1.INTRODUCTION
2.INSTALLATION
845 TRANSFORMER PROTECTION SYSTEM - INSTRUCTION MANUAL
Table of Contents
Overview .............................................................................................................................................. 1 - 1
Security Overview ............................................................................................................................ 1 - 6
845 Order Codes............................................................................................................................... 1 - 8
Specifications...................................................................................................................................1 - 10
Protection................................................................................................................................................... 1 - 10
Control ......................................................................................................................................................... 1 - 17
Monitoring.................................................................................................................................................. 1 - 17
Recording ................................................................................................................................................... 1 - 19
User-Programmable Elements ........................................................................................................ 1 - 19
Metering...................................................................................................................................................... 1 - 20
Inputs ........................................................................................................................................................... 1 - 22
Outputs........................................................................................................................................................ 1 - 23
Power Supply............................................................................................................................................ 1 - 24
Communications .................................................................................................................................... 1 - 24
Testing & Certification.......................................................................................................................... 1 - 25
Physical ....................................................................................................................................................... 1 - 26
Environmental.......................................................................................................................................... 1 - 26
Cautions and Warnings ..............................................................................................................1 - 26
Safety words and definitions ............................................................................................................ 1 - 26
Must-read Information ................................................................................................................1 - 28
For Further Assistance.................................................................................................................1 - 29
Mechanical Installation ................................................................................................................. 2 - 1
Product Identification..............................................................................................................................2 - 1
Dimensions...................................................................................................................................................2 - 1
Mounting .......................................................................................................................................................2 - 2
Standard Panel Mount.............................................................................................................................2 - 3
Removable Power Supply......................................................................................................................2 - 5
Removable Magnetic Module..............................................................................................................2 - 6
Electrical Installation ...................................................................................................................... 2 - 7
Terminal Identification ......................................................................................................................... 2 - 12
Wire Size......................................................................................................................................................2 - 16
Ground CT Inputs.................................................................................................................................... 2 - 17
Voltage Inputs.......................................................................................................................................... 2 - 17
Restricted Earth Fault Inputs ............................................................................................................ 2 - 18
Control Power........................................................................................................................................... 2 - 19
Contact Inputs ......................................................................................................................................... 2 - 20
Output Relays........................................................................................................................................... 2 - 20
Serial Communications ....................................................................................................................... 2 - 22
IRIG-B ........................................................................................................................................................... 2 - 23
845 Graphical Display Pages..............................................................................................................3 - 2
LED Status Indicators ..............................................................................................................................3 - 6
TOC-I