Completing The Test; Impedance Protection; 21)Distance Protection Zones, Quadrilateral Characteristic Zmqpdis; Function Revision History - Hitachi Relion 670 Series Commissioning Manual

1MRK506371-UUS Rev. M
5. Connect a trip output contact to a timer.
6. Decrease the injected current stepwise to 50 % of the trip level and check the time delay.
7. Repeat steps 3 – 6 for phases B and C.
11.3.2.2

Completing the test

Continue to test another function or end the test by changing the test mode setting to disabled. Restore
connections and settings to their original values, if they were changed for testing purposes.
11.4

Impedance protection

11.4.1 (21)Distance protection zones, quadrilateral characteristic
ZMQPDIS
Prepare the IED for verification of settings outlined in Section
11.4.1.1

Function revision history

Document
revision
A
B
C
D
E
F
G
H
J
L
M
11.4.1.2

Verifying the settings

Measure operating characteristics during constant current conditions. Keep the measured current as
close as possible to its rated value or lower. But make sure it is higher than the set minimum operating
current.
Ensure that the maximum continuous current to the IED does not exceed four times its rated value, if the
measurement of the operating characteristics runs under constant voltage conditions.
The test procedure has to take into consideration that the shaped load encroachment characteristic is
active. It is therefore necessary to check the setting. To verify the settings with the shaped load
encroachment characteristic the test should be carried out according to figures
and 22. In cases where the load encroachment characteristic is activated tests according to the adjusted
figures should be carried out.
Line distance protection REL670
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 Additional logic to enhance the security is included. This is applicable for all versions of 2.2.
2.2.6 -
2.2.6 -
© 2017 - 2023 Hitachi Energy. All rights reserved
Testing functionality by secondary injection
GUID-BE74F565-7465-4300-B2A6-D99CE8844147 v2
GUID-CF88748C-42E5-4D66-A356-85C3B5DE6231 v1
GUID-4DEF6D7D-E8CE-409A-9BCB-A0EC51DF61F8 v1
"Preparing the IED to verify
GUID-AA4E5C96-6455-43BE-9A9B-F422B1970FFA v2
GUID-AF589812-9034-4DA4-B081-E3ACBA947058 v10
23 and 24
Section 11
SEMOD53525-1 v2
settings".
and tables 21
91