Micom P631, Technical Manual

Page: 128 / 638

3.12.3.4 Angle Determination
The P631 determines the angle between the following currents if the associated
currents exceed the minimum threshold of 0.033 I
nom
:
●
Angle between the phase currents for each end of the transformer
●
Angle between the currents of the same phase between two ends of the
transformer
62Z8049A
MAIN:
Angle phi AB, end a
End a End b
[ 005 089 ]
MAIN:
Angle phi AB, end a
[ 005 089 ]
MAIN:
Angle phi BC, end a
[ 006 089 ]
MAIN:
Angle phi CA, end a
[ 007 089 ]
I̲A,z
MAIN:
General starting
[ 036 000 ]
MAIN:
Hardware fault
306 018
I̲B,z
I̲C,z
> 0.033⋅Inom
> 0.033⋅Inom
> 0.033⋅Inom
MAIN:
Angle phi AB, end b
[ 005 092 ]
MAIN:
Angle phi BC, end a
[ 006 089 ]
MAIN:
Angle phi BC, end b
[ 006 092 ]
MAIN:
Angle phi CA, end a
[ 007 089 ]
MAIN:
Angle phi CA, end b
[ 007 092 ]
Fig. 3-46: Determination of the angle between the phase currents, shown here for end a
P631 3 Operation
3-72 P631/EN M/R-11-C // P631-310-650