WEG CFW-09 - Power Connections; AC Input Connection

57
CHAPTER 3 - INSTALLATIONANDCONNECTION
Figure 3.9
- Power/grounding connections
Fuses
Power
Supply
Shielding
PE
Disconnect
R
S
T
PE
R S T
U V W
PE
PE W V U
3.2.5
Power Connections
DANGER!
Provide an AC input disconnecting switch to switch OFF input power to the
inverter.
This device shall disconnect the inverter from theAC input supply when required
(e.g. during maintenance services). However it cannot be usedas an emergency
stop device.
ATTENTION!
Theneutralconductor of theACinputfor the inverter mustbephysicallygrounded,
but do not use it for grounding purpose of the inverter(s).
ATTENTION!
Acontactor or another device that frequently disconnects and reapplies theAC
supply to the inverter in order to start and stop the motor may cause damage to
the inverter power section. The driveis designedto usecontrol signals for starting
and stopping the motor. If used, the input device must not exceed one operation
every6 minutes otherwise the inverter may be damaged.
ATTENTION!
Set jumper to selectthe rated line voltage380-480 V, for inverters 86Aor
higher.
Refer to item 3.2.3.
NOTE!
TheAC input voltage must be compatible with the inverter rated voltage.
Supply line capacity
:
The CFW-09is suitable for use in circuits capable of supplying not more than
30.000A (rms) symmetrical (230 V/480 V/600 V/690 V).
TheCFW-09canbeinstalledonpowersupplieswithahigherfaultlevelprovided
that adequate protection is provided by the fuses or circuit breaker.
DC Link Inductor/Line Reactor
Refer to
item 8.7 relating to the requirement for using the LineReactor / DC Link
Inductor.
NOTE!
Capacitors for power factor correction are not required at the input (R, S,
T) and
they MUST not be connected at the output (U, V, W).
3.2.5.1
ACInput
Connection