Appendix A
A–7
Derating Guidelines
Drive ratings can be affected by a number of factors. If more than one
factor exists, consult Allen–Bradley Co.
Standard Rating for Enclosed Drive in 40°C Ambient & Open Drive in 50°C Ambient
Derating Factor for Enclosed Drive in Ambient between 41°C & 50°C.
Figure 2
1336T–A015 and B030
75%
80%
70%
85%
90%
% of Drive
Rated Amps
95%
100%
65%
60%
50%
55%
Carrier Frequency in kHz
4 52 31 6 8
10
11
9
7
12
Figure 3
1336T–A020 and B040
75%
80%
70%
85%
90%
% of Drive
Rated Amps
95%
100%
60%
65%
Carrier Frequency in kHz
4 52 31 6 8
10
11
9
7
12
Figure 4
1336T–A025, B050 and BX060
75%
80%
70%
85%
90%
% of Drive
Rated Amps
95%
100%
65%
60%
55%
45%
50%
4 52 31 6 8
10
11
9
7
12
Carrier Frequency in kHz
Figure 1
1336T–A010 and B020
65%
75%
80%
70%
85%
90%
% of Drive
Rated Amps
95%
100%
Carrier Frequency in kHz
4 52 31 6 8
10
11
9
7
12
To Next Page
Loading...
