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Specifies the intended operational uses for the unit and prerequisites for safe operation.
Details precautions to prevent damage from static discharge to electronic components.
Illustrates the electrical connections for the ESDR 4 unit.
Describes the terminal connections for the unit's power supply.
Details the connections for current transformer (CT) inputs.
Explains the connections for digital input signals.
Outlines the terminal connections for the unit's relay outputs.
Provides an overview of the ESDR 4's function as a protection relay.
Explains the two-stage monitoring process for differential current.
Details the adjustable tripping and warning thresholds based on restraint current.
Describes the function of various control input terminals.
Explains the function of the unit's different output relays.
Identifies and describes the LEDs, buttons, and LC display on the front panel.
Details the function and color of each LED indicator on the unit.
Explains the function of each button in automatic and configuration modes.
Describes the messages and values displayed on the unit's liquid crystal display.
Explains how to enter and navigate the configuration mode.
Covers essential settings like language, CT ratio, and generator nominal current.
Details the settings for differential current monitoring levels and timing.
Lists requirements and initial setup steps before operating the unit.
Outlines procedures to verify wiring and initial parameter settings.
Describes a test involving CT secondary rotation to check current relationships.
Provides detailed physical dimensions and mounting information for the ESDR 4 unit.
Lists electrical measurement specs, environmental limits, and digital input details.
Details relay outputs, housing construction, and protection ratings.
Specifies operating times and differential current thresholds.
Lists configurable parameters for basic unit settings.
Lists configurable parameters for differential current protection settings.
Outlines available factory services for Woodward equipment.
Provides instructions and information needed for returning equipment for repair.
Details how to pack equipment and obtain a Return Authorization Number.
Provides contact information and guidance for technical support and engineering services.
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