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Eaton Cutler-Hammer Digitrip 3000 User Manual

Eaton Cutler-Hammer Digitrip 3000
92 pages
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I.B. 17555C
Effective November 1999 Supersedes I.B. 17555A dated March 1999
Instructions for Installation, Operation and Maintenance
of the Cutler-Hammer Digitrip 3000 and Digitrip 3030
Protective Relay

Table of Contents

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Eaton Cutler-Hammer Digitrip 3000 Specifications

General IconGeneral
Long Time DelayAdjustable
Short Time DelayAdjustable
Frequency50/60 Hz
Standards ComplianceUL, CSA, IEC
Voltage600V AC
Voltage RatingUp to 600 VAC
Poles3
CommunicationOptional

Summary

SECTION 1: INTRODUCTION

1-1 PRELIMINARY COMMENTS AND SAFETY PRECAUTIONS

Discusses essential safety guidelines, warnings, and precautions for safe operation.

1-2 GENERAL INFORMATION

Provides an overview of the Digitrip 3000 Protective Relay's capabilities and basic operation.

1-3 FUNCTIONS/FEATURES/OPTIONS

Details the primary functions, features, and available options of the Digitrip 3000 relay.

1-4 STANDARDS

Lists the safety and performance standards the Digitrip 3000 Protective Relays comply with.

SECTION 2: FUNCTIONAL DESCRIPTION

2-1 PROTECTION, TESTING AND COMMUNICATION CAPABILITIES

Covers the relay's core protection functions, testing features, and communication protocols.

2-1.1 RMS SENSING

Explains the relay's true RMS sensing for accurate current measurement and correlation.

2-1.2 PICKUP SETTING

Describes how to set pickup values for various tripping functions like inverse time and short delay.

2-1.3 TIME SETTING

Details the time delay settings for initiating trip actions based on current levels.

2-1.4 PROTECTION CURVE SETTINGS

Explains the selection of various inverse time overcurrent curve shapes for coordination.

2-2 PROTECTIVE RELAY HARDWARE

Describes the physical components of the protective relay, including front and rear panels.

2-2.1 FRONT OPERATIONS PANEL

Details the pushbuttons, LEDs, and display windows on the relay's front panel for operation.

2-2.2 REAR ACCESS PANEL

Discusses the rear panel features, including terminal blocks and DIP switches for configuration.

2-3 DT3000 AND DT3030 SPECIFICATIONS AND TEST SUMMARY

Provides detailed specifications, compliance, and test summary for the DT3000 and DT3030 models.

SECTION 3: OPERATION

3-1 INTRODUCTION

Introduces the section on operating the Digitrip 3000 Protective Relay and its functional use.

3-2 POWER-UP AND SELF TESTING

Explains the sequence of events when power is applied, including self-testing and LED indications.

3-3 PANEL OPERATIONS

Guides the user through operating the relay via its front panel controls and displays.

3-3.1 CHARACTERISTIC CURVE

Discusses the relay's ability to provide selective coordination through curve shaping.

3-3.2 PROGRAM MODE

Details how to enter and use the program mode to set relay parameters.

3-3.3 PROGRAMMING OVERVIEW

Provides flow charts illustrating the sequence for programming the relay settings.

3-3.4 TEST MODE

Explains how to perform periodic tests to verify the relay's functional performance.

3-4 COMMUNICATIONS FUNCTION

Describes how the relay communicates data and receives commands via the INCOM network.

3-4.1 ADDRESS AND BAUD RATE SETTINGS

Guides on setting the relay's address and baud rate for network communication.

SECTION 4: APPLICATION CONSIDERATIONS

4-1 ZONE INTERLOCKING CAPABILITIES

Explains the zone selective interlocking feature for fast fault clearing and coordination.

SECTION 5: INSTALLATION, STARTUP AND TESTING

5-1 INTRODUCTION

Outlines the scope of the section covering mounting, wiring, startup, and testing.

5-2 PANEL PREPARATION

Details the steps for preparing the panel and cutting the required openings for mounting.

5-2.1 CUTOUT

Provides dimensions and tolerances for preparing the panel cutout for the relay.

5-2.2 MOUNTING

Describes the procedure for securely mounting the relay onto the prepared panel.

5-3 REPLACING DIGITRIP MV WITH DIGITRIP 3000

Provides guidance on configuring a Digitrip 3000 as a replacement for a Digitrip MV.

5-4 WIRING

Explains the wiring requirements and connections for the Digitrip 3000 Protective Relay.

5-5 INITIAL STARTUP

Covers the initial steps and checks before and during the first application of power.

5-5.1 BEFORE POWER APPLICATION

Outlines pre-power application checks, including wiring verification and DIP switch settings.

5-5.2 INITIAL POWER APPLICATION

Describes the procedure for applying control power and verifying initial relay operation.

5-6 MISCELLANEOUS TESTING

Covers additional tests and precautions, including dielectric testing.

SECTION 6: MAINTENANCE AND STORAGE

6-1 GENERAL

States that the relay is self-contained and maintenance-free, intended for factory-trained personnel.

6-1.1 STORAGE

Provides guidelines for storing the Digitrip 3000 Protective Relay under specified environmental conditions.

6-2 TROUBLESHOOTING GUIDE (TABLE 6.1)

Offers a guide to diagnose and resolve common symptoms and probable causes.

6-3 REPLACEMENT

Details the procedural steps required to replace the Digitrip 3000 Protective Relay.

SECTION 7: TIME-CURRENT CURVES

7-1 DIGITRIP 3000 INVERSE TIME OVERCURRENT CURVES

Contains specific time-current curves applicable to the Digitrip 3000 Protective Relay.

7-2 DIGITRIP 3000 CURVE EQUATIONS

Provides the mathematical equations used to define the thermal and ANSI/IEC time-current curves.

Appendix A

1.0 INTRODUCTION

Introduces Appendix A, which describes the Drawout Case option for the Digitrip 3000.

2.0 GENERAL DESCRIPTION

Describes the DT3001 Drawout Relay and its connector specifications.

3.0 INSTALLATION

Details the installation requirements for the Drawout Case, including panel preparation.

3.1 PANEL PREPARATION

Specifies the panel cutout dimensions and requirements for mounting the Drawout Case.

3.2 DIGITRIP 3001 DRAWOUT RELAY PARTS LIST

Lists the components included with the DT3001 Drawout Relay for installation.

3.3 MOUNTING THE DRAWOUT OUTER CASE

Provides instructions for mounting the outer case of the DT3001 Drawout Relay onto the panel.

4.0 WIRING AND SETUP

Covers wiring and setup procedures specific to the DT3001 Drawout Relay.

5.0 APPLICATION CONSIDERATIONS

Discusses application considerations, particularly zone selective interlocking for the DT3001.

6.0 DRAWOUT OPERATION

Explains how to operate the drawout mechanism for inserting and removing the relay.

6.1 INSERTING THE RELAY

Provides instructions for correctly inserting the DT3001 relay into its drawout case.

6.2 REMOVING THE RELAY

Details the procedure for safely removing the DT3001 relay inner chassis from its drawout case.

Appendix B

1.0 INTRODUCTION

Introduces Appendix B, which describes the Dual-Source Power Supply (DSPS) addition to the Digitrip 3000.

2.0 GENERAL DESCRIPTION

Describes the DT3010/DT3020 DSPS versions and their benefits over standard relays.

3.0 FUNCTIONAL DESCRIPTION

Explains how the DSPS functions, including AC power and current powering capabilities.

4.0 INSTALLATION

Covers the installation steps for the Digitrip 3000 with Dual-Source Power Supply.

4.1 PANEL PREPARATION

Details panel preparation, including cutout dimensions for the DSPS unit.

4.2 MOUNTING THE DIGITRIP 3000 WITH DUAL-SOURCE POWER SUPPLY

Provides instructions for mounting the Digitrip 3000 with DSPS onto the panel.

5.0 WIRING AND SETUP

Outlines wiring and setup procedures for the Digitrip 3000 with DSPS.

6.0 APPLICATION CONSIDERATIONS

Discusses application considerations for the DSPS, including CT ratios and tripping.

6.1 SENSITIVITY AND CT RATIOS

Addresses CT ratio selection and sensitivity requirements for DSPS operation.

6.2 TRIPPING ON FACILITY ENERGIZATION

Explains how the DSPS handles tripping during facility energization or loss of AC power.

6.3 CT SATURATION

Discusses how the DSPS design helps mitigate issues related to CT saturation.

6.4 BURDEN DATA

Presents burden data in ohms and volt-amperes for the DSPS under various conditions.

7.0 TESTING THE DUAL-SOURCE POWER SUPPLY

Provides procedures for testing the proper operation of the Dual-Source Power Supply.

7.1 IN-SERVICE TEST

Details steps for testing the DSPS functionality while the unit is in service.

7.2 LAB BENCH TEST

Outlines procedures for performing laboratory bench tests on the DSPS.

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