6-700A Datasheet, PDF (2/2 Pages) Cooper Bussmann, Inc. – British Style BS 88

British Style BS 88
690V 6-700A
Bussmann^®
®
Electrical Characteristics
Total Clearing I²t
The total clearing I²t at rated voltage and
at power factor of 15% are given in the
electrical characteristics. For other volt-
ages, the clearing I²t is found by multi-
plying by correction factor, K , given as
a function of applied working voltage,
E_g, (RMS).
Arc Voltage
This curve gives the peak arc voltage,
U_L, which may appear across the fuse
during its operation as a function of the
applied working voltage, E_g, (RMS) at a
power factor of 15%.
1.6
K
1.4
1.2
1.0
0.8
0.6
0.4
1)
0.2
2)
E_g
200 300 400 500 600 660
1) CT, ET, EET, FE, FEE, MT, MMT
2) FM, FMM
Dimensions
Fig. 1: CT
4
5.5
U_L
1500
1)
1000
2)
500
E_g
200 400 600 660
1) CT
2) ET, FE, EET, FEE, FM, FMM
Fig. 2: ET, FE
7.1
Power Losses
Watts loss at rated current is given in
the electrical characteristics. The curve
allows the calculation of the power
losses at load currents lower than the
rated current . The correction factor, K_p ,
is given as a function of the RMS load
current, I_b , in % of the rated current .
1.0 _Kp
0.8
0.6
0.5
0.4
0.3
0.2
0.1
I_b
30 40 50 60 70 80 90 100%
Fig. 3: EET, FEE
8.7
54.8 64.3 74.6
48 63.5 77
46 70 94
6.4
8.7
8.7
Fig. 4: FM, MT
25.4
11.9
9.7
12.7
31.8
17.1
Fig. 5: FMM, MMT
19.1
25.4
37
19
50 A 113
13.5
“A”
Type Dimension
50 A 113
FM
80-85
FMM
80-85
MT
85
14
MMT
85
10.3
10.3
41
83
Dimensions in mm.
1mm = 0.0394∑ 1∑ = 25.4mm
38.1
38
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This bulletin is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Bussmann reserves the right,
without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Bussmann also reserves the right to change or update, without
notice, any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications.
7-18-01
SB01191
Form No.
Page 2 of 2
BIF Doc #720024