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Woodward 8440-1706 SPM-D11/LSXR Synchronizer

The Woodward 8440-1706 is a dedicated synchronization panel designed for power plants, marine vessels, and standby generator networks utilizing one- or three-phase AC alternators.Classified under the SPM-D11 series with the /LSXR performance profile, this compact unit contains the complex algorithms required to achieve seamless, disturbance-free breaker closures.

Rather than generating simple close pulses, the 8440-1706 continuously tracks the phase angle differential and slip frequency of the generator relative to the busbar. It sends precise analog or discrete bias commands directly to the engine's speed governor and Automatic Voltage Regulator (AVR).Once parallel connection is completed, the unit switches modes to handle active real power distribution and soft generator unloading sequences, protecting the prime mover from electrical counter-torque stress.

• Dynamic Slip Frequency Locking: Allows operators to select between dead-on phase matching or controlled slip frequency tracking, ensuring optimal breaker execution under erratic load profiles.

• True RMS Computational Metering: Utilizes advanced wave sampling to accurately calculate true RMS power, diminishing the risk of false tracking loops caused by harmonic distortions from adjacent VFD drives.

• Automated Dead-Bus Close Safe System: Detects complete loss of main bus utility voltage, immediately bypassing phase matching logic to close the generator onto the dead grid for fast power restoration.

• Built-in Soft Unload Ramping: Manages smooth base-load scaling and power factor adjustments, letting the generator reduce current output gradually before opening the primary contact breaker.

• Compact Flush Mount Enclosure: Housed in a standardized 144x72mm form factor, dropping straight into traditional cutout panels with rear screw terminals for immediate deployment.

• Emergency Standby Infrastructures: Ensures instant, automated synchronization for hospitals, massive data centers, and industrial processing mills.

• Distributed Generation (DG) Peak-Shaving: Parallels isolated standby engine generator groups with local utility grids when peak electrical demands strike.

• Marine Power Distribution Systems: Mounts inside vessel switchgear panels to regulate auxiliary generator load sharing across localized sea buses.

Q1: Can the 8440-1706 direct-drive an engine governor without external bias converters?

A: Yes, the module is equipped with embedded configurable analog and discrete relay output bias signals, allowing it to directly trim Woodward speed controls and compatible standard voltage regulators.

Q2: What is the recommended upgrade path if the legacy 8440-1706 unit is discontinued?

A: Under Woodward’s standard hardware lifecycles, the legacy 8440-1706 (SPM-D1115B/LSXR) model updates directly to the next-generation 8440-2165 (SPM-D2-1115B/LSXR) hardware interface platform.

Q3: Why are the CT secondary ratings specified exactly as ../5A?

A: The internal current-sensing transformers on the 8440-1706 board are calibrated exclusively for a 5 Amp current loop max. If your field Current Transformers utilize a 1 Amp secondary output rating, an intermediate matching transformer must be deployed to ensure correct power monitoring.

Do you provide global shipping services?

Yes. We have local distribution centers on all continents, which can quickly transport parts to any corner of the world.

2. What payment methods and currencies do you accept?

To make your purchasing process as simple as possible, we offer multiple payment methods including bank transfer, check, and PayPal. Meanwhile, we also accept most mainstream credit and debit cards, such as Visa, Mastercard, and American Express. We can accept payments in most major currencies worldwide, but we recommend using US dollars (USD), British pounds (GBP), or euros (EUR) as a priority. Payments in other currencies may incur additional fees. All transactions are securely processed by HSBC Bank and HSBC Merchant Services.

How many parts do you currently have in stock?

We have a vast inventory of thousands of new, refurbished, and outdated automation components, including products from well-known manufacturers such as ABB and Schneider. If you cannot find the required parts, please do not worry. We work closely with a global network of professional suppliers to provide you with tailored quotes even if the part is not listed on our website.

Who can I contact if I encounter any problems?

Our experienced customer service team will handle any issues after you place your order.