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Woodward 8915-652
Product Name: Woodward 8915-652 Steam Turbine Digital Governor / Microprocessor Synchronizer
Product Description: The 8915-652 is a microprocessor-based digital controller and synchronizer designed for steam turbine speed and load control. It is configured for turbine generator set applications including speed governing, load sharing, and automatic synchronization. The unit provides frequency, phase, and voltage matching for three-phase AC generators equipped with Woodward or compatible speed controls and automatic voltage regulators.
Detailed content
Technical Specifications:
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Power Input: 24 Vdc (per synchronizer configuration); alternative configuration documented at 220 V, 50 Hz
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Communication Ports: Independent RS-232 and RS-422 serial ports; built-in redundant Ethernet communication port
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Output: Low-current PWM output
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Rating: Class 1, Div safety rating
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Processor Speed: 50 MHz
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Memory: 53 MB program capacity, 53 MB data capacity
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Operating Temperature: 0 °C to 60 °C
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Humidity: 60% non-condensing
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Physical: Modular construction, control room mounting, weight approximately 6.5 kg
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Operator Interface: Two-line text display, 24 characters per line, menu-driven software
Functional Features:
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Ischronous or droop speed control
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Multiple dynamics compensation
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Manifold Air Pressure (MAP) limiter
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Torque limiter
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Low-speed sensing function
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Remote speed and load reference
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Soft load transfer
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Automatic idle-to-rated switching
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Load rejection / load pulse options
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Idle droop function
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Optional Modbus serial communication
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Adaptive speed sensing algorithm
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Dual serial ports
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Data logging capability
Application Scenarios: Industrial steam turbines, gas turbines, diesel engines, compressor drives, turboexpanders, turbine generator sets in oil & gas, petrochemical, power generation, and marine applications.
Structural Characteristics: The device consists of a series of printed circuit boards housed in an enclosure designed for safe integration into control panel systems.
Working Principle: The microprocessor executes control algorithms based on inputs such as speed, load, and temperature to regulate turbine operation. It drives single or dual-stage actuators to position steam inlet valves, thereby controlling the rotational speed of the turbine-compressor train.
Installation Requirements: Mount in control room panel; connect RS-232, RS-422, and Ethernet communications per system design; wire DC power supply with proper grounding; follow Woodward wiring and electrostatic discharge precautions.
Usage Precautions: Do not operate outside specified mechanical, electrical, or environmental limits. Observe all plant safety instructions. Follow the latest revision of the applicable Woodward manual for installation, operation, and servicing procedures.
