Slope = 0.8
Slope = 1
Operation
area
I
MinOp
99000068.vsd
phase ref
|
å
I
| - | I |
phase ref
|
å
I
| + | I
|
IEC99000068 V1 EN
Figure 88: Operate characteristics
Due to the formulas for the axis compared, |SIphase | - |I ref | and |S I phase
| + | I ref | respectively, the slope can not be above 2.
9.1.7 Technical data
Table 154: CCSRDIF (87) technical data
Function
Range or value Accuracy
Operate current (5-200)% of I
n
± 10.0% of I
n
at I £ I
n
± 10.0% of I at I > I
n
Block current (5-500)% of I
n
± 5.0% of I
n
at I £ I
n
± 5.0% of I at I > I
n
9.2 Fuse failure supervision SDDRFUF
9.2.1 Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Fuse failure supervision SDDRFUF - -
Section 9 1MRK 511 287-UUS A
Secondary system supervision
206
Technical manual
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