Bosch rexroth EFC 610 Series Operating Instructions Manual page 105

Rexroth Frequency Converter EFC x610
Series
Use a diode to ensure the current is always in the direction of flowing-in the
●
frequency converter.
DC-bus fuse specification
The fuse rating depends on the fuse type (gG) and the temporary overload capa-
bility of the frequency converter.
If no overload happens in an application, the fuses can be selected
directly according to the power rating of the frequency converter.
Recommended fuse ratings at DC-bus voltage of 513 V are shown in the table
below.
Model Motor power [kW]
5K50 5.5
7K50 7.5
11K0 11.0
15K0 15.0
18K5 18.5
22K0 22.0
30K0 30.0
37K0 37.0
45K0 45.0
55K0 55.0
75K0 75.0
90K0 90.0
110K 110.0
132K 132.0
160K 160.0
Tab. 8-10: Recommended fuse ratings
I = P / (V x η
DC Motor DC
V = 1.35 x V
DC in
V is the RMS value of the AC input voltage.
in
For example, if V
DC
The recommended fuse rated current is calculated based on the selected motor.
In actual application, please check the value according to the equation above
and the actual motor efficiency.
Motor efficiency
85.8 %
87.1 %
88.5 %
89.5 %
90.1 %
90.6 %
91.5 %
92.1 %
92.6%
93.1%
93.7%
94.0%
94.6%
94.8%
94.8%
)
Motor
= 513 V, the equivalent V
Frequency Converter Wiring
DC-current [A]
12.5
16.8
24.2
32.7
40.0
52.7
71.1
87.1
94.7
115.2
156.0
186.6
226.7
271.4
353.0
= 380 V.
in
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gG fuses [A]
16
25
35
50
50
63
80
100
125
125
200
200
250
300
400