ABB Relion 650 Series Technical Manual page 276

Section 9
Secondary system supervision
| åI
phase
I
IEC99000068 V1 EN-US
Figure 138: Operate characteristics
9.1.7 Technical data
Table 207: CCSRDIF (87) technical data
Function
Operate current
Block current
9.2 Fuse failure supervision SDDRFUF
9.2.1 Identification
Function description
Fuse failure supervision
270
| - | I |
ref
MinOp
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.
Range or value
(5-200)% of I
(5-500)% of I
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Slope = 1
Operation
Slope = 0.8
area
| åI
phase
Accuracy
± 10.0% of I
n
± 10.0% of I at I > I
± 5.0% of I
n
± 5.0% of I at I > I
IEC 61850 IEC 60617
identification identification
SDDRFUF -
1MRK 506 326-UUS B
| + | I |
ref
99000068.vsd
at I £ I
n n
n
at I £ I
n n
n
ANSI/IEEE C37.2
device number
-
Line distance protection REL650
Technical manual
M12358-1 v4
M14869-1 v2