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Help CenterWOODWARD 8525-797 Overspeed Protection System
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WOODWARD 8525-797 Overspeed Protection System
Core Functions Introduction
The primary task of this equipment is to monitor the speed of the prime mover (such as a steam turbine, gas turbine, or engine) and immediately trigger a shutdown upon detecting dangerous overspeed.
Triple Redundancy Architecture (2-out-of-3): Internally, it contains three independent monitoring modules. Tripping is only triggered when at least two modules simultaneously detect overspeed. This design significantly reduces the probability of false tripping due to a single point of failure.
Rapid Response: Response time is typically between 10ms and 20ms, enabling instantaneous cutoff of fuel or steam supply to prevent equipment disintegration due to excessive centrifugal force.
Real-time Speed Monitoring: Speed frequency is read via a magnetoelectric speed sensor (MPU) or proximity switch and converted into a digital signal.
Self-Diagnosis and Online Testing: Allows functional testing of individual modules during machine operation without affecting overall machine operation, ensuring the system is always ready.
Event Logging: Built-in non-volatile memory records the speed, timestamp, and specific module status at the moment of tripping, facilitating accident tracing.
Email: xmxblynn@163.com
Phone: +86 18059884797
Model 8525-797 is primarily used in heavy-duty rotating machinery with extremely high safety requirements: For equipment protection purposes, it is used in industrial steam turbines to prevent sudden speed increases due to load drops, thus avoiding rotor blade damage. In gas turbines, it ensures immediate shut-off of the fuel system under abnormal speeds, preventing mechanical failure. In feedwater pumps/compressors, it monitors the operating speed of large drive pumps, ensuring fluid dynamic safety in the production line. In high-power diesel engines, it protects the engine from structural damage caused by overspeeding.
Common Specifications (Reference)
Power Input: Typically supports redundant high and low voltage DC or AC inputs.
Input Signals: 3 independent speed sensor inputs.
Output Control: Relay output for tripping circuits, 4-20mA for remote speed transmission.
Compliance: Meets SIL 3 (Safety Integrity Level) standards.
Email: xmxblynn@163.com
Phone: +86 18059884797
Other related product models recommended:
woodward 3500XT 8440-2085
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WOODWARD 8440-2052
WoodWard 9907-018
WoodWard 9907-014
WOODWARD 8440-2177
WOODWARD 5466-425
WOODWARD 5484-803
WOODWARD 5466-315
WOODWARD 1680-631
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