Completing The Test; Power Swing Detection, Blocking And Unblocking Zmburpsb; Function Revision History; Verifying The Signal And Settings - Hitachi RED670 Commissioning Manual

1MRK 505 378-UEN Rev. K
bridging the two states, without discontinuities, even when a pre-fault load current is present. If not,
the result of the test will not be valid.
11.4.8.6

Completing the test

Continue to test another function or end the test by changing the TESTMODE setting to Off. Restore
connections and settings to the original values, if changed for testing purposes.
11.4.9

Power swing detection, blocking and unblocking ZMBURPSB

Prepare the IED for verification of settings outlined in Section
Values of the logical signals for ZMBURPSB are available on the local HMI under Main menu /Test/
Function status /Impedance protection/PowerSwingDetection(68,Zpsb) /
ZMBURPSB(68;Zpsb):1
The Signal Monitoring tool in PCM600 shows same signals that are available on the local HMI.
11.4.9.1

Function revision history

Document
revision
A
B
C
D
E
F
G
H
11.4.9.2

Verifying the signal and settings

Measure the operating characteristics during constant current conditions. Keep the measured current
as close as possible to the rated value of the IED or lower. Ensure that it is higher than the set
minimum operating current.
Ensure that the maximum continuous current to the IED does not exceed four times of its rated
value, if the measurement of the operating characteristics runs under constant voltage conditions.
The test is mainly divided into two parts, one aim is to verify that the settings are in accordance with
the selectivity plan and another aim is to verify the operation of ZMBURPSB.
Before starting this testing process, all impedance measuring zones shall be set and in operation.
Ensure that the inner zone of ZMBURPSB must cover all impedance measuring zones that are set
for operation.
Test of the interactions or combinations that are not configured are not considered in this instruction.
Always set Operation to On to check the performance of power swing detection, blocking and
unblocking during testing.
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 Power swing unblocking feature is made available to have phase selection and thereby,
releasing distance measuring loops for faults during power swing. Added new outputs
FLTL1, FLTL2, FLTL3, FLT1PH, FLT2PH, FLT3PH, STCND, and RELCND. IEC 61850
LN is renamed as ZMBURPSB.
2.2.5 -
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Testing functionality by secondary injection
GUID-7FA2EA27-B6E2-48AB-8D53-22425E322FFA v1
GUID-7A9D2225-A0F2-4B51-8F67-C0100BB04DB9 v1
"Preparing the IED to verify
GUID-519970E3-BC9F-4DB7-9608-4CBD4E2ACB30 v2
GUID-CF76494E-8A1C-4A6E-AA98-6B2F3881501C v1
Section 11
settings".
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