Technical Data; Fuse Failure Supervision Sddrfuf; Identification - ABB REC650 Technical Manual

Section 9
Secondary system supervision
9.1.7
9.2
9.2.1
194
| åI
| - | I |
phase ref
I
MinOp
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.

Technical data

Table 154: CCSRDIF technical data
Function
Operate current
Block current

Fuse failure supervision SDDRFUF

Identification

Function description
Fuse failure supervision
Slope = 1
Slope = 0.8
| åI
Range or value
(5-200)% of I
r
(5-500)% of I
r
IEC 61850 IEC 60617
identification identification
SDDRFUF -
1MRK 511 287-UEN A
Operation
area
| + | I |
phase ref
99000068.vsd
Accuracy
± 10.0% of I at I £ I
r r
± 10.0% of I at I > I
r
± 5.0% of I at I £ I
r r
± 5.0% of I at I > I
r
ANSI/IEEE C37.2
device number
-
Technical manual