Date Code 20100129 Instruction Manual SEL-751A Relay
Table of Contents
R.Instruct ion Manual
List of Tables .......................................................................................................................................................... v
List of Figures....................................................................................................................................................... xi
Preface....................................................................................................................................................................iii
Manual Overview ..............................................................................................................................................iii
Conventions....................................................................................................................................................... iv
Safety and General Information ......................................................................................................................... v
Section 1: Introduction and Specifications
Overview ....................................................................................................................................................... 1.11
Features.......................................................................................................................................................... 1.11
Models, Options, and Accessories................................................................................................................. 1.12
Applications................................................................................................................................................... 1.15
Getting Started............................................................................................................................................... 1.16
Specifications ................................................................................................................................................ 1.20
Section 2: Installation
Overview ......................................................................................................................................................... 2.1
Relay Placement .............................................................................................................................................. 2.1
I/O Configuration ............................................................................................................................................ 2.2
Rear-Panel Connections ................................................................................................................................ 2.15
AC/DC Control Connection Diagrams.......................................................................................................... 2.20
Arc-Flash Protection: System Installation..................................................................................................... 2.29
Field Serviceability........................................................................................................................................ 2.35
Section 3: PC Software
Overview ......................................................................................................................................................... 3.1
Setup................................................................................................................................................................ 3.2
Terminal........................................................................................................................................................... 3.4
Settings Database Management and Drivers ................................................................................................... 3.5
Settings ............................................................................................................................................................ 3.6
Event Analysis............................................................................................................................................... 3.11
Meter and Control.......................................................................................................................................... 3.12
Help ............................................................................................................................................................... 3.15
Section 4: Protection and Logic Functions
Overview ......................................................................................................................................................... 4.1
Application Data.............................................................................................................................................. 4.3
Group Settings (SET Command)..................................................................................................................... 4.3
Basic Protection............................................................................................................................................... 4.5
RTD-Based Protection................................................................................................................................... 4.27
Voltage-Based Protection .............................................................................................................................. 4.29
Frequency Protection..................................................................................................................................... 4.47
Rate-of-Change of Frequency Protection...................................................................................................... 4.48
Trip/Close Logic............................................................................................................................................ 4.50
Reclose Supervision Logic ............................................................................................................................ 4.54
Reclose Logic ................................................................................................................................................ 4.59
Demand Metering.......................................................................................................................................... 4.76
Logic Settings (SET L Command) ................................................................................................................ 4.81
Global Settings (SET G Command) .............................................................................................................. 4.92
Synchrophasor Measurement ........................................................................................................................ 4.94
Breaker Failure Setting.................................................................................................................................. 4.94
Arc-Flash Protection...................................................................................................................................... 4.95
Analog Inputs .............................................................................................................................................. 4.100
To Next Page
Loading...
