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Table 291:
The calculation of Load shed blocking signal for Bus Coupler configuration
CB configuration
setting
Conditions
Load shed blocking signal
Bus Coupler
A = input SND_IED_QVAL is Bad (Within measurement
cycle)
0
1
0
T
2
T
3
T
4
T
A
Load shed blocking
1
Bus Coupler
A = input SND_IED_QVAL is Bad (At measurement
cycle)
At the instance of
measurement cycle
0
1
0
T
2
T
3
T
4
T
A
Load shed blocking
1
Bus Coupler
A = input SND_IED_TEST is TRUE or SND_CB_POS is
Invalid
0
1
0
T
2
T
3
T
4
T
A
Load shed blocking
1
Bus Coupler
A = input SND_CB_POS is Intermediate
0
1
0
A
Load shed blocking
1
t (time)
time
Interm
CB
Snd
Δt'
time
Interm
CB
Snd
Δt
T, 2T and 3T are the measurement cycles.
Section 7
1MRS757256 F
Power management functions
252
PML630/Compact Load-Shedding Solution
Technical Manual
Содержание Relion 630 Series
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