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1MRK 505 378-UEN Rev. K
TRIP is controlled by Gate 13 in the configuration.
Use the TRIP signal from the configured binary output to stop the timer.
4.
Compare the measured time with the set value tOper.
5.
Activate the BLOCK binary input.
6.
Switch on the fault current (110% of the setting) and wait longer than the set value tOper.
No TRIP signal should appear.
7.
Switch off the fault current.
8.
Set the measured current (fault current) in same phase to about 90% of the set operating
current IP>. Switch off the current.
9.
Switch on the fault current and wait longer than the set value tOper.
No TRIP signal should appear.
10.
Switch off the fault current.
11.5.14.3
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.
11.5.15
Voltage-restrained time overcurrent protection VRPVOC
Prepare the IED for verification of settings as outlined in section
section
11.5.15.1
Function revision history
Document
revision
A
B
C
D
E
F
G
H
J
11.5.15.2
Verifying the settings
Verifying settings by secondary injection
1.
Connect the test set for three-phase current injection and three-phase voltage injection to the
appropriate IED terminals.
2.
Go to Main menu /Settings /IED Settings /Current protection /VoltageRestOverCurr
( 51V,2(I>/U<))/VRPVOC (51V,2(I>/U<)):1 /General and make sure that the function is enabled,
that is, Operation is set to On.
3.
The test of the function may be performed by injecting restrain voltage and increasing the
injected current(s). Note the value at which the START and STOC signals are set.
Line differential protection RED670
Commissioning manual
"Preparing for test"
in this chapter.
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
Previously called settings Characterist and t_DefOC had their names changed to
Characteristic and t_OC for more clear understanding.
© 2017 - 2022 Hitachi Energy. All rights reserved
Testing functionality by secondary injection
GUID-764DA61A-D987-4358-867A-DA43ADDC6E57 v5
"Requirements"
and
GUID-9B72080E-B886-4138-B8BC-CCB99C289C87 v1
GUID-3A2B7FF5-330E-4A0D-AB74-EBAE6258C176 v1
GUID-39632D30-A8D8-417D-985C-8F886106783E v4
Section 11
SEMOD175021-42 v4
175
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