3 Installation
3.3 Assembly
DB1 variable frequency drive
11/20 MN040031EN
Eaton.com
54
Table 9:
Temperature at the cooling surface, thermal resistance, efficiency
Device type
Switching
frequency
Permissible
temperature
T
cp
at the
cooling
surface
Maximum
thermal resis-
tance
efficiency
kHz
°C
K / W
%
DB1-1D3D2FN-N2CC
4
95
1.76
96.60
8
90
1.39
96.17
12
85
1.88
97.52
16
80
1.58
97.47
24
70
0.88
96.21
32
65
0.57
95.35
DB1-1M4D3FN-N2CC-PFC
4
95
0.93
95.00
8
90
0.78
94.70
12
85
0.65
94.40
16
80
0.53
94.10
24
70
0.39
93.40
32
65
0.26
92.00
DB1-122D3FN-N2CC
4
95
2.5
96.00
8
90
2.2
95.90
12
85
1.9
95.90
16
80
1.6
95.70
24
70
1.3
95.70
32
65
1.0
95.60
DB1-124D3FN-N2CC
4
95
1.2
96.00
8
90
1.0
95.90
12
85
0.9
95.90
16
80
0.7
95.70
24
70
0.6
95.70
32
65
0.5
95.60
DB1-127D0FN-N2CC
4
95
0.5
95.00
8
90
0.4
94.70
12
85
0.3
94.40
16
80
0.3.
94.10
24
70
0.2
93.40
DB1-127D0FN-N2CC-PFC
4
95
0.42
95.00
8
90
0.36
94.70
12
85
0.30
94.40
16
80
0.25
94.10
24
70
0.20
93.40
32
65
0.14
92.00