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Supervision
Commissioning: Current Transformer Failure Supervision
Precondition:
1. Measurement of all three phase currents (are applied to the
measuring inputs of the device).
2. The earth current is detected via a cable-type transformer (not in
Holmgreen connection).
Object to be tested
Check of the CT supervision (
by comparing the calculated with the measured earth current)
.
Necessary means
Three-phase current source
Procedure, part 1
Set the limiting value of the CTS to
»delta I=0.1*In«.
Feed a three-phase, symmetrical current system (approx. nominal current) to the secondary side.
Disconnect the current of one phase from one of the measuring inputs (the symmetrical feeding at
secondary side has to be maintained).
Make sure that the signal
»CTS.A
LARM
« is generated now.
Successful test result, part 1
The signal
»CTS.A
LARM
«
is generated.
Procedure, part 2
Feed a three-phase, symmetrical current system (approx. nominal current) to the secondary side.
Feed a current that is higher than the threshold value for the measuring circuit supervision to the earth
current measuring input.
Ascertain that the signal
»CTS.A
LARM
«
is generated now.
Successful test result, part 2
The signal »CTS.A
LARM
« is generated.
1079
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...