•
UdifWrn>
=
5% UB
•
UMin>
=
50% UB
•
VoltRatioL1
=
0.5
2.
Activate RESETCOMP input to ensure that the stored values are reset.
3.
The expected output is monitored in the following path from the local HMI client:
Main menu /
Test/Function status /Unbalance protection/CapBankPhaseVoltageDiff(87V, Ud>)/
SCPDPTOV(87V, Ud>):x/Outputs
, where x = instance number.
4.
check the respective operation of warning, alarm, and trip.
Step no.
Changes after step 2
Expected output
4-a*
Inject constant bus voltages of U
L1
= 60 V at 0°,
U
L2
= 60 V at 240°, and U
L3
= 60 V at 100° in
secondary at rated frequency
•
UL1, UL2, and UL3 should show 218.18
kV
•
UNSCB should show 6.94kV
4-b
Inject constant tap voltage of U
TapL1
= 30 V in
secondary at rated frequency
UTAPL1 should show 109.09 kV
RESETCOMP Test
4-c
Activate binary input RESETCOMP for 1 s
USEDURATL1 should show 0.5 (
VoltRatioL1
)
TRIGCOMP Test
Repeat
4-d
Inject U
TapL1
= 28.17 V in secondary at rated
frequency
•
DIFURATL1 should become HIGH
•
URATIOL1 and USEDURATL1 should
show 0.4 and 0.5 respectively
4-e **
Activate binary input TRIGCOMP for 1 s
•
The output COMPEXED should become
HIGH for 100 ms and LASTCOMP output
should display the date and time of
compensation
•
URATIOL1 and USEDURATL1 should
show 0.4
•
DIFURATL1 should become LOW
WARNING Signal Test
4-f
Inject U
TapL1
= 29.50 V in secondary at rated
frequency
•
WARNING and WRNL1 signals should
become HIGH after a time delay given by
the setting
tDefWrn
•
PUDIFL1 should show 5.28 %
ALARM Signal Test
Repeat
and
4-g
Inject U
TapL1
= 30.20 V in secondary at rated
frequency
•
ALARM and ALML1 signals should
become HIGH after a time delay given by
the setting
tDefAlm
•
PUDIFL1 should show 8.06%
TRIP Signal Test
Repeat
and
Table continues on next page
Section 11
1MRK 511 403-UEN Rev. L
Testing functionality by secondary injection
140
Bay control REC670
Commissioning manual
© 2017 - 2022 Hitachi Energy. All rights reserved
Summary of Contents for REC670
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