Woodward 8440-1878 DSLC-2 Digital Synchronizer Module
Manufacturer: Woodward
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Part Number: 8440-1878
Condition：New with Original Package
Product Type: Digital Synchronizers
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Country of Origin: GERMANY
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Woodward 8440-1878 DSLC-2 Digital Synchronizer and Load Control Module
The Woodward 8440-1878, also cataloged as the 8440-1878 Digital Synchronizer and Load Control Module, operates as a dedicated hardware component for three-phase generator synchronization, load sensing, and automatic breaker closure within multi-unit power generation networks. Powered by a 12/24 VDC nominal supply rail, this microprocessor-based controller evaluates 5 A CT inputs, phase alignment, and system voltage differentials. It outputs precise bias commands to engine governors and automatic voltage regulators across dual Ethernet, RS-485, and RS-232 communication interfaces.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 8440-1878 |
| Brand | Woodward |
| Origin | USA |
| Weight | 2.0 kg |
| Dimensions | 250 x 227 x 84 mm (9.84 x 9.00 x 3.30 in) |
| Operating Temp | -40 deg C to +70 deg C |
| Power Consumption / Input Voltage | 12/24 VDC nominal |
| Product Type | Digital Synchronizer and Load Control Module |
| Compatible Series | DSLC-2 Series |
| Current Inputs | 5 A nominal CT inputs |
| Synchronization Modes | Phase-match, slip-frequency, voltage matching |
| Paralleling Capacity | Up to 32 generators |
| Communication Ports | 2x Ethernet, 1x RS-485, 1x RS-232 |
| Certifications | UL, cUL, GOST-R, CSA |
Actuator Loop Feedback Response
The Woodward 8440-1878 executes real-time actuator loop feedback response algorithms to dynamically adjust generator speed and excitation outputs during parallel synchronization routines. By measuring slip frequency and phase angle error across 5 A current transformer (CT) secondary loops and voltage sensing channels, the internal controller continuously updates bias signals to eliminate cross-currents upon breaker closure. This high-speed closed-loop feedback prevents mechanical shaft stress and stabilizes active/reactive power allocation across configurations supporting up to 32 generators in parallel.
Frequently Asked Questions
Q: How does the Woodward 8440-1878 manage phase matching prior to breaker closure?
A: The microprocessor continuously calculates phase angle differential and slip frequency relative to the bus reference. It adjusts governor bias outputs to align generator frequency and phase angle within configured tolerance windows before issuing a breaker close command.
Q: What cable shield grounding steps prevent noise on the 5 A CT input signals?
A: System installers must wire CT secondary circuits using twisted, shielded pairs and establish a single chassis earth ground connection at the control cabinet terminal strip to eliminate electromagnetic interference on analog current channels.
Q: Does the dual Ethernet interface support redundant network topologies?
A: The dual Ethernet ports facilitate high-speed inter-module communication for load-sharing calculations across multiple DSLC-2 units while providing dedicated network connections to plant PLC and SCADA platforms.
Field Installation Guidelines
Mount the unit vertically on a flat panel inside an IP-rated enclosure using the designated mounting holes to ensure physical stability. Maintain clear air paths around the chassis to facilitate natural convection cooling across the unit. Route low-voltage DC power supply lines separate from AC potential transformer (PT) and current transformer (CT) wiring to mitigate inductive cross-talk. Ground all communication and signal cable shielding to a dedicated chassis earth stud before applying 12/24 VDC control power.