ABB RELION REX640 Technical Manual page 865

1MRS759142 C
REX640
Technical Manual
Zone Z4
Zone Z3
Zone Z2
Zone Z1
Zone Z5
GUID-6328DB81-8832-48DE-816C-E1899762F281 V2 EN
Figure 462: Zones of DSTPDIS function (example 1)
Zone Z2
Zone Z1
Zone Z5
GUID-4BCCC542-04DB-4FC3-A4E6-D3CC4009CE32 V2 EN
Figure 463: Zones of DSTPDIS function (example 2)
The supported zone characteristic shapes are quadrilateral, mho (circular) or bullet
(quadrilateral and mho characteristics combined). Mho can be combined with
directional lines to secure directionality and to enable increased fault resistance
coverage with an offset mho circle.
X
ZL
X
Zone Z4
Zone Z3
ZL
Section 4
Protection functions
Under impedance
start charactristics
Load encroachment
area
R
Under impedance
start
characteristics
Load encroachment
area
R
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