WEG DBW03 Serie Manual Del Usuario página 20

Installation and Connection
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.
Line Current
(V) (A)
380-480 380
500-690 250
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
of 1,440,000 A s.
2
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.
20 | DBW03
+UD
Braking
resistor
Table 3.1: Connecting cables of the DBW03
Minimum Section
of the Resistor
Cables
[mm (AWG)]
2
240 (2 x 4/0)
120 (4/0)
BR
Minimum Section Minimum Section
of the Cables for of the Grounding
+UD and –UD
[mm (AWG)]
2
240 (2 x 4/0)
120 (4/0)
Cable
[mm (AWG)]
2
120 (4/0)
70 (2/0)
t maximum
2