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E
2.2.3
-
F
2.2.4
-
G
2.2.4
-
H
2.2.4
-
J
2.2.4
The phase selection logic is added to allow phase segregated trip. The new phase
selections outputs added to this release are PHSELL1, PHSELL2 and PHSELL3. The
setting
EnPhaseSel
is added to enable or disable phase selection. The maximum value
changed to 2000.0 % of IBase for
IMin1, IMin2, IMin3
and
IMin4
settings.
K
2.2.5
The harmonic restrain function changed to freeze the definite and IDMT timers.
11.4.4.2
Four step directional earth fault protection
SEMOD53296-208 v8
1.
Connect the test set for single current injection to the appropriate IED terminals.
Connect the injection current to terminals L1 and neutral.
2.
Set the injected polarizing voltage slightly larger than the set minimum polarizing voltage (5% of
Ur) and set the injection current to lag the voltage by an angle equal to the set reference
characteristic angle (
AngleRCA
), if the forward directional function is selected.
If reverse directional function is selected, set the injection current to lag the polarizing voltage
by an angle equal to RCA+ 180°.
3.
Increase the injected current and note the value at which the studied step of the function
operates.
4.
Decrease the current slowly and note the reset value.
5.
If the test has been performed by injection of current in phase L1, repeat the test, injecting
current into terminals L2 and L3 with a polarizing voltage connected to terminals L2,
respectively L3.
6.
Block lower set steps when testing higher set steps according to the instructions that follow.
7.
Connect a trip output contact to a timer.
8.
Set the injected current to 200% of the operate level of the tested step, switch on the current
and check the time delay.
For inverse time curves, check the operate time at a current equal to 110% of the operate
current for
txMin
.
9.
Check that all operate and start contacts operate according to the configuration (signal
matrixes).
10.
Reverse the direction of the injected current and check that the step does not operate.
11.
Check that the protection does not operate when the polarizing voltage is zero.
12.
Repeat the above described tests for the higher set steps.
13.
Finally, check that start and trip information is stored in the event menu.
11.4.4.3
Four step non-directional earth fault protection
SEMOD53296-202 v5
1.
, but without applying any polarizing voltage.
11.4.4.4
Completing the test
SEMOD53296-122 v5
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.
11.4.5
Four step negative sequence overcurrent protection NS4PTOC
GUID-EB1A8DFD-5BAC-4024-ADA2-D9BE7A2B50A0 v2
Prepare the IED for verification of settings as outlined in section
1MRK 511 403-UEN Rev. L
Section 11
Testing functionality by secondary injection
Bay control REC670
91
Commissioning manual
© 2017 - 2022 Hitachi Energy. All rights reserved
Summary of Contents for REC670
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