Página 17 - elastimold

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United States
Tel: 901.252.8000
800.816.7809
Fax: 901.252.1354
Technical Services
Tel: 888.862.3289
www.tnb.com
H-77
Elastimold
®
Molded Canister Fuses (MCAN)
Power & High Voltage —
Elastimold
®
& Hi-Tech
®
Fuse Products
Notes
: 1. Column A = 140–200% of transformer rating and Column B = 200–300% of transformer rating.
2. 8.3kV, 3–50A fuses are used in mounting code 4 canisters; 8.3kV 65–80A fuses and 15.5kV 3–50A fuses are used in mounting
code 5 canisters; 15.5kV 65A fuse and 23kV 3–50A fuses are used in mounting code 6 canisters.
3. 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 six times transformer full-load current for 1 second and three times transformer
full-load current for 10 seconds.
a. Fuse allows greater than 300% of transformer rating.
Recommended FX: in MCAN at 40° C Ambient Temperature
Recommended Fuse Current Ratings (Amperes)
Fuse Voltage
8.3kV
15.5kV
1-Phase
Transformer
kVA
Transformer 1-Phase Voltage Rating (kV), Phase to Ground
2.4
4.16
4.8
7.2
7.62
12
14.4
16
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
10
— 6
— 6
a
— 3
— 3
a
— 3
a
— 3
a
— 3
a
— 3
a
15
— 10
— 6
— 6
a
— 3
— 3
— 3
a
— 3
a
— 3
a
25
12
20
8
10
— 8
— 6
— 6
— 3
— 3
— 3
37.5
20
30
12
18
— 12
— 8
— 8
— 6
a
— 6
a
— 6
a
50
25
50
18
25
12
20
10
12
— 10
— 6
— 6
— 6
a
75
50
65
25
40
20
30
12
20
12
20
— 10
— 8
— 8
100
65
80
30
50
25
50
18
25
18
25
— 12
10
12
— 10
167
— — 65
80
65
80
30
50
30
50
18
25
18
25
12
20
250
— — —­
— 80
— 65
80
50
65
25
50
25
40
20
30
333
— — — — — — 80
— 65
— 50
65
30
65
25
50
500
— — — — — — — — — — 65
— 65
— 50
Recommended FX: in MCAN at 40° C Ambient Temperature
Recommended Fuse Current Ratings (Amperes)
Fuse Voltage
8.3kV
15.5kV
3-Phase
gndY-gndY
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
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
— 3
a
22.5
— 8
— 6
a
— 6
a
— 3
— 3
— 3
a
— 3
a
— 6
a
— 3
a
30
10 12 — 6
— 6
— 6
a
— 3
— 3
a
— 3
— 6
a
— 3
a
45
12 20 — 10 — 8
— 6
— 6
a
— 3
— 3
— 6
a
— 3
a
75
25 40 12 20 12 18 — 8
— 8
— 6
— 6
— 6
a
— 3
100
30 50 18 25 18 25 — 12 — 10 — 8
— 8
— 6
a
— 6
a
112.5
40 65 20 30 18 25 — 18 — 12 — 8
— 8
— 6
a
— 6
a
150
65 80 25 50 25 40 12 25 12 18 — 10 — 10 — 6
— 6
200
80 — 40­
65 30 50 18 30 18 25 12 18 — 12 — 8
— 8
225
— — 50 65 40 65 20 40 20 30 12 20 12 20 — 10 — 8
300
— — 65 80 65 80 25 50 25 50 18 25 18 25 — 12 — 12
500
— — — — — — 30 80 65 80 30 50 30 50 18 25 18 25
750
— — — — — — 65 — 80 — 65 80 50 — 25 50 25 50
1,000
— — — — — — — — — — 80 — — — 40 65 40 —
1,500
— — — — — — — — — — — — — — 65 — —­
—­