Description
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Product Description
Model 8237-1369 is an over speed detection device that can be configured to work with various turbines. It is part of the ProTech-GII series from Woodward and fits any size of hydro, steam, or gas turbine. In the event of over acceleration, this product will safely shut down the system. Speed readouts for this device are between 4 and 20 mA, and it uses Modbus communication relays. In addition to acceleration detection, model 8237-1369 also uses MPU detection. This product performs routine tests to make sure each module is functioning properly. A conformal coating material makes this speed safety device resistant to sulfur contamination, as well as H2S and SO2 gases.
The product uses a triple modular design, with A, B, and C modules. This makes it possible to replace one aspect of the model while it is powered on and running. The panel mount device uses 2 out of 3 voted architecture. Model 8237-1369 uses both high voltage and low voltage power input. This product has been discontinued by Woodward but is still supplied through AX Control. It can be configured to work on any size turbine to safely shut it down if it over accelerates.(https://www.weikunfadacai1.com/)
FEATURES & FUNCTIONALITY
Acceleration Detection
Optionally the ProTech-GII can be configured to protect a turbine from high acceleration events also. The derivative of the speed signal is used to detect turbine acceleration and issue an associated trip command.
MPU Detection
Each module’s speed sensor input uses special MPU open-wire detection circuitry to validate that the MPU is properly connected before turbine operation, and special loss-of-speed detection logic to validate MPU functionality during turbine operation.
Automatic Overspeed Test Routine
Optionally the ProTech-GII can be configured to routinely perform an overspeed test of each module, then log and report the test results. With this test routine, each module goes through its test sequence using an internal frequency generator to simulate an overspeed condition.
Sulfur Contamination Resistant
The ProTech-GII utilizes a special conformal coating material that has demonstrated excellent long-term protection against H2S and SO2 gases at levels classified in international standard IEC 721-3-3 1994 – environment Class 3C2.
On-line Repair
The ProTech-GII’s triple-modular design allows users to easily replace one of its modules (A, B, C) while the turbine is on-line and operating normally. Ease of replacement is enhanced by the unit’s backplane plug-and-operate structure, and its module-to-module learning function.
Reviews For 8237-1369
Due to Woodward’s model 8237-1369 market availability, finding a direct replacement unit will be hard. AX Control generally tries to keep a surplus of parts for this series in stock however, we can only recommend an upgrade or repair service for this model.
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