80
Sigmatek FDD Sizes 7 to 9 Power Installation Guide
5.1.2 Power and current ratings (Derating for switching frequency and
temperature)
Table 5-2 Maximum permissible continuous output current @ 40 °C (104 °F) ambient
*The 0.667 and 1 kHz value is the same as the 2 kHz value.
Table 5-3 Maximum permissible continuous output current @ 50 °C (122 °F)
*The 0.667 and 1 kHz value is the same as the 2 kHz value.
Model
Normal Duty
Heavy Duty
Nominal
rating
Maximum permissible continuous
output current (A) for the following
switching frequencies
Nominal
rating
Maximum permissible continuous
output current (A) for the following
switching frequencies
kW
hp
2
kHz*
3
kHz
4
kHz
6
kHz
8
kHz
12
kHz
16
kHz
kW
hp
2
kHz*
3
kHz
4
kHz
6
kHz
8
kHz
12
kHz
16
kHz
400 V
074.00660
37
60
79
63
53.6
30
50
66
57
48
41
34
074.00770
45
60
94
80.6
63
53.6
37
60
77
70
59
51
44
37
074.01000
55
75
112
95.2 80.6
63
53.8
45
75
100
88
73
61
48
41
084.01340
75
100
155
132
98
77
55
100
134
130
109
91
72
57
084.01570
90
150
184
169 142 106.7
77
75
125
157
143
121 104 80.1
65
094.02000 110 150
221
192 159
108
77
90
150
200
180
157 130
92
65
094.02240 132 200 266 255 231 192 160
109
77
110 150
224
211
190
157 130
92
65
Model
Normal Duty
Heavy Duty
Maximum permissible continuous output
current (A) for the following
switching frequencies
Maximum permissible continuous output
current (A) for the following
switching frequencies
2
kHz*
3
kHz
4
kHz
6
kHz
8
kHz
12
kHz
16
kHz
2
kHz*
3
kHz
4
kHz
6
kHz
8
kHz
12
kHz
16
kHz
400 V
074.00660
79
73.5
57.7
49
66
55
45
38
30
074.00770
94
86.5
73.3
58.3
49
77
70
57
48
41
34
074.01000
112
109
87.4
72.8
58.3
49.3
100
91
80
65
55
44
37
084.01340
155
146
123
93
69
134
120
99
85
69
55
084.01570
184
180
146
123
93.8
69
157
146
132
110
94.2
73.8
58
094.02000
221
213
175
144
97
69
200
180
174
143
119
83
58
094.02240
253
237
213
176
144
98
69
213
193
175
143
119
83
58
55
°
C ratings are available on request
NOTE
Summary of Contents for 074.00660
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Page 97: ......
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