Appendix B Accessories
VFD-EL-W
B-4
B.2.2 Zero Phase Reactor
RF220X00A
UNIT: mm [inch]
Cable
type
(Note)
Recommended Wire Size
Qty.
Wiring
Method
Diagram A
Please wind each wire four times around the core. The
reactor must be put as close to the inverter output as
possible.
Power
Supply
U/T1
V/T2
W/T3
R/L1
S/L2
T/L3
AWG
mm
2
Nominal
(mm
2
)
Single-
core
≤ 10
≤ 5.3
≤ 5.5 1 Diagram A
≤ 2 ≤ 33.6
≤ 38 4 Diagram B
Three-
core
≤ 12
≤ 3.3
≤ 3.5 1 Diagram A
≤ 1 ≤ 42.4
≤ 50 4 Diagram B
600V Insulated Unshielded Cable
1. The table above gives approximate wire size for
zero phase reactors, but the selection is ultimately
governed by the type and diameter of the cable;
that is,
the cable must fit through the center hole of
zero phase reactors.
2. When wiring, do not pass the grounding cable
through the zero phase reactor; only pass the
motor wire or power cable through the zero phase
reactor.
3. With longer motor cables the zero-phase reactor
can effectively reduce interference at the motor
output.
Diagram B
Please put all wires through four cores in series without
winding.
U/T1
V/T2
W/T3
R/L1
S/L2
T/L3
Power
Supply
MOTOR
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