Power Connections; Input Connections - WEG CFW700 Serie Manual Del Usuario

3.2.3 Power Connections

PE
R
S
T
Power Disconnect
Supply Switch
Figure 3.2: Power and grounding connections

3.2.3.1 Input Connections

DANGER!
Provide a disconnect device for the input power supply of the inverter.
This device shall disconnect the input power supply for the inverter when needed
(for instance, during servicing).
ATTENTION!
The power supply that feeds the inverter shall have a solid grounded neutral.
In case of IT networks, follow the instructions described below.
ATTENTION!
In order to be able to use the CFW700 with built-in RFI filter (sizes A, B, C and
D with optional RFI filter and all size E inverter models – CFW700...C3...) in IT
networks (neutral conductor not grounded or grounded via a high ohmic value
resistor) or in corner-grounded delta systems, it is necessary to remove some
RFI filter components (capacitor for sizes A, B, C and D and capacitor and the
MOV for size E) connected to the ground by removing the screws indicated in
figure A.6 (a) for inverter sizes A, B, C and D and changing the position of the J1
jumper on the PRT1 board from
A.6 (b) for inverter size E.
PE R S T U V W PE
Fuses
(XE1) to "NC" (XIT), according to the figure
- English -
Installation and Connection
PE W V U
Shielding
CFW700 | 17