ABB Relion 670 Series Commissioning Manual page 92

Section 10
Testing functionality by secondary injection
1. Change the magnitude and angle of phase-to-earth voltage in phase L1 to achieve impedances
at test points P1, P2, ..., P8. At the same time, inject voltage magnitude of 0.0 V and current of
0.0 A in phase L2.
2. For each test point, observe that the output signals STELEMST and STNDZL1 are activated.
3. Repeat the above test by injecting phase-to-earth voltage in phase L2 in accordance with test
points and steps described above and observe that the output signals STELEMST and
STNDZL2 are activated.
Circular characteristic
Set Operation to On always to check for performance of distance protection during testing.
Select type of earthing system by setting parameter SystemEarthing and set to either Compensated
or High impedance. Also, Select CharStartZ< to Circular and set OpLoadEnch to On. Set
Z1CircleStart, LineAng and ArgLd to default values. Also, set RLd such that its value is lower than
Z1CircleStart, that is, encroached into operating region.
Phase-to-phase fault
Test points that are to be considered for measurement accuracy of set impedance reach are shown
in Figure 20
IEC15000433 V3 EN-US
Figure 20:
86
and Table 22.
jX
P8
P6
P5
P4
Proposed test points for phase-to-phase fault in compensated and high impedance
earthed systems
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( )  ( )  ) 
P1
Z1CircleStart
LineAng
ArgLd
P3
RLd
1MRK 506 377-UEN Rev. K
GUID-DD2271AE-CEE6-4EBC-98F1-08FB7EB122C3 v1
GUID-EA176A86-C14B-480D-955A-213D60AC676B v1
P2
R ( )  R ( )  )  ( ) 
P7
IEC15000433-3-en.vsd
Railway application RER670
Commissioning manual