Power Connections; Input Connections - WEG CF W100 Serie Manual Del Usuario

Installation and Connection
ATTENTION!
Residual differential interrupter (DR):
When used in the inverter supply, it must have a pick-up current of 300 mA.
„
Depending on the installation conditions, such as motor cable length and type, multi-motor drive,
„
etc., the DR interrupter may trip. Check with the manufacturer the most suitable type for operation
with inverters.
NOTE!
The wire gauges listed in
maximum permitted voltage drop must be considered for the proper wiring sizing.

3.2.3 Power Connections

3.2.3.1 Input Connections

DANGER!
Provide a disconnect device for the inverter power supply. This device must cut off the power supply
whenever necessary (during maintenance for instance).
ATTENTION!
The power supply that feeds the inverter must have a grounded neutral.
The CFW100 series inverter must not be used in IT networks (neutral is not grounded or grounding
provided by a high ohm value resistor) or in grounded delta networks ("delta corner grounded"),
because these type of networks damage the inverter.
14 | CFW100 G2
Table B.1 on page 91
Fuse
Disconnecting
switch
L1 L2 PE
U V W PE
Shield
Figure 3.1: Power and grounding connections
are guiding values. Installation conditions and the
Power supply
L1/L
L2/N
PE
PE W V U