ABB RET670 - Additional Distance Protection Directional Function for Earth Faults ZDARDIR; Mho Impedance Supervision Logic ZSMGAPC; Pole Slip Protection PSPPPAM; Power Swing Detection ZMRPSB

9.3.3.14 Additional distance protection directional function for earth faults
ZDARDIR
Main menu/Settings/Setting Group N/Impedance protection/
MhoDirectionEF(RDIR)/ZDARDIR:x
Includes settings for minimum operate currents, polarizing mode and angles for
directional measurement.
9.3.3.15 Mho impedance supervision logic ZSMGAPC
Main menu/Settings/Setting Group N/Impedance protection/
MhoSupervisionLogic(GAPC)/ZSMGAPC:x
Parameters for current and voltage change levels are set here.
9.3.3.16 Pole slip protection PSPPPAM
Main menu/Settings/Setting Group N/Impedance protection/PoleSlip(PPAM,
78)/PSPPPAM:x
Measurement mode, impedance settings and other pole slip protection parameters
are found here.
9.3.3.17 Power swing detection ZMRPSB
Main menu/Settings/Setting Group N/Impedance protection/
PowerSwingDetection(RPSB,78))/ZMRPSB:x
Includes settings for operation, reactive and resistive boundaries, various timers,
base settings for current levels and several others.
9.3.3.18 Power swing logic ZMRPSL
Main menu/Settings/Setting Group N/Impedance protection/
PowerSwingLogic(RPSL)/ZMRPSL:x
Timers are set here.
9.3.4 Current protection
9.3.4.1 Overview
Under Current protection there are settings for Instantaneous phase overcurrent,
Phase overcurrent four step, Instantaneous residual overcurrent, Residual
overcurrent four step, Thermal overload with one time constant, Thermal overload
with two time constants, Pole discordance and Breaker failure. There are several
instances of each function with parameter settings for rated data, operation and
Section 9 1MRK504114-UEN E
Read and change settings
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Operator's manual