1. Activate the guard input signal (CR_GUARD) of the IED.
2. Using the scheme selected, check that a signal accelerated trip (TRIP) is obtained when the guard
signal is deactivated.
11.12.1.7 Completing the test
M13868-84 v6
Continue to test another function or end the test by changing the TESTMODE setting to Disabled.
Restore connections and settings to the original values, if changed for testing purposes.
11.12.2 Phase segregated scheme communication logic for distance or
overcurrent protection ZPCPSCH (85)
GUID-33B76F26-DEEF-46C3-A66F-A8713B50E413 v2
Prepare the IED for verification of settings outlined in Section
"Preparing the IED to verify settings".
Check the scheme logic during the secondary injection test of the impedance protection functions.
Activating of the different zones and phases verifies that the CS_x signal are issued from the intended
zones. The CS_x signal from the independent tripping zone must have a tSendMin minimum time.
Check the tripping function by activating the CRLx inputs with the overreaching zone used to achieve the
CACCLx signals.
It is sufficient to activate the zones with all types of fault with the secondary injection.
11.12.2.1 Function revision history
GUID-BC7055A7-D5DF-470E-BB17-8A0ED3E40F4F v1
Document
revision
Product
revision
History
A 2.2.1 -
B 2.2.1 -
C 2.2.2 -
D 2.2.3 -
E 2.2.3 -
F 2.2.4 -
G 2.2.4 -
H 2.2.4 -
J 2.2.5 Added separate DOs for teleprotection permissive (TxPrm & RxPrm1), blocking (TxBlk &
RxBlk1) and direct trip (TxTr & RxTr1) transmit and receive signals in accordance with 61850
Ed 2.0.
11.12.2.2 Testing permissive underreaching
GUID-F8C6F099-5C88-466A-8C00-7211981B03B9 v1
1. Activate the receive (CRLx) signal in the IED.
2. Apply healthy normal load conditions to the IED for at least two seconds.
3. Apply a fault condition within the permissive zone.
4. Check that correct trip outputs, external signals, and indications are obtained for all the actual types
of fault generated.
1MRK 504 165-UUS Rev. J Section 11
Testing functionality by secondary injection
Transformer protection RET670 265
Commissioning manual
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