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.................................................. 10
2. Safety information...................................................11
3. Product overview .................................................... 13
3.1. Use of the relay....................................................... 13
3.2. Features................................................................. 13
4. Application ............................................................. 15
4.1. Requirements.......................................................... 15
4.2. Configuration .......................................................... 15
5. Technical description .............................................. 19
5.1. Functional description............................................... 19
5.1.1. Product functions ......................................... 19
5.1.1.1. Protection functions ....................... 19
5.1.1.2. Inputs .......................................... 19
5.1.1.3. Outputs........................................ 20
5.1.1.4. Disturbance recorder...................... 20
5.1.1.5. Front panel................................... 20
5.1.1.6. Non-volatile memory ...................... 21
5.1.1.7. Self-supervision............................. 21
5.1.1.8. Time synchronization ..................... 22
5.1.2. Measurements ............................................ 23
5.1.3. Configuration............................................... 23
5.1.4. Protection ................................................... 25
5.1.4.1. Block diagram............................... 25
5.1.4.2. Overcurrent protection.................... 25
5.1.4.3. Earth-fault protection ...................... 27
5.1.4.4. Thermal protection for cables .......... 28
5.1.4.5. Phase discontinuity protection ......... 33
5.1.4.6. Circuit-breaker failure protection....... 33
5.1.4.7. Arc protection ............................... 34
5.1.4.8. Auto-reclose function ..................... 35
5.1.4.9. Inverse definite minimum time
characteristics............................... 41
Feeder Protection Relay
Technical Reference Manual
REF 610REF 610
1MRS755310
Issued: 05.10.2004
Version: F/31.12.2007