Displays available instances of HZPDIF (87X) with settings for operation, the alarm
voltage level [V] on the CT secondary side, the time delay to activate the alarm, the
operating voltage level [V] on the secondary side of the CT and the value of the series
resistor in [Ω].
9.3.3
Impedance protection
9.3.3.1 Overview
Under Impedance protection there are settings for Distance zones, Phase selection,
directional impedance, Power swing detection, and Automatic switch onto fault
protection. Each instance of a function can be switched on or off with the operation
parameter and the remaining parameter settings like rated current and voltage are data
required for the function to operate.
9.3.3.2 Full-scheme distance protection, mho characteristic ZMHPDIS (21)
Main menu/Settings/Setting group N/Impedance Protection/MhoDistance(PDIS,
21)/ZMH
Displays available adjustable parameters. These include the impedance and timer settings.
9.3.3.3 Distance protection zones, quadrilateral characteristics ZMQPDIS,
ZMQAPDIS (21)
Main menu/Settings/Setting group N/Impedance protection/DistanceZones(PDIS,
21)/ZM
Main menu/Settings/Setting group N/Impedance protection/DistanceZones(PDIS,
21)/ZM
Displays available adjustable parameters. These include the [Ω] per phase for resistive
and reactive reach as well as the [Ω] per loop for phase to phase, and phase to ground
fault resistance. Zones can also be set on or off.
9.3.3.4 Distance protection zones, quadrilateral characteristics for series
compensated lines ZMCPDIS, ZMCAPDIS (21)
Main menu/Settings/Setting group N/Impedance protection/DistanceZones(PDIS,
21)/ZMC1
Main menu/Settings/Setting group N/Impedance protection/DistanceZones(PDIS,
21)/ZMCx
1MRK506276-UUS B Section 9
Read and change settings
53
Operator's manual
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