Woodward 9902-400 Load Sharing Module

Product Brief Introduction The Woodward 9902-400 load sharing module is an expansion board for multiple generator parallel operation under the 9902 control platform. It communicates with other parallel units through the load sharing bus, calculates load imbalance and sends trim signals to governors to realize even active load distribution.
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Technical Specifications 24VDC power supply, dedicated load sharing bus interface. Operating temperature: -40℃ ~ +70℃, compatible with Woodward parallel bus protocol.

Functional Features Load data exchange, average load calculation, load deviation trimming, load imbalance alarm, parallel bus fault diagnosis.

Application Scenarios Multiple generator parallel power supply systems, marine generator sets, standby generator parallel cabinets.

Performance Parameters Fast load adjustment response, small steady-state load deviation, stable parallel operation.

Structural Characteristics Rack pluggable bus module, load bus communication and fault indicator lights.

Working Principle All paralleled controllers exchange real-time load data over the load sharing bus. This module compares local unit load with average load and outputs trimming signal to adjust fuel command for load balancing.

Installation Requirements Adopt shielded twisted pair for load bus, follow daisy chain wiring and install terminal resistors at both ends.

Usage Notes All parallel units must use the same type of load sharing module, keep bus wiring intact.




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