WEG MVW3000 A0040 V023, User Manual

Page: 51 / 125

MVW3000 | 6-11
6
Installation, Connection and Energization
Shield
Inverter
PE V W U U V W PE PE
MV Input
MVW3000
Figure 6.8: Power and ground connections
Table 6.5 on page 6-11 contains the minimum insulation voltages of the inverter power cables.
Table 6.5: Minimum insulation voltage of the power cables
Rated Voltage [kV] Minimum Insulation Voltage [kV]
2.3 3.6/6
3.3, 4.16 and 5.5 6/10
6.3, 6.9, 7.2 and 8.0 8.7/15
10 and 11 12/20
13.2 and 13.8 15/25
Commercial examples:
Belden: 37540.
Cofiban: Cofialt 7 kV (without shield).
Pirelli: Eprotenax 6/10 kV.
Ficap: Fibep or EPDry 6/10 kV.
Use proper connectors for the power connections and the shield connections to the grounding bar.
Tighten the connections with the appropriate torque.
Table 6.6: Power connections cable lugs and tightening torque
Terminal Torque [Nm] ±20 %
M8 15
M10 30
M12 60
DANGER!
It is mandatory to connect the inverter to a protection ground (PE). The grounding connection must
follow the local regulations. Use at least conductors with the wire gauge indicated in the
Table 6.4
on page 6-10 . Connect the inverter to a specific grounding rod or to the general ground system
(resistance ≤ 10 Ohms).