel independent magnetic speed signal input
Overspeed Threshold: Multi-stage threshold programmable fixed value setting
Protection Output: Relay hard contact emergency shutdown output
Vibration Resistance: Meet power station unit strong vibration mechanical standard
Working Temperature: -40℃ to +85℃
Safety Level: Meet industrial functional safety SIL2 certification standard
Functional Characteristics
Triple redundant signal acquisition and voting logic, eliminate single point failure risk
Independent three-channel speed monitoring, mutual comparison and fault self-inspection
Multi-stage overspeed protection threshold setting, support early warning and emergency shutdown two-level protection
Hard-wired relay output, direct drive emergency trip valve and interlock loop
Built-in event fault record, permanently store overspeed time and fault parameters
Full metal sealed shell, anti-electromagnetic interference, adapt to power station high-temperature operation environment
Support local key setting and remote upper computer parameter configuration
Application Scenarios
Large thermal power plant steam turbine unit, combined cycle power plant gas turbine equipment, nuclear power plant auxiliary turbine protection, petrochemical large steam turbine drive unit, metallurgy industry waste heat turbine safety control system.
