Function Of Peripheral Equipment - Alpha 6000S series User Manual

7.2 Function of Peripheral Equipment

Peripheral
Equipment
Breaker
& Optional
Elements
It is used to cut
off the
current of the
frequency
inverter rapidly
Description and prevent the
power
caused by fault
with
inverter and its
circuits.
Remarks: *-marked items are optional elements.
7.2.1 AC Input Reactor
Using AC reactor can restrain higher harmonic wave and improve power factor obviously. In the
following situation, users are advised to use ac reactor.
●Ratio of capacity: power supply source: Inverter>10:1
●Silicon controlled load and switching controlled power factor compensator in a same place.
●Degree of three-phase voltage unbalance is more than 3%
Power
Voltage (V)
(kW)
0.4
0.75
Single-Phase
220
1.5
2.2
0.75
1.5
2.2
4
Three-Phase
5.5
380
7.5
11
15
18.5
177
Table 7-1 Function of Peripheral Equipment
Contactor
It is used to cut
fault
off the main
power supply
at the time of
frequency
inverter fault
fault
and prevent
power failure
the
& restarting
after the fault.
Table 7-2 List of Common AC Input Reactors
Current Inductance
(A) (mH)
5.1 10
9.2 7.6
13 4.8
25 3.2
3.7 7.6
5.4 4.8
7 3.2
11 2.0
14 1.5
18 1.2
27 0.8
34 0.6
41 0.5
Chapter 7 Peripheral Equipments
* AC
*EMI Filter
Reactor
It is used reduce the
radio
caused
It is used to frequency
improve the When
input power distance between the
factor, motor
reduce the frequency inverter is
higher less than 20m, it is
harmonic suggested
and inhibit connected to the power
the power supply side; when the
surge. distance is over 20m,
is suggested to be
connected at the output
side.
Voltage (V)
Three-Phase
380
* Braking Unit
and Braking
resistor
disturbance
by the
inverter. They are selected
the wiring and used when the
braking
and the cannot
requirements,
are applicable on
to be occasions
high-inertia load &
frequent braking or
rapid stop.
Power Current
(kW) (A)
45 96
55 128
75 165
93 195
110 22
132 262
160 302
185 364
200 385
220 420
250 480
280 530
315 605
torque
meet the
and
of
Inductance
(mH)
0.21
0.18
0.13
0.11
0.09
0.08
0.06
0.05
0.05
0.05
0.04
0.04
0.04