Toshiba GR200 Series Instruction Manual page 414

Line differential protection ied
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Z1S DIR
Figure 2.32-6 shows trigger signals for FL calculation. Result signals
protection functions are summarized by logic "OR", which provides the trigger signal.
Note: The result signals can start the FL calculation, but the result signals are not the same as the
1
Note: In the FL, user should verify the direction between the FL function and the other
protection function. For example, if Forward is set for the scheme switch [FL-Dir],
user should set Forward for the respective scheme switches [Z*S-DIR], [Z*G-DIR]
and [OC*-DIR]. If contradiction is found, the FL does not operate. For further
information, see section 2.32.6(iii).
Trigger signal for FL calculation
Forward
Z1S DIR
Reverse
Z1S
Forward
Z1XS DIR
Reverse
Z1XS
Forward
Reverse
Z2S DIR
Z2S
Forward
Reverse
Z3S DIR
Z3S
Result signal of ZS function
Forward
Z1G DIR
Reverse
Z1G
Forward
Z1XG DIR
Reverse
Z1XG
Forward
Z2G DIR
Reverse
Z2G
Forward
Z3G DIR
Reverse
Z3G
Result signal of ZG function
Forward
OC1-Dir
Reverse
OC1
Forward
OC2-Dir
Reverse
OC2
Result signal of OC function
DIFL
≥1
RDIF
Result signal of DIF function
310022EC62
FLZ_LocF
310022EC66
FLAZ_LocF
310022EC63
FLZ_LocR
PLC signals
Figure 2.32-6 Calculation trigger from functions and PLC
Figure 2.32-5.
≥1
≥1
≥1
≥1
≥1
≥1
Forward
≥1
Reverse
operation signals of
- 391 -
6F2S1914 (0.49)
from the respective
1
≥1
Forward
&
≥1
Reverse
&
Forward
FL-DIR
Reverse
GRL200 (Soft 033 & 037)
Trigger signal
for calculation
Trigger signal
for calculation

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