Mitsubishi Electric FR-D720S SC EC, Instruction Manual

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Wiring Connection of stand-alone option units
FR-D700 SC EC 3 - 43
3.6.7 Installation of a 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 the optional DC re-
actor (FFR-HEL-(H)-E) or AC reactor (FR-BAL-B).
When connecting the FFR-HEL-(H)-E, remove the jumper across terminals P/+ and P1,
resp. P/+ and P1. The wiring length between the FFR-HEL-(H)-E and inverter should be 5m
maximum and minimized.
I002038E
Fig. 3-35: Installation of a reactor
NOTE Use the same wire size as that of the power supply wire (R/L1, S/L2, T/L3). (Refer to page 3-8.)
Power
supply
AC reactor
(FR-BAL-B)
DC reactor
(FFR-HEL-(H)-E)
Installation
range of reactor
Wiring length [m]
Po
w
e
r s
u
p
p
ly
capacity [kV
A
]
M
3~
Inverter
DC reactor
(FFR-HEL-(H)-E)
1-phase power input
3-phase power input
Power
supply
AC reactor
(FR-BAL-B)
Inverter
M
3~