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1MRK 504 165-UEN Rev. K
10.7
Testing the protection functionality...................................................................................... 84
10.8
Forcing of binary input/output signals for testing.................................................................84
10.8.1
Forcing concept.................................................................................................................84
10.8.2
How to enable forcing........................................................................................................85
10.8.2.1
10.8.2.2
10.8.3
How to change binary input/output signals using forcing.................................................. 85
10.8.3.1
10.8.3.2
10.8.4
How to undo forcing changes and return the IED to normal operation............................. 88
10.8.4.1
10.8.4.2
10.8.4.3
Section 11
Testing functionality by secondary injection............................................91
11.1
Testing disturbance report................................................................................................... 91
11.1.1
Introduction........................................................................................................................91
11.1.2
Disturbance report settings............................................................................................... 91
11.1.3
Disturbance recorder (DR)................................................................................................ 91
11.1.4
Event recorder (ER) and Event list (EL)............................................................................ 92
11.2
Identifying the function to test in the technical reference manual .......................................92
11.3
Differential protection.......................................................................................................... 92
11.3.1
Transformer differential protection T2WPDIF and T3WPDIF............................................ 92
11.3.1.1
11.3.1.2
11.3.2
High impedance differential protection HZPDIF ............................................................... 93
11.3.2.1
11.3.2.2
11.3.3
Restricted earth fault protection, low impedance REFPDIF ............................................. 94
11.3.3.1
11.3.3.2
11.3.3.3
11.3.4
Additional security logic for differential protection LDRGFC ............................................ 95
11.3.4.1
11.3.4.2
11.3.5
11.3.5.1
11.3.5.2
11.3.5.3
11.3.5.4
11.3.5.5
11.3.5.6
11.3.5.7
11.3.5.8
11.3.5.9
11.4
Impedance protection........................................................................................................102
Transformer protection RET670
Commissioning manual
Enable forcing by using LHMI...................................................................................... 85
Enable forcing using TESTMODE function block.........................................................85
Forcing by using LHMI................................................................................................. 85
Forcing by using PCM600............................................................................................87
Undo forcing by using TESTMODE component...........................................................89
Undo forcing by using LHMI.........................................................................................89
Undo forcing by using PCM600................................................................................... 89
Verifying the settings.................................................................................................... 92
Completing the test...................................................................................................... 93
Verifying the settings.................................................................................................... 93
Completing the test...................................................................................................... 94
Function revision history.............................................................................................. 94
Verifying the settings.................................................................................................... 94
Completing the test...................................................................................................... 95
Verifying the settings.................................................................................................... 95
Completing the test...................................................................................................... 96
Preparing the function for testing................................................................................. 96
Verifying the zero-sequence current reduction from the winding one side...................97
Verifying the three-phase pickup from winding one side..............................................98
Verifying the single-phase pickup from winding one side.............................................98
Verifying the zero-sequence current reduction from winding two side......................... 99
Verifying the three-phase pickup from winding two side.............................................. 99
Verifying the single-phase pickup from winding two side........................................... 100
Verifying the operate characteristic............................................................................ 101
Completing the test.................................................................................................... 102
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