13.4.7.1 Verifying the settings
GUID-202C5606-5F12-4C00-A12F-02A33EB571D9 v1
GUID-69610335-7C97-4134-8A47-05501AB5C620 v3
Distance protection zones
While measuring operating characteristics, keep the current constant. Keep the current
as close as possible to its rated value or lower, however make sure it is higher than
30% of the rated current.
If the measurement of the operating characteristics runs under constant voltage
conditions, ensure that the maximum continuous current in an IED does not exceed
four times its rated value.
To verify the zone 1 mho characteristic, at least two points must be tested.
P1
P3
P4
X
R
LineAngle
Z1Fwd
Z1Rev
P2
IEC11000312-2-en.vsd
IEC11000312 V2 EN-US
Figure 51: Proposed four test points for phase-to-phase fault
Where,
Z1Fwd
is the forward positive sequence impedance setting for zone 1
Z1Rev
is the reverse positive sequence impedance setting for zone 1
LineAngle
is the Impedance angle for phase-to-phase fault in degrees
Section 13 1MRK 502 073-UUS A
Testing functionality by secondary injection
182 Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
Commissioning manual
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