E No:
E0503 Rev.01
File Ref: 240-50
CP No.: CP0508 Rev. 01
Page: 1 of 9
CERTIFIED
TEST REPORT
Faulted Circuit Interrupting Tests on
Type CMU Power Fuses
REV. 01 DATE: August 10, 2005 • ORIGINAL REPORT DATE: May 25, 2005 • © Cooper Power Systems, Inc.
E No:
E0503 Rev.01
File Ref: 240-50
CP No.: CP0508 Rev. 01
Page: 2 of 9
Faulted Circuit Interrupting Tests on
Type CMU Power Fuses
CERTIFICATION
Statements made and data shown are, to the best of our knowledge and belief,
correct and within the usual limits of commercial testing practice. The following report is
a true and correct summary of data from tests performed by Powertech High Power Laboratory
in Surrey, British Columbia Canada from November 29 to December 2, 1999 and April 2, 2000.
The tests demonstrate the capability of the Cooper Power Systems type CMU Power Fuses to
safely interrupt circuits when applied within their assigned ratings.
_________________________
Frank J. Muench
Manager, Line Protection
Devices Engineering
E No:
E0503 Rev.01
File Ref: 240-50
CP No.: CP0508 Rev. 01
Page: 3 of 9
INTRODUCTION
The tests detailed in the following report were performed to present the
TESTS TO PROVE 12.8 kA (symmetrical), 20.5 kA (asymmetrical)
INTERRUPTING CAPABILITY AT 27.1 kV
TO IEEE C37.40-1993, C37.41-1994, C37.46-1981 & C37.47-1981.
for
TYPE CMU 703006 to 703200, CMU 613005 to 613200,
CMU 713015 to 713200
POWER FUSES
E No:
E0503 Rev.01
File Ref: 240-50
CP No.: CP0508 Rev. 01
Page: 4 of 9
Object
To prove the interrupting ability of Cooper Power Systems CMU 613005 - 613200, CMU 703006 703200, & CMU 713015 - 713200 Power Fuses.
Power Fuses
Maximum Interrupting Current
12.5 kA (sym), 20 kA (asym)
Power Frequency Recovery Voltage
27.1 kV
Frequency
60 Hz
Equipment Tested
CMU 703006 Fuses
CMU 713065 Fuses
These fuses are the minimum and maximum ratings of a design family that covers the 3K to
80K, 5E to 80E, and 15SE to 65SE ratings.
CMU 703100 Fuses
CMU 713125 Fuses
These fuses are the minimum and maximum ratings of a design family that covers the 100K
& 140K, 100E & 125E, and 80SE to 125SE.
CMU 613150 Fuses
This Fuse does not fit into any of the design families.
CMU 613175 Fuses
CMU 713200 Fuses
These fuses are the minimum and maximum ratings of a design family that covers the
200K,175E & 200E, and 150SE to 200SE ratings.
Test Arrangement
For 'dropout' tests, each fuse was equipped with a set of S&C end fittings, Cat. # 3095 (comprising
one top end fitting and one bottom end fitting). The fuse was tested in a S&C drop-out mounting
Cat. # 92123R3.
For 'non-dropout' tests, each fuse was equipped with a set of S&C end fittings, Cat # 3097
(comprising one top fitting and one bottom end fitting and an S&C Silencer Cat # G-4780R4).
The fuse was tested in a S&C pad mount mounting, Cat # 90423.
E No:
E0503 Rev.01
CP No.: CP0508 Rev. 01
File Ref: 240-50
Page: 5 of 9
Test Conditions
Tests were carried out to the requirements of ANSI-IEEE Std C37.40-1993, and IEEE Std C37.411994, Tables 2, 3, and 4.
Series 1 tests were carried out 100% of rated maximum voltage, thus eliminating the need to carry
out Series 2 tests.
The test circuit was arranged to monitor leakage current on tests on 'non-dropout' tests, and the
circuit was opened after the leakage current had been less than 1 mA for 2 min.
The test circuits are listed in Table 1.
The test results are listed in Tables 2.i through 2.iii.
Detailed results and oscillograms are in Powertech Labs Inc. Test Report No: 12265-B-26.
E No:
E0503 Rev.01
File Ref: 240-50
CP No.: CP0508 Rev. 01
Test Sample
Series
#
Page: 6 of 9
Test
#
Fuse
Cat. #
Muffler
Vapp Ipros Vrec
kV
kA kV
Ipk
kA
Varc Closing Melt Clear MW Kj Vrec
kV Angle Time Time
Held
msec. msec
sec.
Result
1-33
1-35
1-36
1-41
1-42
1-43
CMU 703006
CMU 703006
CMU 703006
CMU 703006
CMU 703006
CMU 703006
1
1
1
1
1
1
1-33
1-35
1-36
1-41
1-42
1-43
N
N
N
Y
Y
Y
27.2
27.2
27.2
27.2
27.2
27.2
12.8
12.8
12.8
12.8
12.8
12.8
27.2 33.0
27.2 19.4
27.2 31.8
27.2 32.9
27.2 19.2
27.2 31.7
41.4
52.2
43.7
42.3
52.3
45.2
0
90
150
0
90
150
.6
.2
.7
.95
.4
1.0
13.8
16.2
15.1
13.5
16.2
15.0
42
.6
42
52
17
49
229 .5
183 .5
228 .5
266 120
97 120
245 120
Cleared
Cleared
Cleared
Cleared
Cleared
Cleared
1-37
1-39
1-39
1-44
1-45
1-46
CMU 713065
CMU 713065
CMU 713065
CMU 713065
CMU 713065
CMU 713065
1
1
1
1
1
1
1-37
1-39
1-39
1-44
1-45
1-46
N
N
N
Y
Y
Y
27.2
27.2
27.3
27.2
27.1
27.1
12.8
12.8
12.8
12.8
12.8
12.8
27.2 33
27.2 19.5
27.3 32
27.2 33.1
27.1 18.3
27.1 31.4
39.1
51.6
40.4
39.0
52.4
40.7
0
90
150
0
90
150
3.3
2.2
4.6
3.3
2.2
5.2
13.9
16.2
15.2
14.0
16.2
15.3
28
25
24
17
49
22
161 .5
122 .5
127 .5
97 120
245 120
115 120
Cleared
Cleared
Cleared
Cleared
Cleared
Cleared
1-6
1-7
1-8
1-19
1-20
1-21
CMU 703100
CMU 703100
CMU 703100
CMU 703100
CMU 703100
CMU 703100
1
1
1
1
1
1
1-6
1-7
1-8
1-19
1-20
1-21
N
N
N
Y
Y
Y
27.3
27.3
27.3
27.4
27.2
27.2
12.8
12.8
12.8
12.8
12.8
12.8
27.3
27.3
27.3
27.4
27.2
27.2
33.1
18.8
31.7
32.9
18.5
31.6
42.3
49.5
42.4
41.4
53.0
44.1
0
90
150
0
90
150
3.6
2.6
5.3
3.6
2.5
5.3
13.8
16.2
15.1
13.7
16.2
15.1
45
43
36
40
39
38
248 .5
216 .5
200 .5
220 120
194 120
204 120
Cleared
Cleared
Cleared
Cleared
Cleared
Cleared
1-14
1-15
1-16
1-22
1-23
1-24
CMU 713125
CMU 713125
CMU 713125
CMU 713125
CMU 713125
CMU 713125
1
1
1
1
1
1
1-14
1-15
1-16
1-22
1-23
1-24
N
N
N
Y
Y
Y
27.3
27.4
27.4
27.2
27.2
27.2
12.8
12.8
12.8
12.8
12.8
12.8
27.3 33.3
27.4 19.4
27.4 32.0
27.2 33.1
27.2 19.3
27.2 31.7
39.4
49.4
40.8
40.3
51.4
42.1
0
90
150
0
90
150
4.9
4.6
4.3
5.0
7.7
6.4
14.0 29.2 161 .5
16.4 17 92 .5
15.2 24 132 .5
15.0 32 179 120
16.4 18 96 120
15.1 30 163 120
Cleared
Cleared
Cleared
Cleared
Cleared
Cleared
1-10
1-11
1-12
1-25
1-26
1-27
CMU 613150
CMU 613150
CMU 613150
CMU 613150
CMU 613150
CMU 613150
1
1
1
1
1
1
1-10
1-11
1-12
1-25
1-26
1-27
N
N
N
Y
Y
Y
27.3
27.3
27.3
27.3
27.3
27.3
12.8
12.8
12.8
12.8
12.8
12.8
27.3 33.1
27.3 19.2
27.3 31.8
27.3 33.0
27.3 19.1
27.3 31.8
39.4
49.5
40.7
39.9
51.4
41.3
0
90
150
0
90
150
4.5
4.1
6.5
4.6
4.0
6.4
13.7
16.4
15.4
14.0
16.3
15.4
32
18
25
15
23
29
183 .5
99 .5
148 .5
61 120
120 120
158 120
Cleared
Cleared
Cleared
Cleared
Cleared
Cleared
1-3
1-9
1-5
1-28
1-29
1-30
CMU 613175
CMU 613175
CMU 613175
CMU 613175
CMU 613175
CMU 613175
1
1
1
1
1
1
1-3
1-9
1-5
1-28
1-29
1-30
N
N
N
Y
Y
Y
27.3
27.3
27.3
27.3
27.3
27.3
12.8
12.8
12.8
12.8
12.8
12.8
27.3
27.3
27.3
27.3
27.3
27.3
33.0
19.0
31.7
33.1
19.0
31.4
39.2
49.5
42.1
41.5
51.9
43.1
0
90
150
0
90
150
4.5
4.5
6.2
4.8
4.4
6.4
13.8
16.2
15.0
13.9
16.4
15.2
38
26
34
44
28
35
217 .5
134 .5
192 .5
239 120
140 120
188 120
Cleared
Cleared
Cleared
Cleared
Cleared
Cleared
1-17
1-18
1-1
1-31
1-32
1-13
CMU 713200
CMU 713200
CMU 713200
CMU 713200
CMU 713200
CMU 713200
1
1
1
1
1
1
1-17
1-18
1-1
1-31
1-32
1-13
N
N
N
Y
Y
Y
27.4
27.4
27.3
27.3
27.3
27.4
12.8
12.8
12.8
12.8
12.8
12.8
27.4
27.4
27.3
27.3
27.3
27.4
33.3 39.6
19.5 50.8
31.8 39.7.
33.2 39.1
19.2 51.5
32.0 41.1
0
90
150
0
90
150
6.2
11.0
8.2
6.2
11.8
7.8
14.0
24.1
15.4
13.9
24.4
15.2
30
34
25
30
34
34
155 .5
185 .5
125 .5
152 120
182 120
139 120
Cleared
Cleared
Cleared
Cleared
Cleared
Cleared
E No:
E0503 Rev.01
File Ref: 240-50
CP No.: CP0508 Rev. 01
Page: 7 of 9
Test
#
Fuse
Cat. #
Test Sample Muffler Vapp Ipros Vrec Ipk Varc Closing Melt Clear MW
Series
#
kV
kA
kV kA kV Angle Time Time
msec. msec
Kj Vrec
Held
sec.
Result
2-37
2-38
2-39
2-40
2-41
2-42
CMU 703006
CMU 703006
CMU 703006
CMU 703006
CMU 703006
CMU 703006
3
3
3
3
3
3
2-37
2-38
2-39
2-40
2-41
2-42
N
N
N
Y
Y
Y
27.2
27.2
27.2
27.2
27.2
27.2
8.52
8.52
8.52
8.52
8.52
8.52
27.2
27.2
27.2
27.2
27.2
27.2
20.8
13.0
21.6
22.5
12.9
21.7
39.1
51.7
41.0
39.0
50.7
39.0
0
90
150
0
90
150
1.1
.5
1.3
1.1
.6
1.4
14.6
16.3
15.2
13.9
16.3
15.4
21 93 .5
18 90 .5
29 158 .5
25 135 120
19 97 120
23 126 120
Cleared
Cleared
Cleared
Cleared
Cleared
Cleared
2-43
2-44
2-45
2-46
2-47
2-48
CMU 713065
CMU 713065
CMU 713065
CMU 713065
CMU 713065
CMU 713065
3
3
3
3
3
3
2-43
2-44
2-45
2-46
2-47
2-48
N
N
N
Y
Y
Y
27.2
27.2
27.2
27.2
27.2
27.1
8.52
8.52
8.52
8.52
8.52
8.52
27.2
27.2
27.2
27.2
27.2
27.1
22.6
13.0
21.9
22.6
13.2
21.8
39.0
49.9
39.2
39.1
49.9
39.0
0
90
150
0
90
150
3.9
3.4
9.7
4.0
2.5
5.7
14.2
16.4
19.8
14.1
24.0
15.6
12 62 .5
12 62 .5
9 59 .5
12 72 120
30 177 120
10 62 120
Cleared
Cleared
Cleared
Cleared
Cleared
Cleared
2-8
2-9
2-10
2-21
2-22
2-23
CMU 703100
CMU 703100
CMU 703100
CMU 703100
CMU 703100
CMU 703100
3
3
3
3
3
3
2-8
2-9
2-10
2-21
2-22
2-23
N
N
N
Y
Y
Y
27.3
27.3
27.3
27.2
27.2
27.2
8.52
8.52
8.52
8.52
8.52
8.52
27.3
27.3
27.3
27.2
27.2
27.2
22.1
12.3
20.8
21.9
12.6
20.9
39.4
51.7
43.8
39.1
51.1
40.4
0
90
150
0
90
150
4.6
3.8
6.6
4.7
4.0
6.2
14.0
16.5
15.2
13.8
17.2
20.0
14 79 .5
15 78 .5
18 85 .5
14 78 120
11 60 120
13 101 120
Cleared
Cleared
Cleared
Cleared
Cleared
Cleared
2-13
2-15
2-18
2-34
2-35
2-36
CMU 713125
CMU 713125
CMU 713125
CMU 713125
CMU 713125
CMU 713125
3
3
3
3
3
3
2-13
2-15
2-18
2-34
2-35
2-36
N
N
N
Y
Y
Y
27.2
27.2
27.2
27.3
27.3
27.2
8.52
8.52
8.52
8.52
8.52
8.52
27.2
27.2
27.2
27.3
27.3
27.2
21.9
13.0
21.1
22.0
13.2
21.1
39.0
52.4
40.6
39.1
53.7
40.6
0
90
150
0
90
150
5.9
11.4
7.1
6.0
11.6
7.8
18.4
32.7
19.9
18.3
32.6
20.2
9 63 .5
38 224 .5
8 59 .5
9 66 120
57 307 120
8 58 120
Cleared
Cleared
Cleared
Cleared
Cleared
Cleared
2-1
2-3
2-7
2-24
2-25
2-26
CMU 613150
CMU 613150
CMU 613150
CMU 613150
CMU 613150
CMU 613150
3
3
3
3
3
3
2-1
2-3
2-7
2-24
2-25
2-26
N
N
N
Y
Y
Y
27.2
27.2
27.3
27.2
27.2
27.3
8.52
8.52
8.52
8.52
8.52
8.52
27.2
27.2
27.3
27.2
27.2
27.3
22.0
13.0
20.8
22.0
13.0
21.0
39.0
50.5
42.3
52.8
51.0
41.4
0
90
150
0
90
150
5.9
10.6
7.6
5.8
10.6
7.3
18.6
24.2
20.4
29.2
24.4
20.2
12 83 .5
14 82 .5
9 64 .5
72 478 120
14 81 120
10 66 120
Cleared
Cleared
Cleared
Cleared
Cleared
Cleared
2-5
2-6
2-12
2-31
2-32
2-33
CMU 613175
CMU 613175
CMU 613175
CMU 613175
CMU 613175
CMU 613175
3
3
3
3
3
3
2-5
2-6
2-12
2-31
2-32
2-33
N
N
N
Y
Y
Y
27.3
27.3
27.2
27.3
27.3
27.3
8.52
8.52
8.52
8.52
8.52
8.52
27.3
27.3
27.2
27.3
27.3
27.3
22.2
12.4
21.0
22.0
13.0
31.4
39.4
50.8
40.9
39.1
51.1
40.7
0
90
150
0
90
150
6.0
11.0
7.7
6.1
11.4
5.2
14.0 16 87 .5
24.8 15 84 .5
20.2 11.4 79 .5
18.4 15 103 120
24.2 15 82 120
15.3 22.2 115 120
Cleared
Cleared
Cleared
Cleared
Cleared
Cleared
12-1
12-2
12-3
12-4
2-29
2-30
CMU 713200
CMU 713200
CMU 713200
CMU 713200
CMU 713200
CMU 713200
3
3
3
3
3
3
12-1
12-2
12-3
12-4
2-29
2-30
N
N
N
Y
Y
Y
27.2
27.2
27.2
27.2
27.3
27.2
8.52
8.52
8.52
8.52
8.52
8.52
27.2
27.2
27.2
27.2
27.3
27.2
22.3
12.8
17.0
22.2
13.0
21.0
51.2
48.7
47.4
50.1
51.9
54.1
0
90
140
0
90
140
7.6
26.1
10.2
7.6
24.7
10.0
29.4
41.2
30.8
29.4
71.0
30.8
Cleared
Cleared
Cleared
Cleared
Cleared
Cleared
82.8
23.0
73.9
73.9
24
61
421 .5
133 .5
390 .5
413 120
139 120
342 120
E No:
E0503 Rev.01
File Ref: 240-50
CP No.: CP0508 Rev. 01
Page: 8 of 9
Test
#
Fuse
Cat. #
Test Sample Muffler Vapp Ipros Vrec Ipk Varc Closing Melt Clear MW
Series
#
kV
kA
kV kA kV Angle Time Time
msec. msec.
Kj Vrec
Held
sec.
Result
13-5
13-6
13-7
13-8
CMU 703006
CMU 703006
CMU 703006
CMU 703006
4
4
4
4
13-5
13-6
13-7
13-8
N
N
Y
Y
27.2
27.2
27.2
27.2
3.6
3.6
3.6
3.6
27.2
27.2
27.2
27.2
5.20
5.20
5.20
5.20
48.4
48.7
49.3
48.7
90
90
90
90
1.0
0.9
1.0
1.1
24.8 9.0
24.0 5.0
24.9 9.4
24.2 10.8
53
34
54
63
.5
.5
120
120
Cleared
Cleared
Cleared
Cleared
4-1
4-2
13-9
13-10
CMU 713065
CMU 713065
CMU 713065
CMU 713065
4
4
4
4
4-1
4-2
13-9
13-10
N
N
Y
Y
27.1
27.2
27.2
27.2
3.6
3.6
3.6
3.6
27.1
27.2
27.2
27.2
5.59
5.54
5.54
5.54
50.4
53.4
48.9
49.6
90
90
90
90
13.0
12.2
13.6
13.6
33.0 8 38
33.0 17 62
41.4 12.3 76
41.4 14.6 94
.5
.5
120
120
Cleared
Cleared
Cleared
Cleared
4-7
13-11
4-16
13-12
CMU 703100
CMU 703100
CMU 703100
CMU 703100
4
4
4
4
4-7
13-11
4-16
13-12
N
N
Y
Y
27.3
27.3
27.3
27.3
3.6
3.6
3.6
3.6
27.3
27.3
27.3
27.3
5.59
5.22
5.59
5.12
52.2
49.6
53.0
49.3
90
90
90
90
19.6
19.4
19.2
19.4
41.2 9.4 62
40.4 12.1 70
41.2 10.5 82
41.0 8.1 53
.5
.5
120
120
Cleared
Cleared
Cleared
Cleared
4-5
4-6
13-13
13-14
CMU 713125
CMU 713125
CMU 713125
CMU 713125
4
4
4
4
4-5
4-6
13-13
13-14
N
N
Y
Y
27.2
27.2
27.2
27.2
3.6
3.6
3.6
3.6
27.2
27.2
27.2
27.2
5.67
5.62
5.62
5.62
52.0
52.3
49.5
49.8
90
90
90
90
55.6
56.4
56.0
55.8
82.8 7.1 48.4 .5
75.0 4.7 36.2 .5
82.8 11.5 82 120
82.6 17.6 108 120
Cleared
Cleared
Cleared
Cleared
4-9
4-10
4-17
4-18
CMU 613150
CMU 613150
CMU 613150
CMU 613150
4
4
4
4
4-9
4-10
4-17
4-18
N
N
Y
Y
27.2
27.2
27.3
27.3
3.6
3.6
3.6
3.6
27.2
27.2
27.3
27.3
5.59
5.61
5.62
5.56
51.1
52.5
52.2
54.2
90
90
90
90
46.4
46.4
46.0
46.6
66.2 7.9 60 .5
66.4 4.5 41 .5
74.2 14.5 115 120
73.8 15.5 130 120
Cleared
Cleared
Cleared
Cleared
4-11
4-12
4-19
13-15
CMU 613175
CMU 613175
CMU 613175
CMU 613175
4
4
4
4
4-11
4-12
4-19
13-15
N
N
Y
Y
27.2
27.3
27.3
27.3
3.6
3.6
3.6
3.6
27.2
27.3
27.3
27.3
5.59
5.64
5.56
5.56
55.3
51.6
52.4
49.8
90
90
90
90
54.0
53.2
54.0
54.0
82.8 16.5 148 .5
74.2 10.0 81 .5
74.8 9.0 77 120
82.6 11.0 76 120
Cleared
Cleared
Cleared
Cleared
4-13
13-1
13-3
13-4
CMU 713200
CMU 713200
CMU 713200
CMU 713200
4
4
4
4
4-13
13-1
13-3
13-4
N
N
Y
Y
27.3
27.3
27.3
27.3
3.6
3.6
3.6
3.6
27.3
27.3
27.3
27.3
5.56
5.59
5.59
5.59
52.0
49.9
49.4
43.3
90
90
90
90
144
140
142
144
167 12.5 98 .5
282 16.0 109 .5
166 15.4 115 120
158 9.5 69 120
Cleared
Cleared
Cleared
Cleared
3-4
3-5
3-6
3-7
CMU 703006
CMU 703006
CMU 703006
CMU 703006
5
5
5
5
3-4
3-5
3-6
3-7
N
N
Y
Y
27.3
27.2
27.2
27.2
.415
.415
.415
.415
27.3
27.2
27.2
27.2
.659
.669
.676
.676
40.9
43.2
46.9
44.4
90
90
90
90
4.20
4.50
3.60
3.80
50
41.4
57.8
50.4
.033
.5
120
120
Cleared
Cleared
Cleared
Cleared
5-1
5-2
5-3
5-4
CMU 703006
CMU 703006
CMU 703006
CMU 703006
6
6
6
6
5-1
5-2
5-3
5-4
N
N
Y
Y
27.3
27.3
27.3
27.2
20.0
20.0
20.0
20.0
27.3
27.3
27.3
27.2
-
39.1
39.1
38.7
38.6
90
90
90
90
2230
2080
1920
2700
2330
2240
2170
2880
.5
.5
120
120
Cleared
Cleared
Cleared
Cleared
E No:
E0503 Rev.01
CP No.: CP0508 Rev. 01
File Ref: 240-50
Page: 9 of 9
Conclusions
The above is a true and correct summary of data obtained from tests performed by:
Powertech High Power Laboratory in Surrey, British Columbia, Canada from November 29 to
December 2, 1999, and April 3, 2000. The tests demonstrate the capability of Cooper Power
Systems type CMU Power Fuses to safely interrupt circuits when applied within their assigned
ratings.
The fuses tested during this test sequence met the requirements of the referenced standards.
Quality from
Cooper Industries
P.O. Box 1640, Waukesha, WI 53187