
Table 75. Fuse failure supervision VDSPVC
Function
Range or value
Accuracy
Operate value, block of main fuse
failure
(10.0-80.0)% of UBase
±0.5% of Ur
Reset ratio
<110%
Operate time, block of main fuse
failure at 1 to 0 x U
r
Min. = 5 ms
–
Max. = 15 ms
Reset time, block of main fuse
failure at 0 to 1 x U
r
Min. = 15 ms
–
Max. = 30 ms
Operate value, alarm for pilot fuse
failure
(10.0-80.0)% of UBase
±0.5% of Ur
Reset ratio
<110%
–
Operate time, alarm for pilot fuse
failure at 1 to 0 x U
r
Min. = 5 ms
–
Max. = 15 ms
Reset time, alarm for pilot fuse
failure at 0 to 1 x U
r
Min. = 15 ms
–
Max. = 30 ms
1MRK 505 346-BEN -
Line differential protection RED670 2.1 IEC
Product version: 2.1
ABB
85