Overview

The Woodward 9905-795 DSLC is a microprocessor‑based controller designed for three-phase AC generator systems, combining synchronizer and load control functions into a single unit. It provides automatic synchronizing, bumpless load transfer, isochronous load sharing, and reactive power management.

The DSLC also supports dead bus closing and process import/export control, making it ideal for complex multi-generator installations. It integrates seamlessly with other Woodward controllers, enabling flexible expansion and reliable communication with SCADA/DCS systems.

Technical Data

Key Features

• Synchronizer + Load Control in one unit → reduces hardware complexity

• Automatic generator loading/unloading → ensures smooth (bumpless) load transfer

• Isochronous load sharing → balances load across multiple DSLC-equipped sets

• Dead bus closing → allows safe connection to a de-energized bus

• VAR or Power Factor control → maintains reactive power balance

• Process import/export control → manages power flow between utility and generator systems

• Accurate synchronizing → frequency, phase, and voltage matching

Typical Applications

Power Generation Plants

• Multi-generator synchronization and load sharing

Industrial Facilities

• Backup and parallel generator systems

Marine Propulsion

• Shipboard generator synchronization and reactive power control

Utility Systems

• Distributed generation with import/export power management

Oil & Gas Operations

• Turbine-driven generators requiring precise synchronization and load control

FAQ

Q1: What makes the 9905-795 unique compared to older synchronizers?
A1: It integrates synchronizer and load control functions into one unit, reducing complexity and improving reliability.

Q2: Can it handle multiple generator sets?
A2: Yes. It supports isochronous load sharing among DSLC-equipped sets.

Q3: Does it support reactive power management?
A3: Yes. It can operate in either VAR control or power factor control mode.

Q4: What is “dead bus closing”?
A4: It allows safe connection of a generator to a bus that is not energized, preventing unsafe conditions.

Q5: Is it suitable for utility tie applications?
A5: Yes. It includes process import/export control for managing utility interconnections.