Seg HighTECH MRR1 - Default Chapter; Table of Contents

Manual MRR1 SEG Electronics GmbH
DOK-TD-MRR1, Rev. B 3
Contents
1. Introduction and application ....................................................................... 4
2. Features and characteristics ...................................................................... 4
3. Design ........................................................................................................... 5
3.1 Connections ........................................................................................................................ 5
3.1.1 Output relays ................................................................................................................... 5
3.1.2 Blocking input .................................................................................................................. 5
3.1.3 External reset input ......................................................................................................... 5
3.2 Display ................................................................................................................................. 6
3.3 LEDs .................................................................................................................................... 7
4. Working principle ......................................................................................... 8
4.1 Rotor earth fault protection .................................................................................................. 8
4.2 Excitation current supervision ........................................................................................... 10
5. Operation and settings .............................................................................. 12
5.1 Setting and measuring values ........................................................................................... 12
5.2 Setting procedure .............................................................................................................. 13
5.2.1 Pickup value and tripping delay .................................................................................... 13
5.2.2 Setting of slave address ................................................................................................ 13
5.2.3 Reset ............................................................................................................................. 14
5.3 Blocking of protective functions and assignment of the output relays ............................ 15
5.3.1 Blocking of protective functions ..................................................................................... 15
5.3.2 Assignment of the output relays .................................................................................... 16
6. Relay testing and commissioning ............................................................ 17
6.1 Power-On .......................................................................................................................... 17
6.2 Testing the output relays ................................................................................................... 17
6.3 Checking the set values .................................................................................................... 17
6.4 Secondary injection test .................................................................................................... 17
6.4.1 Test equipment .............................................................................................................. 17
6.4.2 Example of a test circuit ................................................................................................ 18
6.4.3 Checking the insulation measuring circuit ..................................................................... 18
6.4.4 Checking the excitation current circuit .......................................................................... 18
6.4.5 Checking the pickup value and reset value .................................................................. 19
6.4.6 Checking the tripping delay ........................................................................................... 19
6.5 Real injection test .............................................................................................................. 19
6.6 Maintenance ...................................................................................................................... 19
7. Technical data ............................................................................................ 20
7.1 Measuring input circuits .................................................................................................... 20
7.2 Common data .................................................................................................................... 20
7.3 System data and test specifications .................................................................................. 20
7.4 Setting ranges and steps .................................................................................................. 21
7.5 Order Form ........................................................................................................................ 22