ABB Relion 670 Series Commissioning Manual page 129

1MRK 511 403-UEN Rev. K
( )
t s
IECEQUATION2429 V1 EN-US
where:
t(s)
k1
U
U1>
8. Repeat the test for Step 2 of the function.
11.5.3.3 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.
11.5.4 Voltage differential protection VDCPTOV
Prepare the IED for verification of settings as outlined in section
"Preparing for test"
11.5.4.1 Function revision history
Document
revision
A
B
C
D
E
F
J
K
11.5.4.2 Check of undervoltage levels
This test is relevant if the setting BlkDiffAtULow = Yes.
Check of U1Low
Procedure
1. Connect voltages to the IED according to valid connection diagram and figure 27.
2. Apply voltage higher than the highest set value of UDTrip, U1Low and U2Low to the U1 three-
phase inputs and to one phase of the U2 inputs according to figure 27.
The voltage differential START signal is set.
Bay control REC670
Commissioning manual
k
1
=
 
U
−
1
 
>
 
U 1
Operate time in seconds
Settable time multiplier of the function for step 1
Measured voltage
Set start voltage for step 1
in this chapter.
Product History
revision
2.2.1 -
2.2.1 -
2.2.2 -
2.2.3 -
2.2.3 -
2.2.4 -
2.2.4 -
2.2.5 -
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Testing functionality by secondary injection
"Requirements" and section
GUID-04679E4E-E0D2-4BA6-A002-4020E52DB973 v1
Section 11
(Equation 25)
SEMOD54358-38 v4
SEMOD175258-3 v2
SEMOD175258-71 v2
SEMOD175258-75 v3
123