Power Connections; Input Connections - WEG CFW701 Manual Del Usuario

Installation and Connection
In order to meet UL requirements, use class J fuses at the inverter supply with a current not
„
higher than the values presented in
Table B.3 on page 150
Optionally, slow blow fuses can be used at the input. They shall be sized for 1.2 x the rated
„
input current of the inverter. In this case, the installation is protected against short-circuit, but
not the inverter input rectifier. This may result in major damage to the inverter in the event of
an internal component failure.

3.2.3 Power Connections

PE
R
S
T
Power
Disconnect
supply
switch
The switch-disconnector is not necessary if the inverter has the DS optional item (with
„
switch-disconnector).

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).
DANGER!
Montez un dispositif de coupure sur l'alimentation du variateur.
Ce composant déconnecte l'alimentation du variateur si cela est nécessaire
(ex. pendant l'entretien et la maintenance).
14 | CFW701
Table B.1 on page
.
PE R S T U V W PE
Fuses
Figure 3.2: Power and grounding connections
148, Table B.2 on page 149
PE W V
Shielding
and
U