Fuji Electric FRENIC-MEGA, Instruction Manual

Page: 26 / 358

1-6
(2) Power supply lines (Application of a DC/AC reactor)
Use an optional DC reactor (DCR) when the capacity of the power supply transformer is 500 kVA or more and is 10 times or
more the inverter rated capacity or when there are thyristor-driven loads. If no DCR is used, the percentage-reactance of the
power supply decreases, and harmonic components and their peak levels increase. These factors may break rectifiers or
capacitors in the converter section of the inverter, or decrease the capacitance of the capacitors.
If the input voltage unbalance rate is 2% to 3%, use an optional AC reactor (ACR).
3) 61800 (IEC 67 ×
(V) voltage average phase - Three
(V) voltage Min - (V) voltage Max
(%) unbalance Voltage
=
-
(3) DC reactor (DCR) for correcting the inverter input power factor (for suppressing harmonics)
To correct the inverter input power factor (to suppress harmonics), use an optional DCR. Using a DCR increases the reactance
of inverter’s power source so as to decrease harmonic components on the power source lines and correct the power factor of
the inverter.
DCR models Input power factor Remarks
DCR2/4-
††
/
††
A/
††
B Approx. 90% to 95% The last letter identifies the capacitance.
DCR2/4-
††
C Approx. 86% to 90% Exclusively designed for inverters of 50 HP or above.
For selecting DCR models, refer to Chapter 8 "SPECIFICATIONS."
(4) PWM converter for correcting the inverter input power factor
Using a PWM converter (High power-factor, regenerative PWM converter, RHC series) corrects the inverter power factor up
to nearly 100%. When combining an inverter with a PWM converter, disable the main power down detection by setting the
function code H72 to "0." If the main power loss detection is enabled (H72 = 1 by factory default), the inverter interprets the
main power as being shut down, ignoring an entry of a run command.
(5) Molded case circuit breaker (MCCB) or residual-current-operated protective device (RCD)/earth leakage circuit breaker
(ELCB)
Install a recommended MCCB or RCD/ELCB (with overcurrent protection) in the primary circuit of the inverter to protect the
wiring. Since using an MCCB or RCD/ELCB with a lager capacity than recommended ones breaks the protective coordination
of the power supply system, be sure to select recommended ones. Also select ones with short-circuit breaking capacity suitable
for the power source impedance.
Molded Case Circuit Breaker (MCCB) and
Residual-Current-Operated Protective Device (RCD)/Earth Leakage Circuit Breaker (ELCB)
Power
supply
voltage
Nominal applied
motor
(HP)
Inverter type
HD/MD/
LD mode
Rated current of
MCCB and
RCD/ELCB (A)
Three-
phase
Single-
phase
w/ DCR w/o DCR
230
V
0.5 0.25 FRNF50G1S-2U
HD/LD
5
5
1 0.5 FRN001G1S-2U 10
2 1 FRN002G1S-2U
10
15
3 1.5 FRN003G1S-2U 20
5
3
FRN005G1S-2U 20 30
7.5
FRN007G1
„
-2U
30 50
FRN010G1
„
-2U
HD
10 5
LD
40 75
FRN015G1
„
-2U
HD
15 7.5
LD
50 100
FRN020G1
„
-2U
HD
20
10
LD
75 125
FRN025G1
„
-2U
HD
25
LD
100
150
FRN030G1
„
-2U
HD
30 15
LD
175
FRN040G1
„
-2U
HD
40 20
LD
150 200
FRN050G1
„
-2U
HD
50 25
LD
175 250
FRN060G1
„
-2U
HD
60
30
LD
200 300
FRN075G1
„
-2U
HD
75
LD
250 350
FRN100G1
„
-2U
HD
100
LD
350
-- 40
FRN125G1S-2U
HD
125
LD
400
FRN150G1S-2U
HD
150 50 LD 350
Power
supply
voltage
Nominal applied
motor
(HP)
Inverter type
HD/MD/
LD mode
Rated current of
MCCB and
RCD/ELCB (A)
Three-
phase
Single-
phase
w/ DCR w/o DCR
460 V
0.5 0.25 FRN0F50G1S-4U
HD/LD
5
5
1 0.5 FRN001G1S-4U
2 1 FRN002G1S-4U 10
3 1.5 FRN003G1S-4U
10
15
5
3
FRN005G1S-4U 20
7.5
FRN007G1
„
-4U
15 30
FRN010G1
„
-4U
HD
10
LD
20 40
5 FRN015G1
„
-4U
HD
15
LD
30 50
7.5 FRN020G1
„
-4U
HD
20
LD
40 60
10
FRN025G1
„
-4U
HD
25
LD
40 75
FRN030G1
„
-4U
HD
30 15
LD
50 100
FRN040G1
„
-4U
HD
40 20
LD
75
125 FRN050G1
„
-4U
HD
50 25
LD
100 FRN060G1
„
-4U
HD
60
30
LD
150
FRN075G1
„
-4U
HD
75
LD
125 200
FRN100G1
„
-4U
HD
100 40
LD
175 --
FRN125G1S-4U HD
Note: A box (
„
) in the above table replaces S or H depending on the enclosure.