Hitachi Relion 670 Series Commissioning Manual page 253

1MRK506371-UUS Rev. M
The result is displayed on the local HMI or via PCM600. Distances to faults for the last 100 recorded
disturbances can be found on the local HMI under Main menu/Disturbance Records /Disturbance
#n(n = 1–100)/General Information
If PCM600 is used, the result is displayed on the recording list after upload, including loop selection
information.
Table 46:
Parameter
I
Healthy conditions
Impedance |Z|
Impedance angle ZF
11.13.10.3 Measuring the operate limit
1. Set the test point (|Z| fault impedance and ZF impedance phase angle ) for a condition that meets
the requirements in
2. Subject the IED to healthy normal load conditions for more than the prefault recording time in
DRPRDRE function.
3. Apply a fault condition.
Check that the distance-to-fault value displayed on the HMI complies with
107
p
EQUATION123 V1 EN-US
in % for two- and three-pole faults
p
EQUATION124 V1 EN-US
in % for single-phase-to-ground faults
p
EQUATION125 V1 EN-US
Line distance protection REL670
Commissioning manual
Test settings
Condition
V = 69.3 V, I = 0 A & ZF = 0°
Test point
Note:
•
•
•
Test angle
•
•
Table 46.
and Equation 108
Z
x
×
------ - 100
=
X1
×
3 Z
= ×
x 100
+ ×
X0 2 X1
×
3 Z
x
-------------------------------------------- - 100 ×
=
× ±
X0 2 X1 XM +
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£ (X0 + 2 · X1)/3 For single-phase faults
Z
x
£ X1 For three and two phase faults
Z
x
£ (X0 + 2 · X1 XM)/3 For single-phase fault with mutual zero-sequence current
Z
x
ZF arctan[(X0 + 2 · X1) / (R0 + 2R1)] For single-phase faults
ZF arctan(X1/R1) For two-phase faults
Section 11
Testing functionality by secondary injection
Equation 106, Equation
(Equation 106)
(Equation 107)
(Equation 108)
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