URGD Datasheet, PDF (2/2 Pages) List of Unclassifed Manufacturers – SEMICONDUCTOR PROTECTION FUSES

FRENCH CYLINDRICAL
URGD
SEMICONDUCTOR PROTECTION FUSES
Melting Time-Current Data
D
Tolerance for the mean pre-arcing current ± 8%
These curves indicate, for each rated current, the pre-arcing time vs. the R.M.S. pre-arcing current.
Clearing I²t vs. AC Operating Voltage
63 to 200A URGD
K
1,2
1
0,8
0,6
0,4
0,2
Um(V)
2000
Peak arc Voltage
63 to 200A URGD
1000
0
K
200
400
600
U(V)
250A URGD
Correction factor to
determine the clearing I²t of
a fuse operating below its
rated voltage.
0 100 200 300 400 500 600 700
250A URGD
These curves determine the
peak arc voltage across the
fuse terminals as a function of
the applied voltage.
1,2
Um(V)
2000
1
0,8
0,6
1000
0,4
0,2
0 100 200 300 400 500 600
U(V)
0 100 200 300 400 500 600 700
D 97