Voltage differential protection VDCPTOV .................................116
Check of undervoltage levels............................................... 116
Check of voltage differential trip and alarm levels................118
Check of trip and trip reset timers........................................ 119
Final adjustment of compensation for VT ratio differences . 120
Completing the test.............................................................. 120
Loss of voltage check LOVPTUV ............................................. 120
Measuring the operate limit of set values.............................120
Completing the test.............................................................. 121
Frequency protection......................................................................121
Underfrequency protection SAPTUF ........................................121
Verifying the settings............................................................ 121
Completing the test.............................................................. 123
Overfrequency protection SAPTOF ..........................................123
Verifying the settings............................................................ 123
Completing the test.............................................................. 124
Rate-of-change frequency protection SAPFRC ........................124
Verifying the settings............................................................ 124
Completing the test.............................................................. 125
Multipurpose protection.................................................................. 125
General current and voltage protection CVGAPC.....................125
Built-in overcurrent feature (non-directional)........................ 125
Overcurrent feature with current restraint.............................126
Overcurrent feature with voltage restraint............................ 126
Overcurrent feature with directionality..................................127
Over/Undervoltage feature................................................... 127
Completing the test.............................................................. 128
Secondary system supervision.......................................................128
Fuse failure supervision FUFSPVC...........................................128
Checking that the binary inputs and outputs operate as
expected ..............................................................................128
Measuring the operate value for the negative sequence
function ................................................................................129
Measuring the operate value for the zero-sequence
function ................................................................................130
Measuring the operate value for the dead line detection
function ................................................................................131
Completing the test.............................................................. 132
Fuse failure supervision VDSPVC.............................................132
Completing the test.............................................................. 133
Table of contents
Busbar protection REB670 2.2 IEC
5
Commissioning manual
