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Main circuit terminals
1.2.7 Regarding the installation of the reactor
When the inverter is installed near a large-capacity power transformer (500kVA or
more with the wiring length of 10m (32.81feet) or less) or the power capacitor is to be
switched, an excessive peak current will flow in the power supply input circuit,
damaging the converter circuit. In such a case, always install the reactor (FR-HEL(-H)
/FR-BEL(-H) or FR-HAL(-H)/FR-BAL(-H)). Since the filter pack includes a power factor
improving DC reactor, a reactor need not be installed separately.
REMARKS
*When connecting the FR-HEL(-H)/FR-BEL(-H) (filter pack), remove the jumper across
terminals P-P1.
The wiring length between the FR-HEL(-H)/FR-BEL(-H) and the inverter should be 5m
maximum and as short as possible.
Use the cables which are equal in size to those of the main circuit. (Refer to page 8)
CAUTION
•The power factor improving capacitor and surge suppressor on the inverter
output side may be overheated or damaged by the high frequency
components of the inverter output. Also, since an excessive current flows in
the inverter to activate overcurrent protection, do not install a capacitor or
surge suppressor. Use a power factor improving reactor for power factor
improvement.
•If a surge voltage occurs in the power supply system, this surge energy may
flow into the inverter, causing the inverter to display OV1, OV2 or OV3 and
come to an alarm stop. In such a case, also install the optional FR-HEL(-H)/FR-
BEL(-H) or FR-HAL(-H)/FR-BAL(-H) power factor improving reactor.
MCCB
Inverter
FR-HAL(-H)/
FR-BAL(-H)
Power
supply
R
S
TZ
Y
X
U
V
W
P1
FR-HEL(-H)/
FR-BEL(-H)(*)
P
R
S
T
010
Wiring length (m)
500
1500
1000
Power supply equipment
capacity (kVA)
Reactor installation
range