Schweitzer Engineering SEL-387-0 - Default Chapter; Table of Contents

Date Code 20170601 Instruction Manual SEL-387-0, -5, -6 Relay
Table of Contents
List of Tables ........................................................................................................................................................ v
List of Figures ....................................................................................................................................................vii
Preface................................................................................................................................................................... xi
Manual Overview ............................................................................................................................................. xi
Safety Information ...........................................................................................................................................xii
General Information ....................................................................................................................................... xiv
Section 1: Introduction and Specifications
Overview ......................................................................................................................................................... 1.1
Relay Functions............................................................................................................................................... 1.2
Application Ideas............................................................................................................................................. 1.4
Model Options................................................................................................................................................. 1.7
Specifications .................................................................................................................................................. 1.8
Section 2: Installation
Overview ......................................................................................................................................................... 2.1
Relay Mounting............................................................................................................................................... 2.1
Rear-Panel Connections .................................................................................................................................. 2.5
Typical AC/DC Connections ......................................................................................................................... 2.12
Circuit Board Configuration.......................................................................................................................... 2.13
Section 3: Differential, Restricted Earth Fault, Thermal, and Overcurrent Elements
Overview ......................................................................................................................................................... 3.1
Differential Element ........................................................................................................................................ 3.1
Restricted Earth Fault Element...................................................................................................................... 3.25
Temperature Measurement (SEL-387-5 and SEL-387-6 Relays) ................................................................. 3.31
Thermal Element (SEL-387-6 Relay) ........................................................................................................... 3.32
Overcurrent Element ..................................................................................................................................... 3.48
Time-Overcurrent Curves.............................................................................................................................. 3.66
Section 4: Control Logic
Overview ......................................................................................................................................................... 4.1
Optoisolated Inputs.......................................................................................................................................... 4.2
Local Control Switches (All But SEL-387-0 Relay)....................................................................................... 4.2
Remote Control Switches ................................................................................................................................ 4.3
Multiple Setting Groups .................................................................................................................................. 4.4
SEL
OGIC Control Equation Sets (1—3) Variables ..........................................................................................4.8
Output Contacts............................................................................................................................................. 4.11
Rotating Default Display............................................................................................................................... 4.13
LED Targeting Logic..................................................................................................................................... 4.13
Trip and Close Logic ..................................................................................................................................... 4.16
SEL
OGIC Control Equations.......................................................................................................................... 4.20
Relay Word Bits............................................................................................................................................. 4.23
Section 5: Metering and Monitoring
Overview ......................................................................................................................................................... 5.1
Metering Functions.......................................................................................................................................... 5.1
Temperature Measurement (SEL-387-5 and SEL-387-6 Relays) ................................................................... 5.7
Station DC Battery Monitor ............................................................................................................................ 5.7
Breaker Monitor .............................................................................................................................................. 5.9
Thermal Monitor (SEL-387-6 Relay)............................................................................................................ 5.13