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Installation of a reactor
3.2 Installation of a reactor
When the inverter is connected near a large-capacity power transformer (1000kVA 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 the optional AC reactor.
MCCB
Power
supply
* When connecting the DC reactor to the FR-A760-00840 or less, remove the jumper across terminals P/+ - P1.
For the FR-A760-01040 or more, a DC reactor is supplied. Always install the reactor.
When using the FR-A760-00840 with LD or SLD set, always use a DC reactor.
REMARKS
The wiring length between the DC reactor and inverter should be 5m (16.4feet) maximum and minimized. Use the same wire size
as that of the power supply wire (R/L1, S/L2, T/L3). (Refer to page 21)
46
Inverter
AC reactor
MC
R
X
R/L1
U
S
Y
S/L2
V
T
Z
T/L3
W
P/+
P1
DC reactor *
(kVA)
5300
5000
Capacities requiring
installation of
4000
IM
AC reactor
3000
2000
1000
110165 247 330 420
550 kVA
Inverter capacity
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