Rockwell Automation 865 Differential Protection Relay User Manual
Page 8
vi
Table of Contents
865-UM001A-EN-P – July 2009
Chapter 10
Technical Data
Connections .......................................................................... 10-1
Measuring Circuitry ....................................................... 10-1
Auxiliary Voltage ........................................................... 10-1
Digital Inputs .................................................................. 10-2
Trip Contacts .................................................................. 10-2
Alarm Contacts ............................................................... 10-2
Local Serial Communication Port .................................. 10-3
Remote Control Connection ........................................... 10-3
Arc Protection Interface (Option) .................................. 10-3
Tests and Environmental Conditions .................................... 10-4
Disturbance
Tests
...........................................................
10-4
Test Voltages .................................................................. 10-4
Mechanical Tests ............................................................ 10-4
Environmental Conditions .............................................. 10-4
Casing
.............................................................................
10-5
Package
..........................................................................
10-5
Protection Stages .................................................................. 10-5
Differential Protection .................................................... 10-5
Differential Overcurrent Stage ΔI> (87) .................. 10-5
Differential Overcurrent Stage ΔI>> (87) ............... 10-5
Non-Directional Current Protection ............................... 10-6
Overcurrent Stage I>, I’> (50/51) ............................ 10-6
Overcurrent Stage I>> and I’>> (50/51) .................. 10-6
Thermal Overload Stage T> (49) ............................. 10-7
Unbalance
Stage
I
2
>, I’
2
> (46) ................................. 10-7
Earth Fault Stage I
0
> (50N/51N) ............................. 10-8
Earth Fault Stage I
0
>>, I
0
>>>, I
0
>>>> (50N/51N) .. 10-8
Circuit-breaker Failure Protection .................................. 10-9
Arc Fault Protection Stages (Option) ............................. 10-9
Arc Protection Stage Arcl> (50AR), Option ........... 10-9
Arc Protection Stage Arcl
0
> (50AR), Option .......... 10-9
Arc Protection Stage Arcl
02
> (50AR), Option ....... 10-10
Supporting Functions ................................................... 10-10
Disturbance
Recorder
(DR)
...................................
10-10
Chapter 11
List of Abbreviations and Symbols .......................................11-1
Chapter 12
Installation
Mounting Instructions ...........................................................12-1
Abbreviations and
Symbols