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Illustrates the electrical connections for the ESDR 4T relay.
Details the terminal connections for the 24 Vdc power supply.
Describes terminal connections for current transformer inputs.
Explains terminal connections for discrete digital inputs.
Details terminal connections for the relay outputs.
Details the six current values used for differential protection.
Explains the two-stage monitoring of differential current.
Defines the tripping and warning thresholds relative to restraint current.
Describes restraint for inrush current and overexcitation.
Covers the unit's operational readiness and self-monitoring features.
Introduces parameter entry via front panel buttons.
Details control inputs and relay functionalities.
Describes the front panel LEDs and their functions.
Explains the operation and display modes of the LC-display.
Covers language selection and software version display.
Explains how to protect configuration with a code.
Details how to set relay functions (operating/idle current).
Defines rated current and voltage values for protected objects.
Specifies current transformer primary values and nominal voltages.
Describes settings for transformer vector groups.
Details enabling/disabling differential protection monitoring.
Explains adjustment of tripping and warning thresholds.
Describes settings for inrush and overexcitation restraint.
Outlines initial connection and adjustment steps.
Describes testing using three-phase test equipment.
Details steps for commissioning using primary current.
Covers tests for correct phase sequence and CT connections.
Explains rotating CT connections to test relay behavior.
Describes re-testing after restoring original connections.
Provides a detailed list of transformer vector group definitions.
Describes factory options for servicing Woodward equipment.
Provides instructions for returning equipment to Woodward for repair.
Details materials needed for packing a control for return.
Explains the process for obtaining a Return Authorization Number.
Lists information required when ordering replacement parts.
Provides contact information for Woodward support.
Outlines available after-sales engineering support services.
Lists information needed for technical assistance calls.
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General
