Product Overview
Woodward 8237-1246 is an original bulkhead-mounted overspeed protection relay of the Woodward ProTech‑GII series, serving as a high-level safety protection device for industrial turbine units. Specially designed for steam turbines, gas turbines, hydro turbines, generator sets and high-speed rotating power equipment, it adopts a triple independent redundant monitoring architecture with 2-out-of-3 voting logic. It accurately detects equipment overspeed, over-acceleration and speed abnormality, triggering emergency trip interlock to prevent unit runaway and severe equipment accidents.
Compatible with MPU magnetic pickup speed sensor signals, the device integrates high-precision speed monitoring, acceleration judgment, online self-diagnosis and automatic overspeed testing functions, fully complying with SIS safety system specifications for high-risk industries such as power, petrochemical and metallurgy. With an IP56 industrial bulkhead enclosure, it features strong vibration and electromagnetic interference resistance, supporting 24/7 continuous operation. It is an essential original component for maintenance replacement, system upgrading and safety reconstruction of turbine overspeed protection systems.
2. Technical Parameters
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Parameter
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Specification
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Model Number
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8237-1246
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Product Series
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ProTech‑GII Industrial Overspeed Protection System
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Brand & Origin
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Woodward, Original USA Imported
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Mounting Type
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Bulkhead Wall Mount
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Safety Architecture
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3 Independent Channels, 2oo3 Safety Voting Logic
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Applicable Equipment
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Steam turbine, gas turbine, hydro turbine, generator, high-speed rotating units
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Input Signal
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Compatible with standard MPU magnetic pickup speed sensor frequency signal
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Measurement Accuracy
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±0.1% high precision speed sampling
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Response Time
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＜10ms ultra-fast interlock response
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Power Supply
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90–264VAC / 47–63Hz or 100–150VDC wide voltage
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Power Consumption
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≤30W
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Protection Grade
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IP56 dustproof & waterproof
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Operating Temperature
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-10℃ ~ +60℃ industrial wide temperature range
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Vibration Resistance
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10~500Hz vibration adaptability, 0.04G²/Hz vibration tolerance
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Communication Interface
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Ethernet, USB for debugging & data upload
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Core Functions
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Speed monitoring, over-acceleration protection, auto overspeed test, channel self-diagnosis, fault interlock shutdown
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Dimension
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330×486×153mm
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3. Product Features
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Triple Redundant High-level Safety Architecture: Equipped with three fully independent speed acquisition and operation channels and industry-standard 2oo3 voting logic, avoiding false interlock or refusal action caused by single-channel faults, meeting high integrity requirements of power plant SIS safety systems.
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