Página 99 - elastimold

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N :
1.
Designs have a 50,000 Amps rms. Symmetrical Rating (except 3A 17.2kV which was tested at 44kA maximum).
2.
Fuses have a Rated Maximum Application Temperature of 65ºC (RMAT is the maximum temperature of the air, in contact with the elbow
housing, at which they have been shown to be suitable for use).
3.
Tabulated Maximum Total I
2
t values are for currents of 50,000 amperes at the nominal voltage of the fuse. Values for 8.3kV fuses at
10kV are approximately 30% higher. Values for 17.2kV fuses at 15.5kV are approximately 20% lower.
4.
Maximum total I
2
t values are reduced for currents below 50,000 A. For example, at 10,000 A, maximum total I
2
t values are approximately
15% less than the published values.
5.
Peak arc voltages quoted are for 50,000 A currents at the rated maximum voltage listed. Reduced currents and voltages will reduce the
peak arc voltage. Consult the factory for further information.
6.
Maximum continuous currents at ambient temperatures other than those listed may be determined by derating the fuses by 0.2% per
degree C over 25º C. For example: At 40º C the derating would be 15 x .2 = 3%, making the maximum continuous current of a 17.2kV
25A fuse 31.5 x .97 = 30.5A.
7. Time-current characteristic curves are published at 25ºC. Reduction in the long time melting current of the fuses (approximately one hour
and longer) due to higher ambient temperatures is the same as described above for “maximum continuous currents”.
Nominal
Fuse
Voltage
Rating
(kV)
3
EFX083003-
E
4.3 4.2 3.9
30
100
350
6
EFX083006-
E
9.5 9.0 8.5
32
620
2,700
8
EFX083008-
E
11.5 11.0 10.5 28
800
4,000
10 EFX083010-
E
14.0 13.5 13.0 28
800
4,000
12 EFX083012-
E
19.0 18.5 17.5 26
920
8,000
18 EFX083018-
E
10.0
21.0 20.0 19.0 26
1,310
9,500
20 EFX083020-
E
26.0 25.0 24.0 26
1,620
11,000
25 EFX083025-
E
34.0 33.0 31.0 26
3,660
22,000
30 EFX083030-
E
37.5 36.5 34.5 26
5,250
30,000
40 EFX083040-
E
43.0 42.0 40.0 26
8,700
50,000
45 EFX083045-
E
49.0 47.0 45.0 26
12,800
70,000
65 EFX083065-
E
8.8
70.0 68.0 64.5 23
34,000 200,000
80 EFX083080-
E
80.0 77.5 73.5 22
51,200 280,000
6
EFX155006-
E
8.5 8.0 7.7
52
620
3,000
8
EFX155008-
E
10.5 10.0 9.5
40
800
4,300
10 EFX155010-
E
15.5
13.0 12.5 12.0 40
800
4,300
12 EFX155012-
E
16.0 15.5 15.0 38
920
8,000
18 EFX155018-
E
20.0 19.5 18.5 38
1,620
13,000
20 EFX155020-
E
23.5 22.5 21.5 38
2,200
16,500
3
EFX172003-
E
4.3 4.2 3.9
51
100
510
6
EFX172006-
E
9.5 9.0 8.5
54
620
3,250
8
EFX172008-
E
11.5 11.0 10.5 46
800
4,600
10 EFX172010-
E
14.0 13.5 13.0 46
800
4,600
12 EFX172012-
E
18.0 17.5 16.5 43
920
8,500
18 EFX172018-
E
17.2 20.0 19.5 18.5 45
1,310
10,000
20 EFX172020-
E
24.0 23.0 22.0 45
1,620
12,500
25 EFX172025-
E
31.5 30.5 29.0 45
3,660
27,500
30 EFX172030-
E
35.5 34.5 32.5 45
5,250
37,500
40 EFX172040-
E
41.0 40.0 38.0 45
8,700
62,500
45 EFX172045-
E
46.0 45.0 42.5 45
12,800
87,500
System
Voltage
Class
(kV)
Current
Rating
(Amps)
Fuse
Catalog
Number
Rated
Maximum
Voltage
(kV)
Maximum
Continuous Current
(2) (6)
Peak Arc
Voltage
(kV)
(5)
Minimum
Melt l
2
t
(AMP
2
-SEC)
Maximum
Total l
2
t
(3) (4)
(AMP
2
-SEC)
25
o
C 40
o
C 65
o
C
10.0
8.
15.5
17.2
8.3
15.5
17.2
15
25
25/28
BLE 1 – ELEC R C L C R C ER S CS OF EF -ELBOW F SES
PROTECTION AND CONTROL
Molded Fuse Products
Fused Elbow