R-Rated Medium Voltage Fuses
For Motor Circuits
Peak Let-Through Current Curve (5.5kV and 2.75kV Fuses)
100
48
40
36
30
24
18
12
9
6
4
3
2
10
1
.1
PROSPECTIVE CURRENT (SYM. RMS kA)
Motor Efficiency ---------- 90%
Motor Power Factor ----- 0.9
Starting Current ---------- 6 x FLA Min. Fuse Size---- 1.3 x FLA
Starts/Hour ---------------- Max of 2/Hour
Run Up Time------ 10 Secs.
Starting Method -- Full Voltage
Application for HV Motor Circuit Fuses
The following table is a general guide only based on a
number of assumptions regarding the motor duty
application which are listed below. Contact Edison
Customer Satisfaction for specific application information.
The application tables are based on the following
assumptions:
2.4kV
4.16kV
FUSE
“R”
–
–
2R
2R
3R
3R
4R
4R
4R
6R
9R
9R
9R
12R
18R
18R
18R
18R
18R
24R
24R
24R
30R
30R
36R
36R
36R
40R
–
4.8kV
FUSE
“R”
–
–
–
2R
2R
3R
3R
4R
4R
6R
6R
9R
9R
9R
12R
12R
18R
18R
18R
18R
18R
24R
24R
24R
30R
30R
36R
36R
40R
48R
FLA
Amps
17
FUSE
“R”
2R
2R
3R
3R
4R
6R
6R
9R
9R
12R
18R
18R
18R
18R
24
24R
24R
30R
36R
40R
40R
40R
48R
–
FLA
Amps
–
–
16
19
26
32
38
45
45
64
77
FLA
Amps
–
–
–
17
22
28
33
39
44
55
67
78
89
100
111
122
133
155
177
200
211
222
244
266
288
311
333
388
444
500
Hp
75
Amps
70
70
Amps
–
–
70
70
Amps
–
100
22
–
125
28
70
–
150
33
100
130
170
170
170
200
230
390
390
390
390
450
450
450
450
500
600
600
600
650
–
70
200
44
100
100
130
130
130
170
200
200
230
230
390
390
390
390
390
450
450
450
450
450
500
500
500
600
–
70
250
300
350
400
500
600
700
800
55
67
78
89
100
100
130
130
170
170
200
200
200
230
230
390
390
390
390
390
450
450
450
450
450
500
500
600
650
111
133
155
177
200
222
244
266
311
355
399
422
444
488
–
90
102
115
128
141
154
179
205
230
243
256
282
307
333
358
384
448
–
900
1000
1100
1200
1400
1600
1800
1900
2000
2200
2400
2600
2800
3000
3500
4000
4500
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Contact Edison Customer Satisfaction for applications regarding other operating conditions.
For additional information, visit www.edisonfuse.com
104