Sel 421 - Page 3

Date Code 20090715 SEL-421 Relay
Table of Contents
List of Tables ......................................................................................................................................................vii
List of Figures................................................................................................................................................... xxi
Preface .............................................................................................................................................................. xxxi
User’s Guide
Section 1: Introduction and Specifications
Features........................................................................................................................................................ U.1.2
Models and Options..................................................................................................................................... U.1.5
SEL-421 Versions and Supported Features ................................................................................................. U.1.7
Applications................................................................................................................................................. U.1.8
Specifications ............................................................................................................................................ U.1.13
Section 2: Installation
Shared Configuration Attributes.................................................................................................................. U.2.1
Plug-In Boards........................................................................................................................................... U.2.12
Jumpers...................................................................................................................................................... U.2.18
Relay Placement ........................................................................................................................................ U.2.30
Connection................................................................................................................................................. U.2.31
AC/DC Connection Diagrams................................................................................................................... U.2.50
Section 3: PC Software
Installing the Computer Software................................................................................................................ U.3.2
Communications Setup................................................................................................................................ U.3.4
Settings Database Management and Drivers............................................................................................... U.3.6
Create and Manage Relay Settings.............................................................................................................. U.3.9
Expression Builder .................................................................................................................................... U.3.14
Analyze Events .......................................................................................................................................... U.3.16
HMI Meter and Control............................................................................................................................. U.3.21
Section 4: Basic Relay Operations
Inspecting a New Relay............................................................................................................................... U.4.1
Connecting and Applying Power................................................................................................................. U.4.3
Establishing Communication....................................................................................................................... U.4.4
Changing the Default Passwords................................................................................................................. U.4.6
Checking Relay Status............................................................................................................................... U.4.10
Making Simple Settings Changes.............................................................................................................. U.4.13
Examining Metering Quantities ................................................................................................................ U.4.33
Reading Oscillograms, Event Reports, and SER....................................................................................... U.4.42
Operating the Relay Inputs and Outputs ................................................................................................... U.4.56
Configuring High-Accuracy Timekeeping ................................................................................................ U.4.71
Readying the Relay for Field Application................................................................................................. U.4.79
Section 5: Front-Panel Operations
Front-Panel Layout ...................................................................................................................................... U.5.2
Front-Panel Menus and Screens ................................................................................................................ U.5.13
Front-Panel Automatic Messages.............................................................................................................. U.5.34
Operation and Target LEDs ....................................................................................................................... U.5.36
Front-Panel Operator Control Pushbuttons ............................................................................................... U.5.40
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