CBOPEN
STV_AG
STV_BG
STV_CG
AND
ECHOL - cont.
TRWEI
WEI = Echo&Trip
AND
AND
OR
OR
AND
ANSI09000012-2-en.vsd
15 ms
0
0
100 ms
15 ms
0
15 ms
0
ANSI09000012 V2 EN
Figure 237:
Tripping part of the WEI logic, simplified diagram
12.2.7
Technical data
Table 341:
ZCRWPSCH (85) technical data
Function
Range or value
Accuracy
Operating mode of WEI logic
Disabled
Echo
Echo & Trip
-
Detection pickup phase-to-phase
and phase-to-neutral voltage
(10-90)% of VBase
± 0.5% of Vn
Reset ratio
<105%
-
Operate time for current reversal
logic
(0.000-60.000) s
± 0.5% ± 10 ms
Delay time for current reversal
(0.000-60.000) s
± 0.5% ± 10 ms
Coordination time for weak-end
infeed logic
(0.000-60.000) s
± 0.5% ± 10 ms
1MRK 506 335-UUS A
Section 12
Scheme communication
507
Technical manual
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