WEG UR11 Series, User Manual

Page: 33 / 57

Installation and Connection
3
3-16 | UR11
220 V input connector
Figure 3.16 - Fans supply terminals: 220 V / 4 A
3.4.6.3 Grounding Connections
ATTENTION!
The neutral conductor of the network must be solidly grounded; however, this conductor must not
be used to ground the rectifier.
ATTENTION!
The rectifier must be obligatorily connected to a protective ground (PE).
Use cables with the recommended gauge indicated in the Table 3.7 on page 3-16 . Local standards
should be followed in case different gauges are requested.
The rectifier grounding connection must be connected to the protective ground (PE).
The fastening of the UR11 ground cable connections is done with M12 x 30 bolts (tightening torque: 60 N.m.),
as presented at
Figure 3.17 on page 3-17 .
Table 3.7 - Grounding cables
Current (A) Voltage (V) Overload
Minimum Cable
Cross-section
Area (mm
2
)
600 380 / 480 ND 240
515 HD 185
470 500 / 600 ND 150
418 HD 120
427 660 / 690 ND 120
340 HD 70