Product Overview

The Woodward 5441-693 functions as a high-precision digital synchronizer and safeguard for generator-to-bus or generator-to-grid paralleling operations. This module continuously analyzes the electrical relationship between two live systems, verifying that voltage, frequency, and phase angle remain within strictly defined safety windows. By preventing out-of-phase breaker closure, the 5441-693 eliminates the risk of catastrophic mechanical failure and electrical transients. We supply this unit as 100% Brand New and Original, providing critical protection for utility-scale turbines and standby power systems.

Technical Specifications

The 5441-693 integrates high-speed digital sampling with deterministic relay output logic.

Engineering Advantages

The Woodward 5441-693 optimizes the safety and efficiency of paralleling switchgear through several core engineering features:

• Standardized Safety Compliance: The module strictly adheres to IEEE C37.106 standards. This ensures that the breaker closure command occurs only during ideal synchronization conditions, protecting generator windings and shafts from the extreme torque generated by improper phase matching.

• High-Speed Deterministic Logic: With a response time of less than 50 ms, the 5441-693 issues the "Sync Permit" signal instantly when parameters align. This rapid execution prevents the system from drifting out of the phase window during the mechanical delay of the circuit breaker closure.

• Robust Noise Immunity: Woodward designs the 5441-693 to meet IEC 61000-6-2/4 industrial EMC standards. The module maintains signal integrity even when mounted in cabinets adjacent to high-frequency variable speed drives (VSDs) or large power transformers.

• Seamless Telemetry Integration: The onboard RS-485 Modbus RTU port transmits real-time slip frequency, phase angle, and voltage data to the plant DCS or SCADA system. This enables operators to monitor the synchronization process remotely and diagnose governor or AVR (Automatic Voltage Regulator) tuning issues without additional instrumentation.

FAQs

Is the Woodward 5441-693 compatible with legacy analog systems?

Yes. The 5441-693 serves as a primary choice for retrofitting legacy turbine governors. Its DIN-rail mounting and 24 VDC power requirement allow it to replace older, bulky analog sync-check relays while providing superior digital accuracy and telemetry.

What happens if the generator frequency drifts during the synchronization window?

The module continuously monitors the Slip Frequency. If the generator accelerates or decelerates beyond your configured setpoint (e.g., ±0.5 Hz), the 5441-693 immediately denies the "Sync Permit" signal, blocking the breaker from closing until the governor stabilizes the speed.

Does this module require a specific Potential Transformer (PT) ratio?

The 5441-693 accepts a standard PT secondary input of 100–150 VAC. As long as your PTs scale the primary bus and generator voltages into this range, the module will accurately calculate the voltage matching window (typically configurable between ±5% to ±10%).

Is this unit shipped in original Woodward packaging?

We supply the 5441-693 as 100% Brand New and Original. Every unit ships in its factory-sealed packaging, ensuring it meets all original manufacturer specifications and performance standards for mission-critical synchronization.