3-phase, 4-wire, wye (480Y/277V), so that the phase-to-ground rated system voltage is limited to 300V
maximum.
12
. Install UL certified fuses or circuit breaker between the power supply and the inverter, referring to the table
below.
Power supply voltage
Nominal applied motor(kW)[HP]
Inverter type
HHD/HD/HND/ND mode
Class J or Class CC
fuse size (A) *4
Circuit breaker trip size (A) *5
Required torque
lb-in (N・m)
Wire size AWG (mm
2
)
Main terminal
Inverter’s grounding
Aux. control power supply
Aux. Fan power supply
Main terminal Cu Wire
G
Aux. control power supply
Aux. fan power supply
L1/R,L2/S,L3/T U, V, W
60°C Cu wire
75°C Cu wire
Remarks
60°C Cu wire
75°C Cu wire
Remarks
Inverter’s
grounding
Three-phase 200V
0.1
[1/8]
Note: A box (■) in the above table replaces S (Basic type) or E (EMC filter built-in type) depending on the
enclosure.
A box () in the above table replaces GA, GB or C depending on the model.