CS300
——————— Half controlled power supply for inverter DC-Link ————————
15
2.6.2 Drive DC Current (DC Link Circuit)
Rated motor
Motor
Current
Current
Fuses
power
efficiency
Dclink I
DCL
DClink I
DCL
DClink
P
Mot
Mot
Continuous class 1 Overload class 2
Superfast
class 1
class 2
[kW]
[A]
[A]
[A]
0,55
0,71
1,56
2,12
6
4003
4003
0,75
0,74
2,04
2,77
6
4003
4003
1,1
0,75
2,95
4,01
6
4003
4003
1,5
0,75
4,02
5,47
8
4003
4003
2,2
0,79
5,60
7,61
10
4003
4003
3
0,81
7,44
10,12
16
4003
4003
4
0,83
9,68
13,17
16
4005
4005
5,5
0,84
13,16
17,90
20
4005
4007
7,5
0,86
17,53
23,83
30
4007
4011
11
0,88
25,12
34,16
40
4011
4015
15
0,89
33,87
46,06
63
4015
4022
18,5
0,905
41,08
55,87
63
4022
4022
22
0,912
48,48
65,93
80
4022
4030
30
0,918
65,67
89,32
100
4030
4037
37
0,923
80,56
109,56
125
4037
4045
45
0,93
97,24
132,25
160
4045
4055
55
0,935
118,21
160,77
200
4055
4075
75
0,943
159,83
217,37
250
4075
4090
90
0,946
191,19
260,02
315
4090
4110
110
0,947
233,43
317,46
350
4110
4132
132
0,951
278,94
379,35
450
4132
4160
160
0,955
336,69
457,90
500
4160
4250
200
0,958
419,54
570,58
630
4250
4250
250
0,96
523,33
711,74
800
4250
4315
315
0,963
657,35
893,99
1000
4315
355
0,963
740,82
1007,52
400
0,965
833,00
1132,88
cs070
AV300 -…
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).
The current value in column 1 is calculated as
I
DCL
= P
Mot
/ (h
Mot
x h
I
x U
LN
x 1.35)
where for column „Current Dclink I
DCL
Overload class 2“ it is obtained multiplying by 1.36.
