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Functions
Sequence
6-94
Figure 6-53 shows the logic diagram of the permissive underreach transfer trip
scheme for one line end.
Distance Teleprotection
FNo 4003
>Dis.Telep. Blk
PUTT
„0"
FNo. 3464
from
POTT over PI
Topol.complet
PI
FNo. 4005
Dis.T.Carr.Fail
Send Prolong.
Dis. forward
&
Dis PU Z1 L1
&
Dis PU Z1 L2
&
Dis PU Z1 L3
&
Dis PU Z1
2102 Type of Line
Two Terminals
„1"
FNo. 4006
Three Terminals
>DisTel Rec.Ch1
Two Term.
FNo. 4010
>Dis.T.Rec.Ch2
Three Term.
FNo. 4007
>Dis.T.RecCh1L1
FNo. 4008
>Dis.T.RecCh1L2
FNo. 4009
>Dis.T.RecCh1L3
FNo. 4088
Dis.T.RecL1Dev2
FNo. 4089
Dis.T.RecL2Dev2
FNo. 4090
Dis.T.RecL3Dev2
FNo. 4091
Dis.T.RecL1Dev3
FNo. 4092
Dis.T.RecL2Dev3
FNo. 4093
Dis.T.RecL3Dev3
Figure 6-53
Logic diagram of the permissive underreach transfer trip (PUTT) scheme using
Z1B (one line end)
The permissive transfer trip only functions for faults in the forward direction. Accord-
ingly, the first zone Z1 and the overreaching zone Z1B of the distance protection must
definitely be set to Forward : address 1301 Op. mode Z1 and 1351 Op. mode Z1B ,
refer also to Sub-section 6.2.4.2 under the margin heading "Independent Zones Z1 up
to Z5" and "Controlled Zone Z1B".
121
Teleprot. Dist.
≥1
2103
0
T
&
0
T
&
0
T
&
&
0
T
&
≥1
&
&
&
&
&
&
&
&
&
FNo. 4052
>Dis.Telep.OFF
≥1
FNo. 4055
Dis.T.Carr.Fail
FNo. 4057
Dis. T. SEND L1
FNo. 4058
Dis. T. SEND L2
FNo. 4059
Dis. T. SEND L3
FNo. 4056
Dis. T. SEND
121 Teleprot. Dist.
PUTT
≥1
POTT over PI
≥1
PUTT
POTT over PI
≥1
PUTT
POTT over PI
≥1
≥1
≥1
C53000-G1176-C156-2
Protection Data
Interface
Weak Infeed
Tripping
refer Fig. 6-89
≥1
Dis Rel Z1B L1
Dis Rel Z1B L2
Dis Rel Z1B L3
7SA6 Manual
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