ABB RET670 Commissioning Manual page 9

Transformer protection RET670 2.2 IEC
Commissioning manual
Requirements.............................................................................. 87
Preparing the IED to verify settings............................................. 89
Activating the test mode................................................................... 90
Preparing the connection to the test equipment............................... 90
Connecting the test equipment to the IED........................................91
Releasing the function to be tested.................................................. 92
Verifying analog primary and secondary measurement................... 93
Testing the protection functionality................................................... 94
Forcing of binary input/output signals for testing.............................. 95
Forcing concept........................................................................... 95
How to enable forcing..................................................................95
Enable forcing by using LHMI................................................ 95
Enable forcing using TESTMODE function block...................96
How to change binary input/output signals using forcing............ 96
Forcing by using LHMI........................................................... 96
Forcing by using PCM600...................................................... 98
How to undo forcing changes and return the IED to normal
operation......................................................................................99
Undo forcing by using TESTMODE component...................100
Undo forcing by using LHMI................................................. 100
Undo forcing by using PCM600............................................100
Section 11 Testing functionality by secondary injection................. 103
Testing disturbance report..............................................................103
Introduction................................................................................103
Disturbance report settings........................................................103
Disturbance recorder (DR)........................................................ 103
Event recorder (ER) and Event list (EL).................................... 104
Identifying the function to test in the technical reference manual ..105
Differential protection......................................................................105
Transformer differential protection T2WPDIF andT3WPDIF..... 105
Verifying the settings............................................................ 105
Completing the test.............................................................. 106
High impedance differential protection HZPDIF ....................... 106
Verifying the settings............................................................ 106
Completing the test.............................................................. 107
Restricted earth fault protection, low impedance REFPDIF ..... 107
Verifying the settings............................................................ 107
Completing the test.............................................................. 108
Additional security logic for differential protection LDRGFC .....108
Verifying the settings............................................................ 108
Completing the test.............................................................. 110
Impedance protection..................................................................... 110
Table of contents
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