
Protective Elements
Commissioning: df/dt - ROCOF
Object to be tested
All frequency protection stages that are projected as df/dt.
Necessary means
Three-phase voltage source and
Frequency generator that can generate and measure a linear, defined rate of change of frequency.
Procedure
Testing the threshold values
Keep on increasing the rate of change of frequency until the respective element is activated.
Note the value.
Testing the trip delay
Set the test voltage to nominal frequency.
Now apply a step change (sudden change) that is 1.5 times the setting value (example: apply 3 Hz per
second if the setting value is 2 Hz per second) and
Measure the tripping time at the relay output. Compare the measured tripping time to the configured tripping
time.
Successful test result:
Permissible deviations/tolerances and dropout ratios can be taken from the Technical Data.
868
MCDLV4
DOK-HB-MCDLV4-2E
Содержание HighPROtec MCDLV4
Страница 1: ...Manual Line Differential Protection MCDLV4 Software Version 3 4 a DOK HB MCDLV4 2E Revision A English...
Страница 3: ...Order Code Order Code 3 MCDLV4 DOK HB MCDLV4 2E...
Страница 47: ...Installation and Connection 47 MCDLV4 DOK HB MCDLV4 2E...
Страница 164: ...Input Output and LED Settings 164 MCDLV4 DOK HB MCDLV4 2E...
Страница 433: ...Parameters 433 MCDLV4 DOK HB MCDLV4 2E...
Страница 457: ...Device Parameters 457 MCDLV4 DOK HB MCDLV4 2E...
Страница 473: ...Blockings 473 MCDLV4 DOK HB MCDLV4 2E...
Страница 822: ...Protective Elements Name Description Profibus Scada Cmd 16 Scada Command 822 MCDLV4 DOK HB MCDLV4 2E...
Страница 988: ...Protective Elements 988 MCDLV4 DOK HB MCDLV4 2E P P Q P Q P Q Q Q P S S...
Страница 989: ...Protective Elements 989 MCDLV4 DOK HB MCDLV4 2E Pr Q P Q P Qr...
Страница 1023: ...Protective Elements 1023 MCDLV4 DOK HB MCDLV4 2E...
Страница 1070: ...Supervision 1070 MCDLV4 DOK HB MCDLV4 2E...