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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
MCCB
Power supply
Single-phase power input
MCCB
Power supply
∗ 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 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)
Installation of power factor improving reactor
AC reactor
Inverter
(FR-HAL)
MC
R
X
R/L1
U
S
Y
S/L2
V
T
Z
T/L3
W
P/+
P1
DC reactor
(FR-HEL) *
AC reactor
Inverter
(FR-HAL)
MC
R
X
R/L1
U
S
Y
S/L2
V
T
Z
W
P/+
P1
DC reactor
(FR-HEL) *
1500
Range requiring
installation of
1000
IM
the reactor
500
0
Wiring length
IM
(m)
10
3
39
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