—————— SM 32 ——————
36-GB
2.6.2. Drive DC Current (DC Link Circuit)
The following table states the direct current values of the dc-link according to the rated
power of the motor connected to the inverter the current is calculated on the basis of the
following:
- 4-pole “standard” motor
- “typical” efficiency for “standard” motors (η
Mot
)
- the “typical” inverter efficiency is considered equal to 0.97 (η
I
)
- mains power supply voltage 3 x 380V (conservative value if referred to a rated voltage
of 3 x 400V)
- there are two value columns referring to a continuous functioning (class 1) or to a
functioning during an overload phase (class 2) (150% for 60 seconds).
Rated motor
power
P
Mot
[kW]
0,55
0,75
1,1
1,5
2,2
3
4
5,5
7,5
11
15
18,5
22
30
37
45
55
75
90
110
132
160
200
250
315
355
400
Motor
efficiency
ηη
ηη
η
Mot
0,71
0,74
0,75
0,75
0,79
0,81
0,83
0,84
0,86
0,88
0,89
0,905
0,912
0,918
0,923
0,93
0,935
0,943
0,946
0,947
0,951
0,955
0,958
0,96
0,963
0,963
0,965
Current Dclink I
DCL
Continuous class 1
[A]
1,56
2,04
2,95
4,02
5,60
7,44
9,68
13,16
17,53
25,12
33,87
41,08
48,48
65,67
80,56
97,24
118,21
159,83
191,19
233,43
278,94
336,69
419,54
523,33
657,35
740,82
833,00
Current DClink I
DCL
Overload class 2
[A]
2,12
2,77
4,01
5,47
7,61
10,12
13,17
17,90
23,83
34,16
46,06
55,87
65,93
89,32
109,56
132,25
160,77
217,37
260,02
317,46
379,35
457,90
570,58
711,74
893,99
1007,52
1132,88
Fuses DClink
Superfast (*)
[A]
6
6
6
8
10
16
16
20
30
40
63
63
80
100
125
160
200
250
315
350
450
500
630
800
1000
AVy-…
class 1 class 2
4003 4003
4003 4003
4003 4003
4003 4003
4003 4003
4003 4003
4005 4005
4005 4007
4007 4011
4011 4015
4015 4022
4022 4022
4022 4030
4030 4037
4037 4045
4045 4055
4055 4075
4075 4090
4090 4110
4110 4132
4132 4160
4160 4250
4250 4250
4250 4315
4315
(*) The DC link fuses are not included in the converter.