INSTALLATION AND WIRING
42
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" 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
durable against harmonic/surge (such as the Progressive Super Series).
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" Power factor improving reactor
Inverter Model Power Factor Improving AC Reactor Power Factor Improving DC Reactor
FR-E520-0.1K FR-BAL-0.4K (Note 1) FR-BEL-0.4K (Note 1)
FR-E520-0.2K FR-BAL-0.4K (Note 1) FR-BEL-0.4K (Note 1)
FR-E520-0.4K FR-BAL-0.4K FR-BEL-0.4K
FR-E520-0.75K FR-BAL-0.75K FR-BEL-0.75K
FR-E520-1.5K FR-BAL-1.5K FR-BEL-1.5K
FR-E520-2.2K FR-BAL-2.2K FR-BEL-2.2K
FR-E520-3.7K FR-BAL-3.7K FR-BEL-3.7K
FR-E520-5.5K FR-BAL-5.5K FR-BEL-5.5K
Three-phase 200V
FR-E520-7.5K FR-BAL-7.5K FR-BEL-7.5K
FR-E540-0.4K FR-BAL-H0.4K FR-BEL-H0.4K
FR-E540-0.75K FR-BAL-H0.75K FR-BEL-H0.75K
FR-E540-1.5K FR-BAL-H1.5K FR-BEL-H1.5K
FR-E540-2.2K FR-BAL-H2.2K FR-BEL-H2.2K
FR-E540-3.7K FR-BAL-H3.7K FR-BEL-H3.7K
FR-E540-5.5K FR-BAL-H5.5K FR-BEL-H5.5K
Three-phase
400V
FR-E540-7.5K FR-BAL-H7.5K FR-BEL-H7.5K
FR-E510W-0.1K FR-BAL-0.75K (Note 1)
(Note 2)
FR-E510W-0.2K FR-BAL-1.5K (Note 1)
(Note 2)
FR-E510W-0.4K FR-BAL-2.2K (Note 1)
(Note 2)
Single-
phase
100V
FR-E510W-0.75K FR-BAL-3.7K (Note 1)
(Note 2)
Note: 1. The power factor may be slightly lower.
2. The single-phase 100V input models do not accept the power factor improving DC reactor.
When the inverter is connected near a large-
capacity power supply transformer (500kVA
or more, wiring length 10m (32.81 feet)
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.
When the FR-E510W-0.4K-NA is connected
to a single-phase 100V class output power
transformer (in excess of 50kVA capacity),
install the power factor improving reactor
(FR-BAL-2.2K) to improve reliability.
NFB
Inverter
FR-BAL
Power
supply
R
S
TZ
Y
X
R (L
1
)
S (L
2
)
T (L
3
)
U
V
W
P(
+
)P1
FR-BEL
Power
factor
improving
reactor
range
010
500
1500
1000
Power
supply
capacity
(kVA)
Wiring length(m)
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