
20 | DBW03
Installation and Connection
E
ng
lis
h
Braking
resistor
BR
+UD
Figure 3.4:
Connections of the grounding and braking resistor
Use cables with the gauge indicated in table 3.1 to connect the DBW03 braking module.
Table 3.1:
Connecting cables of the DBW03
Line
(V)
Current
(A)
Minimum Section
of the Resistor
Cables
[mm
2
(AWG)]
Minimum Section
of the Cables for
+UD and –UD
[mm
2
(AWG)]
Minimum Section
of the Grounding
Cable
[mm
2
(AWG)]
380-480
380
240 (2 x 4/0)
240 (2 x 4/0)
120 (4/0)
500-690
250
120 (4/0)
120 (4/0)
70 (2/0)
It is recommended to use fuses when the braking module is connected to a DC
link with more than one inverter. Two fuses must be installed, one for the +UD and
another for the –UD. The current of each fuse must be 630 Arms with i
2
t maximum
of 1,440,000 A
2
s.
They must have an interruption capacity for direct voltage of 800 Vdc for the line
380...480 V, 1000 Vdc for the line 500...600 V and 1200 Vdc for the line 660...690 Vdc.
Содержание DBW03 Series
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