t s
k
U
U
( )
=
>
−
1
1
1
IECEQUATION2429 V1 EN-US
(Equation 20)
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.
10.5.3.2
Completing the test
SEMOD54358-38 v4
Continue to test another function or end the test by changing the
TESTMODE
setting to
Off
. Restore connections and settings to their original values, if they were
changed for testing purposes.
10.5.4
Voltage differential protection VDCPTOV
SEMOD175258-3 v2
Prepare the IED for verification of settings as outlined in section
and section
10.5.4.1
Check of undervoltage levels
SEMOD175258-71 v2
This test is relevant if the setting
BlkDiffAtULow
=
Yes
.
Check of U1Low
SEMOD175258-75 v3
Procedure
1.
Connect voltages to the IED according to valid connection diagram and figure
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
.
The voltage differential START signal is set.
Section 10
1MRK 505 372-UEN A
Testing functionality by secondary injection
116
Busbar protection REB670 2.2 IEC
Commissioning manual
Содержание RELION REB670
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