3
Contents
Copyrights ................................................................................. 7
1. Introduction..............................................................9
1.1. This manual.............................................................. 9
1.2. Use of symbols ......................................................... 9
1.3. Intended audience ..................................................... 9
1.4. Product documentation ............................................. 10
1.5. Document conventions ............................................. 10
1.6. Document revisions...................................................11
2. Safety information................................................... 13
3. Product overview ....................................................15
3.1. Use of the relay....................................................... 15
3.2. Features................................................................. 15
4. Application ............................................................. 17
4.1. Requirements.......................................................... 17
4.2. Configuration .......................................................... 17
5. Technical description .............................................. 21
5.1. Functional description............................................... 21
5.1.1. Product functions ......................................... 21
5.1.1.1. Protection functions ....................... 21
5.1.1.2. Inputs .......................................... 21
5.1.1.3. Outputs........................................ 22
5.1.1.4. Disturbance recorder...................... 22
5.1.1.5. Front panel................................... 22
5.1.1.6. Non-volatile memory ...................... 23
5.1.1.7. Self-supervision............................. 23
5.1.1.8. Time synchronization ..................... 24
5.1.2. Measurements ............................................ 25
5.1.3. Configuration............................................... 25
5.1.4. Protection ................................................... 27
5.1.4.1. Block diagram............................... 27
5.1.4.2. Overcurrent protection.................... 27
5.1.4.3. Ground-fault protection ................... 29
5.1.4.4. Thermal protection for cables .......... 30
5.1.4.5. Phase discontinuity protection ......... 36
5.1.4.6. Circuit-breaker failure protection....... 36
5.1.4.7. Arc protection ............................... 37
5.1.4.8. Auto-reclose function ..................... 38
5.1.4.9. Inverse definite minimum time
characteristics............................... 44
Feeder Protection Relay
Technical Reference Manual - ANS I Version
REF610REF610
1MRS755535
Issued: 30.01.2005
Version: D/22.05.2009