WEG UR11 Series, User Manual

Page: 24 / 57

Installation and Connection
3
UR11 | 3-7
Braided wire gauge: AWG-40 (0.08 mm)
[0.787]
40
[1.575]
80 [3.15]
40 [1.575]
14 [7x]
(0.551[7x])
8.5±1
[0.335±0.039]
310±3
[12.2±0.118]
20
[0.787]
20
50
[1.97]
25
[0.984]
15
[0.59]
[0.984]
25
[0.984]
[0.984]
25
25
80 [3.15]
80 [3.15] 180 [7.086]
50
Note: dimensions in mm (in)
Figure 3.7 - Example of flat braided cable
The cable length represented by "A" must be sized according to the distance between the UR11 and the panel
DC bus (copper bus), as presented at
Figure 3.13 on page 3-13 .
ATTENTION!
The braided cable presented at Figure 3.7 on page 3-7 , used by WEG, was designed to withstand
half the UR11 output DC current (see UR11 specifications at Table 7.1 on page 7-2 ). Therefore,
two parallel braided cables are necessary for each connection (+UD and -UD). It is necessary to
consult the braided cable manufacturer for proper sizing in case it is desired to use only one braided
cable per connection.
3.4.3 Fuses
ATTENTION!
It is necessary to use individual fuses at the input of each UR11 diode bridge for the proper protection
of the rectifier units.
The fuses should be connect according to the Figure 3.8 on page 3-8 and sized to protect and withstand the
individual current of each individual module of the rectifier bridge.