ABB REG670 - Operation Principle

Name Values (Range) Unit Step Default Description
ZRevPE 0.005 - 3000.000 Ohm/p 0.001 30.000 Reverse reach of the phase to earth
loop(magnitude)
tPE 0.000 - 60.000 s 0.001 0.000 Delay time for operation of phase to earth
elements
IMinOpPE 10 - 30 %IB 1 20 Minimum operation phase to earth current
OpModePP Off
On
- - On Operation mode Off / On of Phase-Phase
loops
ZPP 0.005 - 3000.000 Ohm/p 0.001 30.000 Impedance setting reach for phase to
phase elements
ZAngPP 10 - 90 Deg 1 85 Angle for positive sequence line
impedance for Phase-Phase elements
ZRevPP 0.005 - 3000.000 Ohm/p 0.001 30.000 Reverse reach of the phase to phase
loop(magnitude)
tPP 0.000 - 60.000 s 0.001 0.000 Delay time for operation of phase to phase
IMinOpPP 10 - 30 %IB 1 20 Minimum operation phase to phase
current
Table 72: ZMHPDIS Group settings (advanced)
Name Values (Range) Unit Step Default Description
OffsetMhoDir Non-directional
Forward
Reverse
-
- Non-directional Direction mode for offset mho
OpModetPE Off
On
- - On Operation mode Off / On of Zone timer,
Ph-E
OpModetPP Off
On
- - On Operation mode Off / On of Zone timer,
Ph-ph
Table 73: ZMHPDIS Non group settings (basic)
Name
Values (Range) Unit Step Default Description
GlobalBaseSel 1 - 12 - 1 1 Selection of one of the Global Base Value
groups
7.1.6 Operation principle
7.1.6.1 Full scheme measurement
The execution of the different fault loops within the IED are of full scheme type, which
means that each fault loop for phase-to-earth faults and phase-to-phase faults are
executed in parallel for all zones.
The use of full scheme technique gives faster operation time compared to switched
schemes which mostly uses a start element to select correct voltages and current
depending on fault type. So each distance protection zone performs like one
independent distance protection function with six measuring elements.
Section 7 1MRK502052-UEN B
Impedance protection
180
Technical manual