Página 11 - elastimold

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H-71
Elastimold
®
Molded Current-Limiting Fuses (MCLF)
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. Ratings in parentheses are 5.5kV fuses.
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 6 times transformer full-load current for 1 second and 3 times transformer full-load current
for 10 seconds.
a. Fuse allows greater than 300% of transformer rating.
Recommended MCLF at 40° C Ambient Temperature (3-Phase Transformer)
Recommended Fuse Current Ratings (Amperes)
Fuse Voltage
(5.5kv) 8.3kV
15.5kV
23kv
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
34.5
A B A B A B A B A B A B A B A B A B A B
15
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
22.5
— 10 — 10
a
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
30
— 10 — 10
a
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
45
— 20 — 10 — 10 — 10
a
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
75
30 40 — 20 — 20 — 10 — 10 — 10
a
— 10
a
— 10
a
— 10
a
— 10
a
100
40 50 20 30 20 30 — 20 — 10 — 10 — 10 — 10
a
— 10
a
— 10
a
112.5
40 65 20 30 20 30 — 20 — 20 — 10 — 10 — 10
a
— 10
a
— 10
a
150
50 (80)
30 50 30 40 20 30 — 20 — 10 — 10 — 10
a
— 10
a
— 10
a
200
65 (100)
40 65 40 50 20 30 20 30 — 20 — 20 — 10 — 10 — 10
a
225
(80)
(125)
50 65 40 65 30 40 30 50 — 20 — 20 — 10 — 10 — 10
a
300
(100)
(150)
65 (100)
65 (80)
40 50 30 50 20 30 20 30 — 20 10 20 — 10
500
(180)
— (100) (150) (100) (125)
65 (80)
50 80 30 50 30 50 20 30 20 30 — 20
750
— — (180)
— (125) (180)
(80)
(125)
80 115 50 80 50 65 30 50 30 40 20 30
1,000
— — — — (180)
— (125) (180)
115 — 65 100 65 100 50 65 40 65 30 40
1,500
— — — — — — (180)
— — — 100 — 100 — 65 100 65 80 40 —
2,000
— — — — — — — — — — — — — — 100 — 80 — 50 —
Recommended MCLF at 40° C Ambient Temperature (Single-Phase Transformer)
Recommended Fuse Current Ratings (Amperes)
Fuse Voltage
(5.5kV) 8.3kV
15.5kV
23kv
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
19.9
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
10
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
15
— 10 — 10
a
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
25
— 20 — 10 — 10 — 10
a
— 10
a
— 10
a
— 10
a
— 10
a
— 10
a
37.5
20 30 — 20 — 20 — 10 — 10 — 10
a
— 10
a
— 10
a
— 10
a
50
30 40 20 30 — 20 — 10 — 10 — 10
a
— 10
a
— 10
a
— 10
a
75
50 65 30 40 20 30 — 20 — 20 — 10 — 10 — 10 — 10
a
100
65 (80)
40 50 30 50 20 30 20 30 — 20 — 10 — 10 — 10
167
(100)
(150)
65 (80)
50 65 30 50 30 50 20 30 20 30 — 20 — 20
250
(150)
— (100)­
(125)
(80)
(100)
50 65 50 65 30 50 30 40 20 30 20 30
333
(180)
— (125)
(180)
(100)
(150)
65 100 65 100 50 65 30 50 30 50 20 40
500
— — (180)
— (150)
— 115 — 115 — 65 100 65 80 50 — 40 —
750
— — — — — — — — — — 100 — 80 100 — — — —
1,000
— — — — — — — — — — — — 100 — — — — —