Página 40 - elastimold

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H-100
Hi-Tech
®
FX Series Full-Range Current-Limiting Fuses
Power & High Voltage —
Elastimold
®
& Hi-Tech
®
Fuse Products
Recommended Trans-Guard
®
FX Mounted in a Standard Drywell Canister in Oil (at a max. oil temp. of 100° C)
Fuse Voltage
Recommended Fuse Current Ratings (Amperes)
5.5kv
8.3kV
15.5kv
23kv
3-Phase
Transformer
kVA
Transformer 3-Phase Voltage Rating (kV) Phase-to-Phase
2.4
4.16
4.8
7.2–7.96
8.32
12.47
13.2–14.4
20.8
22.9–24.9
c
34.5
c
A B A B A B A B A B A B A B A B A B A B
15
6
3
3
3
a
3
a
3
a
3
a
6
a
6
a
6
a
22.5
8 10
6
6
a
3
3
3
a
3
a
6
a
6
a
6
a
30
10 18
6
6
6
a
3
3
a
3
a
6
a
6
a
6
a
45
18 20 8 12 8
b
10
6
6
3
3
6
a
6
a
6
a
75
25 40 18 20 12 18 8 12 8
b
10
6
6
6
a
6
a
6
a
100
40 50 20 25 18 20 12
b
18 10 12
8
6
8
6
a
6
a
6
a
112.5
40 65 20 30 20 25 12 18 12
b
18 8
b
10
8
6
6
a
6
a
150
50 80*
25 40 25 40 18 20 18 20 10 18 10
b
12
6
6
6
a
200
75 100* 40 65 30 50 20 30 20 25 12 20 12
b
18 8 10
8
6
225
80*
40 75 40 65 25 40 20 30 18 20 12 20 8 12 8 10
6
300
65 80*
50 80*
30 50 30 40 20 25 20 25 12 18 12
b
18
8
500
100*
80*
60* 80*
50 80*
30 50 30 40 20 25 18 25 12 18
750
80*
80*
50 80*
50 60*
25 40 25 40 18 25
1000
60* 100* 60* 80*
40
40
20 30
1500
100*
50
40
2000
50
Notes:
Column A = 140–200% of transformer rating and Column B = 200–300% of transformer rating.
Fuses recommended in bottom chart must be mounted in a 15.5kV mounting code 5 drywell canister.
Recommended fuses meet inrush criteria of 12 times transformer full load current for .1 second and 25 times transformer full load current for .01 second. Fuses also meet cold load pickup
criteria of 6 times transformer full load current for 1 second and 3 times transformer full load current for 10 seconds.
* Indicates parallel fuse applications.
a Fuse allows greater than 300% of transformer rating.
b Fuse allows greater than 200% of transformer rating.
c Recommendations limited to gndY-gndY transformers with no more than 50% delta connected secondary load. Phase-to-ground rated fuses are frequently recommended for gndY-gndY
three phase transformers. In some cases, the fuses recommended in bottom chart may be suitable for use with transformers that are not gndY-gndY (contact the factory further information).
Recommended 8.3kV Trans-Guard
®
FX Mounted in 15.5kV Drywell Canister in Oil (at a max. oil temp. of 100° C)
fuse voltage
Recommended Fuse Current Ratings (Amperes)
8.3kv
3-Phase
Transformer
kVA
Transformer 3-Phase Voltage Rating (kV) Phase-to-Phase
2.4
4.16
4.8
7.2–7.96
8.32
A
B
A
B
A
B
A
B
A
B
112.5
65
150
80
200
80
X
65
225
80
130*
65
65
300
130
b
*
160*
65
80
80
500
160*
X
160*
80
130*
65
80
c
80
c
750
160*
130*
80
c
130*
80
c
130*
1000
160*
130*
160
c
*
130
b
*
160
c
*
1500
160
c
*
130*
X=Use an 8.3kV Drywell Canister. See top chart for fuse recommendations.