WEG CFW500 - Power and Grounding Wiring, Circuit Breakers and Fuses

16 | CFW500
Installation and Connection
English
3.2.2 Power and Grounding Wiring, Circuit Breakers and Fuses
ATTENTION!
 Use proper cable lugs for the power and grounding connection cables. Refer
to Table B.1 on page 157, Table B.2 on page 159 and Table B.3 on page
160 for recommended wiring, circuit breakers and fuses.
 Keep sensitive equipment and wiring at a minimum distance of 0.25 m from the
inverter and from the cables connecting the inverter to the motor.
 It is not recommended the use of mini circuit breakers (MDU), because of
the actuation level of the magnet.
ATTENTION!
Residual Current Device (RCD):
 When used in the inverter supply, it must have a pick-up current of 300 mA.
 Depending on the installation (motor cable length, cable type, multimotor
configuration, etc.), the RCD protection may be activated. Contact the RCD
manufacturer for selecting the most appropriate device to be used with
inverters.
NOTE!
 The wire gauges listed in Table B.1 on page 157 and Table B.2 on page 159
are orientative values. Installation conditions and the maximum permitted
voltage drop must be considered for the proper wiring sizing.
 In order to meet UL requirements, use ultra fast (for frame sizes A, B and C),
and use fuse type J or circuit breaker (for frame sizes D, E and F) fuses at
the inverter supply with a current not higher than the values presented in
Table B.3 on page 160.