1.
Apply single-phase voltage below the set value
U1>
.
2.
Slowly increase the voltage until the ST1 signal appears.
3.
Note the operate value and compare it with the set value
U1>
.
The operate value in secondary volts is calculated according to the following
equations:
For phase-to-earth measurement:
U
UBase VT
VTprim
1
100
3
>
×
×
sec
IECEQUATION2426 V1 EN-US
(Equation 23)
For phase-to-phase measurement:
U
UBase
VT
VTprim
1
100
>
×
×
sec
IECEQUATION2427 V1 EN-US
(Equation 24)
4.
Decrease the voltage slowly and note the reset value.
5.
Set and apply about 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>.
8.
Repeat the test to check the inverse time characteristic at different over-voltage levels.
9.
Repeat the above described steps for Step 2 of the function.
11.5.2.2
Extended testing
GUID-BE4B4A36-CCEE-4020-B7DC-6A83A43D11F5 v2
1.
The tests above can be repeated for
2 out of 3
and for
3 out of 3
operation mode.
11.5.2.3
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.
11.5.3
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"
11.5.3.1
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
-
Table continues on next page
Section 11
1MRK 511 403-UEN Rev. L
Testing functionality by secondary injection
122
Bay control REC670
Commissioning manual
© 2017 - 2022 Hitachi Energy. All rights reserved
Содержание REC670
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