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3.2
Installation of power factor improving reactor
When the inverter is connected near a large-capacity power transformer (500kVA or more) or when a power capacitor is to be
switched over, an excessive peak current may flow in the power input circuit, damaging the converter circuit. To prevent this,
always install an optional reactor (FR-HAL, FR-HEL).
Three-phase power input
AC reactor
(FR-HAL)
MCCB
MC
R
S
Power supply
T
Single-phase power input
AC reactor
(FR-HAL)
MCCB
MC
R
Power supply
S
T
∗ When connecting the FR-HEL, remove the jumper across terminals P/+ and P1.
The wiring length between the FR-HEL and inverter should be 5m (16.4feet) maximum and minimized.
REMARKS
Use the same wire size as that of the power supply wire (R/L1, S/L2, T/L3). (Refer to page 17)
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Installation of power factor improving reactor
Inverter
1500
X
R/L1
U
Y
1000
S/L2
V
IM
Z
T/L3
W
500
P/+
P1
DC reactor
(FR-HEL) *
Inverter
X
R/L1
U
Y
S/L2
V
IM
Z
W
P/+
P1
DC reactor
(FR-HEL) *
Range requiring
installation of
the reactor
0
10
(m)
Wiring length
(32.8feet)
3
43
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