Directional Impedance Element For Mho Characteristics Zdmrdir (21D); Directional Impedance Quadrilateral, Including Series Compensation Zdsrdir (21D); Additional Distance Protection Directional Function For Ground Faults Zdardir; Mho Impedance Supervision Logic Zsmgapc - ABB REL670 Operator's Manual

1MRK506276-UUS B
9.3.3.10
9.3.3.11
9.3.3.12
9.3.3.13
9.3.3.14
9.3.3.15
Operator's manual
Includes settings for base current, voltage and impedance direction angles.

Directional impedance element for mho characteristics ZDMRDIR (21D)

Main menu/Settings/Setting group N/Impedance protection/Directional
Impedance/ZDM
Includes settings for base current, voltage and impedance direction angles.
Directional impedance quadrilateral, including series compensation
ZDSRDIR (21D)
Main menu/Settings/Setting Group N/Impedance protection/
DirectionalImpedanceSC(RDIR)/ZDS1
Includes the impedance and angle settings.
Additional distance protection directional function for ground faults
ZDARDIR
Main menu/Settings/Setting Group N/Impedance protection/
MhoDirectionEF(RDIR)/ZDA
Includes settings for minimum operate currents, polarizing mode and angles for
directional measurement.

Mho impedance supervision logic ZSMGAPC

Main menu/Settings/Setting Group N/Impedance protection/
MhoSupervisionLogic(GAPC)/ZSM
Parameters for current and voltage change levels are set here.

Automatic switch onto fault logic, voltage and current based ZCVPSOF

Main menu/Settings/Setting group N/Impedance protection/AutomaticSOTF/SFV
Includes a number of settings. These are operation, rated current (IBase), rated voltage
(VBase), phase current threshold as a percentage of IBase and the phase voltage
threshold as a percentage of VBase.

Pole slip protection PSPPPAM (78)

Main menu/Settings/Setting Group N/Impedance protection/PoleSlip(PPAM,78)/
PSP
Section 9
Read and change settings
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