Página 18 - elastimold

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Technical Services
Tel: 888.862.3289
H-78
Elastimold
®
Molded Canister Fuses (MCAN)
Power & High Voltage —
Elastimold
®
& Hi-Tech
®
Fuse Products
Notes
: 1. Designs have a 50,000A RMS Symmetrical Rating (except for 3A,
15.5kV which was tested at 44kA maximum).
2. Fuses have a Rated Maximum Application Temperature of 65° C. (RMAT is the
maximum temperature of the air in contact with the MCAN housing, at which
fuses have been shown to be suitable for use.)
3. Tabulated Maximum Total I
2
t values are for currents of 50,000A at the nominal
voltage of the fuse. Fuses that have a Rated Maximum Voltage higher than their
Nominal Voltage Rating will have a higher I
2
t let-through when applied at voltages
up to these higher values. For example, Maximum Total I
2
t values are increased
by approximately 30% when 8.3kV fuses are applied at 10kV and approximately
25% when 15.5kV fuses are used at 17.2kV.
4. Maximum total I
2
t values are reduced for currents below 50,000A. For example,
at 10,000A, maximum total I
2
t values are approximately 15% less than the
published values.
5. Peak arc voltages quoted are for 50,000A 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 higher ambient temperatures may be determined
by de-rating the fuses by .2% per degree C over 25° C. For example: At 65° C,
the de-rating would be 40 x .2 = 8%, making the maximum continuous current
of a 30A fuse 34 x .92 = 31A.
7. 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 in Note #6.
See time-current characteristics for melting characteristics in this time region.
Electrical Characteristics of Hi-Tech
®
FX Fuses inside MCAN Canisters
Nominal
Fuse Voltage
Rating (kV)
Current
Rating
(Amps)
Fuse
CAT. NO.
Rated
Maximum
Voltage (kV)
Maximum
Continuous Current
(2) (6)
Peak Arc
Voltage
(kV)
(5)
Minimum
Melt i
2
t
(AMP
2
-SEC)
Maximum
Total i
2
t
(AMP
2
-SEC)
(3) (4)
25° C
40° C
65° C
8.3
3
HTFX230003
10
4.3
4.2
3.9
30
100
350
6
HTFX230006
9.5
9
8.5
32
620
2,700
8
HTFX230008
11.5
11
10.5
28
800
4,000
10
HTFX230010
13.5
13
12.5
28
800
4,000
12
HTFX230012
17.5
17
16
26
920
8,000
18
HTFX230018
19.5
19
18
26
1,310
9,500
20
HTFX230020
24
23
21.5
26
1,620
11,000
25
HTFX230025
29.5
28.5
27
26
3,660
22,000
30
HTFX230030
34
33
31
26
5,250
30,000
40
HTFX230040
40
39
36.5
26
8,700
50,000
50
HTFX230050
45.5
44
42
26
12,800
70,000
65
HTFX230065
8.8
70
68
64.5
23
34,000
200,000
80
HTFX230080
80
77.5
73.5
22
51,200
280,000
15.5
3
HTFX240003 (1)
17.2
4.3
4.2
3.9
51
100
510
6
HTFX240006
9.5
9
8.5
54
620
2,600
8
HTFX240008
11.5
11
10.5
46
800
3,700
10
HTFX240010
13.5
13
12.5
46
800
3,700
12
HTFX240012
17.5
17
16
43
920
6,500
18
HTFX240018
19.5
19
18
45
1,310
8,000
20
HTFX240020
24
23
21.5
45
1,620
10,000
25
HTFX240025
29.5
28.5
27
45
3,660
22,000
30
HTFX240030
34
33
31
45
5,250
30,000
40
HTFX240040
40
39
36.5
45
8,700
50,000
50
HTFX240050
44.5
43
40
45
12,800
70,000
65
HTFX240065
15.5
57.6
56
54.5
39
28,300
164,000
23
6
HTFX250006
23
9.5
9
8.5
67
620
3,100
8
HTFX250008
11.5
11
10.5
61
800
4,800
10
HTFX250010
13.5
13
12.5
61
800
4,800
12
HTFX250012
17.5
17
16
60
920
8,300
18
HTFX250018
19.5
19
18
60
1,310
11,200
20
HTFX250020
24
23
21.5
60
1,620
13,000
25
HTFX250025
29.5
28.5
27
60
3,660
28,000
30
HTFX250030
34
33
31
60
5,250
38,000
40
HTFX250040
38.5
37
35
60
8,700
61,000
50
HTFX250050­
44.5
43
40
60
12,800
82,000