Hitachi RED670 - Completing the Test; Two Step Residual Overvoltage Protection ROV2 PTOV; Line Differential Protection RED670; Function Revision History

11.6.2.3 Completing the test
M13806-43 v6
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.
11.6.3 Two step residual overvoltage protection ROV2PTOV
SEMOD54358-3 v7
Prepare the IED for verification of settings outlined in Section
"Preparing the IED to verify settings".
11.6.3.1 Function revision history
GUID-22110E0B-DEFB-461F-A437-4D221DB88799 v2
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 -
H 2.2.4 -
J 2.2.5 -
11.6.3.2 Verifying the settings
SEMOD54358-35 v11
1. Apply a single-phase voltage either to a single-phase voltage input or to a residual voltage
input with the start value below the set value U1>.
2. Slowly increase the value until ST1 appears.
3. Note the operate value and compare it with the set value.
4. Decrease the voltage slowly and note the reset value.
5. Set and apply a 20% higher voltage than the measured operate value for one phase.
6. Measure the time delay for the TR1 signal and compare it with the set value.
7. Check the inverse time delay by injecting a voltage corresponding to 1.2 × U1>.
For example, if the inverse time curve A is selected, the trip signals TR1 and TRIP
operate after a time corresponding to the equation:
t s
k
U
U
( )
=
>
−






1
1
1
IECEQUATION2429 V1 EN-US (Equation 102)
where:
t(s) Operate time in seconds
k1 Settable time multiplier of the function for step 1
U Measured voltage
U1> Set start voltage for step 1
8. Repeat the test for Step 2 of the function.
Section 11 1MRK 505 378-UEN Rev. K
Testing functionality by secondary injection
184 Line differential protection RED670
Commissioning manual
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