User Manual - Firmware 1.xxx-6.xxx Instruction Manual

Specifications and Supplemental Information A–5
Derating Guidelines 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
Figure/Rating Derate Figure/Rating Derate
Figure A
AQF05-75
BRF05-200
Figure B
A010
B020
Figure C
B025
Figure D
A015
B030
Figure E
B040
BX040
Figure F
B050
BX060
Figure G
A040
B075
C075
Figure H
A050
B100
Figure I
C100
Figure J
A060
B125
BX150
Carrier Frequency in kHz
62 4 108
92%
98%
94%
90%
96%
100%
% of Drive
Rated Amps
% of Drive
Rated Amps
Carrier Frequency in kHz
42 6 8
92%
98%
94%
90%
96%
100%
Carrier Frequency in kHz
42 6 8
84%
96%
88%
80%
92%
100%
% of Drive
Rated Amps
Carrier Frequency in kHz
42 6
8
70%
85%
90%
95%
75%
65%
80%
100%
% of Drive
Rated Amps
Carrier Frequency in kHz
2 4 6
88%
90%
98%
92%
94%
86%
96%
100%
% of Drive
Rated Amps
Carrier Frequency in kHz
2 4 6
70%
85%
90%
95%
75%
65%
80%
100%
% of Drive
Rated Amps
Carrier Frequency in kHz
2 4 6
% of Drive
Rated Amps
92%
98%
94%
90%
96%
100%
Carrier Frequency in kHz
2 4 6
70%
85%
90%
95%
75%
65%
80%
100%
% of Drive
Rated Amps
Carrier Frequency in kHz
2 4 6
% of Drive
Rated Amps
92%
98%
94%
90%
96%
100%
Carrier Frequency in kHz
2 4 6
70%
85%
90%
95%
75%
65%
80%
100%
% of Drive
Rated Amps
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.