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5461-774 - Frequency Control Board is available in stock which ships the same day.
5461-774 - Frequency Control Board comes in UNUSED as well as REBUILT condition.
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SPECIFICATIONS:
Part Number: 5461-774
Manufacturer: Woodward
Series: MicroNet / NetCon 5000
Product Type: High-Precision Frequency Control Board
Frequency Input: 50 Hz / 60 Hz (Selectable)
Input Signal: Voltage Transformer (VT) / Potential Transformer (PT)
Resolution: 0.01 Hz
Control Modes: Isochronous and Droop Frequency Control
Operating Temperature: -40 °C to +70 °C
Mounting: Chassis / Rack Mounted
Weight: 1.3 kg
Availability: In Stock
Country of Origin: United States
FUNCTIONAL DESCRIPTION:
The 5461-774 Frequency Control Board is a specialized processing module designed for Woodward MicroNet and NetCon 5000 systems. Its primary function is to monitor and regulate the electrical frequency of a generator set, ensuring it remains at a stable 50 Hz or 60 Hz under varying load conditions. This board acts as the link between the mechanical speed of the turbine and the electrical requirements of the power grid. It processes high-accuracy voltage signals from potential transformers and calculates the exact frequency deviation, providing the necessary feedback to the Master CPU to adjust fuel delivery or steam flow. This module is critical for preventing frequency "drift" that can damage sensitive electrical equipment or cause grid instability.
PRECISION LOAD SHARING AND GRID SYNCHRONIZATION:
Equipped with high-resolution sensing circuitry, the Control Board is essential for parallel operation and grid synchronization. It allows multiple generators to lock onto a common frequency, facilitating seamless load sharing between units. The board features sophisticated phase-matching logic that assists automatic synchronizers in aligning the generator's frequency and phase angle with the bus before the circuit breaker is closed. By maintaining a tight tolerance on frequency down to 0.01 Hz, the Control Board ensures that the transition from islanded operation to grid-parallel operation is bumpless and safe for the entire electrical distribution network.
SYSTEM RELIABILITY AND ELECTRICAL ISOLATION:
Designed for the demanding electrical environments of power plants, the Control Board features robust galvanic isolation on its sensing inputs. This protects the MicroNet backplane and central processor from high-voltage transients and electrical noise originating from the generator's potential transformers. The module also includes onboard diagnostics that continuously verify the integrity of the frequency signal; if the input signal is lost or falls outside of safe limits, the board triggers a system alarm to prevent uncontrolled frequency excursions. Its rugged aluminum chassis ensures efficient heat dissipation, maintaining performance even in high-ambient temperature control rooms.
AVAILABILITY AND SUPPORT:
World of Controls offers the 5461-774 Frequency Control Board in both unused and fully refurbished conditions to support the global power generation industry. Every unit is subjected to rigorous frequency-response testing using precision signal generators to ensure it meets original factory specifications for accuracy and stability. We provide a full warranty on all parts and offer 24/7 technical support for system commissioning, frequency tuning, and troubleshooting. Our global logistics network is optimized for the rapid delivery of these critical electrical control components, helping you maintain a stable and reliable power supply.
What is the Woodward 5461-774?
It is a Frequency Control Board used in MicroNet and NetCon systems. It is responsible for monitoring the electrical frequency (Hz) of a generator and providing the feedback necessary to keep the system at a stable 50 Hz or 60 Hz. It is the primary interface for maintaining electrical stability in power generation applications.
What is the primary use of the Woodward 5461-774?
This module is primarily used in generator control systems where precise frequency regulation is required. It is essential for units operating in parallel with other generators or connected to a utility grid. Its role is to ensure that the electrical output remains consistent, regardless of changes in the mechanical load on the engine or turbine.
How does it assist in grid synchronization?
The Control Board provides the high-resolution frequency data needed by the control system to match the generator's output to the grid's frequency. By calculating the exact difference in Hz and phase, it allows the governor to speed up or slow down the prime mover until the generator is perfectly in sync with the bus, allowing for a safe breaker closure.
What happens if the frequency signal is lost?
The Control Board is equipped with Signal Loss detection logic. If the input from the potential transformer is interrupted, the module will signal the Master CPU to initiate a fail-safe action. Depending on the system's configuration, this may involve holding the current load constant or triggering an emergency shutdown to prevent the generator from operating at an unsafe or damaging frequency.
