Micom P634 - Overfluxing Stabilization (5 Th Harmonic Restraint)

3.21.8 Overfluxing Stabilization (5th Harmonic Restraint)
62Z9007A
Parameter
set 1
set 2
set 3
set 4
DIFF:
Overflux.bl. en. PSx
072 158
073 158
074 158
075 158
DIFF:
Overflux.bl.1 trigg.
[ 041 121 ]
DIFF:
I(5⋅f0),1
303 311
DIFF:
Overflux.bl.2 trigg.
[ 041 122 ]
DIFF:
Overflux.bl.3 trigg.
[ 041 123 ]
DIFF:
I(5⋅f0),2
303 312
DIFF:
I(5⋅f0),3
303 313
DIFF:
Ov. I(5f0)/I(f0) PSx
072 160
073 160
074 160
075 160
DIFF:
Ov. I(5f0)/I(f0) PSx
[ * ]
DIFF:
Overflux.bl. en. PSx
[ * ]
0: No
1: Yes
0
1
I(5⋅f0) I(5⋅f0)/I(f0)
5⋅f0
I(f0)
f0
I(5⋅f0)
5⋅f0
I(f0)
f0
I(5⋅f0)
5⋅f0
I(f0)
f0
I(5⋅f0)/I(f0)
I(5⋅f0)/I(f0)
DIFF:
Id,1
303 303
DIFF:
Id,2
303 304
DIFF:
Id,3
303 307
DIFF:
Meas.system 1 trigg.
[ 041 124 ]
DIFF:
Meas.system 2 trigg.
[ 041 125 ]
DIFF:
Meas.system 3 trigg.
[ 041 126 ]
<4⋅Iref
DIFF:
Overflux.bl. trigg.
[ 019 202 ]
Fig. 3-96: Overfluxing stabilization
If the transformer is loaded with a voltage in excess of the nominal voltage,
saturation effects occur. Without stabilization, these could lead to differential
protection tripping. The fact that the current of the protected object under
P634
3 Operation
3-138 P634/EN M/R-42-A // P634‑311‑653