Mitsubishi Electric FR-E 500 Instruction Manual page 53

" " " " Installation and selection of no-fuse breaker
Install a no-fuse breaker (NFB) in the power supply side for protection of the
inverter's primary wiring. Refer to the previous table and choose the NFB according
to the inverter's power supply side power factor (which changes with the power
supply voltage, output frequency and load). Especially for a completely
electromagnetic type NFB, the one with a larger capacity must be selected since its
operational characteristics change with harmonic currents. (Check the data of the
corresponding breaker for confirmation.) Also the earth leakage circuit breaker used
should be our product durable against harmonics/surges (such as the Progressive
Super Series).
" " " " Power factor improving reactor
Inverter Model
FR-E540-0.4K-EC
FR-E540-0.75K-EC
FR-E540-1.5K-EC
FR-E540-2.2K-EC
FR-E540-3.7K-EC
FR-E540-5.5K-EC
FR-E540-7.5K-EC
FR-E520S-0.4K-EC
FR-E520S-0.75K-EC
FR-E520S-1.5K-EC
FR-E520S-2.2K-EC
Note: The power factor may be slightly lower.
When the inverter is connected near a
large-capacity power supply transformer
(500kVA or more, wiring length 10m
maximum) or there is power capacitor
switch-over, excessive peak currents may
flow into the power input circuit and
damage the converter circuit. In such a
case, the power supply improving reactor
(FR-BEL or FR-BAL) must be installed.
Power Factor Improving
AC Reactor
FR-BAL-H0.4K
FR-BAL-H0.75K
FR-BAL-H1.5K
FR-BAL-H2.2K
FR-BAL-H3.7K
FR-BAL-H5.5K
FR-BAL-H7.5K
FR-BAL-0.75K (Note)
FR-BAL-1.5K (Note)
FR-BAL-2.2K (Note)
FR-BAL-3.7K (Note)
Power
supply
capacity
(kVA)
40
INSTALLATION AND WIRING
Power Factor Improving
DC Reactor
FR-BEL-H0.4K
FR-BEL-H0.75K
FR-BEL-H1.5K
FR-BEL-H2.2K
FR-BEL-H3.7K
FR-BEL-H5.5K
FR-BEL-H7.5K
FR-BEL-0.75K (Note)
FR-BEL-1.5K (Note)
FR-BEL-2.2K (Note)
FR-BEL-3.7K (Note)
NFB FR-BAL
R X
Power
S Y
supply
T Z
Power
1500
factor
improving
1000
reactor
range
500
0 10
Inverter
L U
1
L V
2
L W
3
+ P1
FR-BEL
Wiring length(m)
2