Owner's manual

A–5Specifications and Supplemental Information
Drive ratings can be affected by a number of factors. If more than
one factor exists, derating percentages must be multiplied. For
example, if a 42 Amp drive (B025) running at 8 kHz is installed at a
2,000 m (6,600 ft.) altitude and has a 2% high input line voltage, the
actual amp rating will be:
42 x 94% Altitude Derate x 96% High Line Derate = 37.9 Amps.
AMBIENT TEMPERATURE / CARRIER FREQUENCY
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.
% of Drive
Rated Amps
Figure B
1336S-A010 and B020
Carrier Frequency in kHz
42 6 8
92%
98%
94%
90%
96%
100%
Figure C
1336S-B025
Carrier Frequency in kHz
42 6 8
84%
96%
88%
80%
92%
100%
% of Drive
Rated Amps
Figure D
1336S-A015 and B030
Carrier Frequency in kHz
42 6
8
70%
85%
90%
95%
75%
65%
80%
100%
% of Drive
Rated Amps
Figure E
1336S-B040 and BX040
Carrier Frequency in kHz
2 4 6
88%
90%
98%
92%
94%
86%
96%
100%
% of Drive
Rated Amps
Carrier Frequency in kHz
62 4 108
92%
98%
94%
90%
96%
100%
% of Drive
Rated Amps
Figure A
AQF05-AQF50 and BRF05-BRF100
Derating Guidelines