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1MRK 506 377-UEN Rev. L
10.3.1.1
Function revision history
Document
revision
A
B
C
D
E
F
G
H
10.3.1.2
Verifying the settings
1.
Connect the test set for single-phase current injection to the protection terminals connected to
the CT in the power transformer neutral-to-earth circuit.
2.
Increase the injection current more than the IdMin setting and note the operating value of the
protection function.
3.
Check that all trip and start signals appear according to the configuration logic.
4.
Decrease the current slowly from operate value and note the reset value.
5.
Connect the timer and set the current to ten times the value of the IdMin setting.
6.
Switch on the current and note the operate time.
7.
Connect the test set to terminal L1 and neutral of the two-phase current input configured to
REFPDIF. Also inject a current higher than half the IdMin setting in the neutral-to-earth circuit
with the same phase angle and with polarity corresponding to an internal fault.
8.
Inject current into terminal L2 in the same way as in step 7 above and note the operate and
reset values.
9.
Inject a current equal to half the IdMin setting into terminal L1.
10.
Inject a current in the neutral-to-earth circuit with the same phase angle, amplitude and polarity
corresponding to an external fault.
11.
Finally check that trip information is stored in the event and disturbance recorder.
10.3.1.3
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.
10.3.2
Single-phase railway power transformer differential protection
T1PPDIF
Set the IED in Test Mode, and release the function to be tested. All other settings should be the
same as when the IED is in operation.
Logical signal values for the single-phase railway power transformer differential protection (T1PPDIF)
are available on the local HMI under Main menu /Test /Function status /Differential Protection /
T1PPDIF
To verify the signals and settings, the following fault types should be tested:
Railway application RER670
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
The upper limit of ROA setting range is changed from 90 degrees to 119
degrees.
2.2.5
-
© 2017 - 2022 Hitachi Energy. All rights reserved
Section 10
Testing functionality by secondary injection
GUID-BFAA47D8-C2B6-4EC2-9129-B031333BAD19 v2
SEMOD55252-86 v12
SEMOD55252-118 v5
GUID-BF394A36-7CDA-46EB-B855-94B4DF5947B9 v2
69
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