Woodward
Manual MRI3-ITER GB
4
DOK-TD-MRI3 ITERE Rev.A
5.4.23
Setting of Baud-rate (applies for Modbus Protocol only) .......................................... 32
5.4.24
Setting of parity (applies for Modbus Protocol only) ................................................. 32
5.5
Fault recorder ................................................................................................................... 33
5.5.1
Adjustment of the fault recorder ................................................................................... 33
5.5.2
Number of the fault recordings ..................................................................................... 33
5.5.3
Adjustment of trigger occurrences ................................................................................ 33
5.5.4
Pre-trigger time (T
pre
) .................................................................................................... 33
5.6
Adjustment of the clock ..................................................................................................... 33
5.7
Additional functions ........................................................................................................... 34
5.7.1
Blocking of the protective functions .............................................................................. 34
5.8
Indication of measuring and fault values .......................................................................... 37
5.8.1
Indication of measuring values ..................................................................................... 37
5.8.2
Unit of the measuring values displayed ........................................................................ 37
5.8.3
Indication of fault data ................................................................................................... 38
5.8.4
Fault memory ................................................................................................................ 38
5.9
Reset ................................................................................................................................. 39
5.9.1
Erasure of fault storage ................................................................................................ 39
5.9.2
Reset of the thermal replica register ............................................................................. 39
6.
Relay testing and commissioning ............................................................ 40
6.1
Power-On .......................................................................................................................... 40
6.2
Testing the output relays and LEDs ................................................................................. 40
6.3
Checking the set values .................................................................................................... 40
6.4
Secondary injection test .................................................................................................... 40
6.4.1
Test equipment ............................................................................................................. 40
6.4.2
Example of test circuit for MRI3-ITE ............................................................................. 41
6.4.3
Checking the input circuits and measured values ........................................................ 41
6.4.4
Example of a test circuit with earth fault directional feature ......................................... 42
6.4.5
Checking the operating and resetting values of the relay ............................................ 43
6.4.6
Checking the relay operating time ................................................................................ 43
6.4.7
Checking the high set element of the relay .................................................................. 43
6.4.8
Checking the external blocking and reset functions ..................................................... 43
6.4.9
Testing the external blocking with Block/Trip function .................................................. 44
6.4.10
Test of the CB failure protection ............................................................................... 44
6.5
Primary injection test ........................................................................................................ 44
6.6
Maintenance ..................................................................................................................... 45
7.
Technical data ............................................................................................ 46
7.1
Measuring circuits ............................................................................................................. 46
7.2
Common data ................................................................................................................... 46
7.3
Setting ranges and steps .................................................................................................. 47
7.3.1
Systemparameter ......................................................................................................... 47
7.3.2
Overload protection ...................................................................................................... 48
7.3.3
Over current time protection ......................................................................................... 49
7.3.4
Earth fault protection ..................................................................................................... 50
7.3.5
Earth fault protection (ER-Type) ................................................................................... 50
7.3.6
Determination of earth fault direction (MRl3-ITER) ...................................................... 51
7.3.7
BlockTrip – time** ......................................................................................................... 51
7.3.8
Switch failure protection ................................................................................................ 51
7.3.9
Interface parameter ...................................................................................................... 51
7.3.10
Parameter for the fault recorder................................................................................ 51
7.4
Tripping characteristics ..................................................................................................... 52
7.4.1
Thermal characteristic .................................................................................................. 52
7.4.2
Preload factor ............................................................................................................... 53
7.4.3
Inverse time over current protection relay .................................................................... 54
7.5
Tripping characteristics ..................................................................................................... 55
7.6
Output relays .................................................................................................................... 58
8.
Order form .................................................................................................. 59
