Grounding Connections - WEG CFW-11 Guide Rapide D'installation

PRT1 board
(a) Location of board
(b) Initial position
Figure 20 (a) to (c): Frame size E grounding connections – location and
procedure to adapt to the IT or delta-grounded networks - move ground
RFI filter for NC (not connected)
Remove
(a) Initial position
Figure 21 (a) and (b): Frame sizes F and G grounding connections
– location and procedure to adapt to the IT or delta-grounded
networks - move ground RFI filter for NC (not connected)
Remove
(a) Initial position
(c) Final position (IT)
Figure 22 (a) to (c): Frame size H grounding connections - location and
procedure to adapt to the IT or delta-grounded networks - move ground
RFI filter for NC (not connected)
(c) Final position (IT)
Connect
(b) Final position (IT)
Connect
(b) Final position (IT)
Connect

GROUNDING CONNECTIONS

DANGER!
The inverter ground must be connected to a protective
ground (PE).
Refer to local regulations and/or electrical codes for
selecting grounding wire gauge.
Connect the inverter grounding connections to a
ground bus bar, to a single ground point, or to a
common grounding point (impedance ≤ 10 Ω).
To comply with IEC 61800-5-1 standard, connect the
inverter to the ground by using a single conductor
copper cable with a minimum wire gauge of 10 mm
since the leakage current is greater than 3.5 mAac.
ATTENTION!
The neutral conductor of the mains supply must be
solidly grounded. However, this conductor must not
be used to ground the inverter.
CFW-11 nº1 CFW-11 nº2 CFW-11 nºN
Internal cabinet
ground bus bar
Figure 23: Grounding connections with multiple inverters
Installation Guide
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2
CFW-11 nº1 CFW-11 nº2
CFW-11 | 13