17. Make sure the current from this current input is included into both measuring
zones ZA and ZB simultaneously.
Check the value for the configuration parameter
ZoneSel
of the CTx, and
•
energize both the binary inputs
CTRLZA
and
CTRLZB
, if the value of
ZoneSel
is
CtrlIncludes
,
•
de-energize both the binary inputs
CTRLZA
and
CTRLZB
, If the value
of
ZoneSel
is
CtrlExcludes
,
•
go directly to the next step, otherwise
18. Make sure that the dedicated binary output
ACTIVE
from the
Zone
Interconnection
block has the logical value
one
.
19. Repeat the steps from
for both ZA and ZB.
10.3.1.3
Stability of the busbar differential protection
SEMOD65867-3 v5
For stability test one current input shall always be used as a reference input. The
reference current input then shall be tested for stability against all other current
inputs in the IED. It is recommended to use current input CT1 as the reference
current input. The typical connection between the three-phase current test set and
the IED for this type of tests is shown in Figure
.
3-Ph current
Test Set
L1
L2
L3
N
6B
7B
6A
7A
6B
7B
6A
7A
6B
7B
6A
7A
2B
3B
2A
3A
2B
3B
2A
3A
2B
3B
2A
3A
I2
I1
IEC01000113-2-en.vsd
REB 670
REB 670
REB 670
CT1
CTx
IEC01000113 V2 EN-US
Figure 13:
Typical test connection for CT1 and CTx current inputs of the
phase L1 when COMBITEST RTXP 24 test switch is delivered
together with the one-phase IED
The connections are shown for phase L1 only. Similar connection shall be used for
testing phase L2 and L3 also.
The test will be explained for CT1 and one general current input CTx (2 ≤ x ≤
Nmax, where Nmax is the maximum number of used CT inputs).
Section 10
1MRK 505 372-UEN A
Testing functionality by secondary injection
86
Busbar protection REB670 2.2 IEC
Commissioning manual
Содержание RELION REB670
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