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1MRK 505 378-UEN Rev. K
11.13.14.1
Function revision history
Document
revision
A
B
C
D
E
F
G
H
J
11.13.14.2
Single ended fault locator
Table 47:
Parameter
I
Healthy conditions
Impedance |Z|
Impedance angle ZF
Measuring the fault distance
1.
Set the test point (|Z| fault impedance and ZF impedance phase angle) for a condition that
meets the requirements in Table 47.
2.
Subject the IED to healthy normal load conditions for at least two seconds.
3.
Apply a fault condition.
4.
Check the fault distance under disturbance records or function status.
Check that the distance-to-fault value displayed on the HMI complies with Equations 111,
and 113.
p
EQUATION123 V1 EN-US
in % for two-phase and three-phase faults
Line differential protection RED670
Commissioning manual
Product
History
revision
2.2.1
-
2.2.1
-
2.2.2
-
2.2.3
-
2.2.3
-
2.2.4
-
2.2.4
-
2.2.4
-
2.2.5
Two ended based fault locator included. This update is valid for 2.2.5 release only.
Test settings
Condition
Higher than 30% I
U = 63,5 V, I = 0 A & ZF = 0°
Test point
Note:
•
•
•
Test angle
•
•
Z
x
×
------ - 100
=
X1
© 2017 - 2022 Hitachi Energy. All rights reserved
r
£ (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-
Z
x
sequence current
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
GUID-807EF353-8E34-48F1-96F3-5A43F2D52DD3 v1
GUID-88FF03E2-BB5C-4662-840D-C9A02F7A3D0F v1
GUID-8A5CE857-8844-4288-B19A-9AE1217DC9D4 v2
(Equation 111)
112
247
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