Installation and Wiring
Seite 26 / 180
See [(4) Common Applicable Tools] in this chapter
Note1: The applicable tools indicate for WATT standard four-pole squirrel-cage Motor.
Note2: Select applicable tools for breakers examining the capacity of breakers.
(Use Inverter type.)
Note3: It needs bigger wires for power lines, if the distance exceeds 20m.
Note4: Use earth-leakage breakers (ELB) for safety.
*Use 0.75mm
2
for Alarm output contact.
Separate by the sum( wiring distance from Inverter to power supply, from inverter to
motor for the sensitive current of leak breaker (ELB).
Wiring distance
Sensitive
Current(mA)
100m and less
50
300m and less
100
Name Function
Input reactor(harmonic control,
electrical coordination, power-factor
improvement)(ALI-***)
This part is used when the unbalance voltage rate is 3% or more and power
supply is 500 kVA or more, and there is a rapid change in the power supply/. It
also improves the power factor.
Radio noise filter
(zero-phase reactor)(ZCL-*)
Using the inverter may cause noise on the peripheral radio through the power
lines.
This part reduces noise.
Noise filter for Inverter
(JF-***)
This part reduces common noise generated between the power supply and
the ground, as well as normal noise. Put it in the primary side of inverter.
Input radio noise filter
(capacitor filter)(CFI-*)
This part reduces radiation noise emitted from wire at the input.
Direct reactor(DCL-*-**)
This part control harmonic from inverter.
Breaking resistor
Regenerative breaking unit
This part is used for applications that need to increase the brake torque of the
inverter or to frequently turn on and off and to run high inertia load.
Output noise filter(ACF-C*)
This part reduces radiation noise emitted from wire by setting between
inverter and motor. And it reduces wave fault to radio and TV , it is used for
preventing malfunction of sensor and measuring instruments.
Radio noise filter(zero-phase
reactor(ZCL-***)
This part reduces noise generated at the output of the inverter. (It is possible
to use for both input and output.)
Output alternation reactor
Reducing vibration, thermal
Relay, preventing misapplication
(ACL-*-**)
Running motors with the inverter generates vibration greater than that with
commercial power supply. This part installed between the inverter and motor
reduces torque ripple. When the cable length between the inverter and motor
is long (10m or more), a countermeasure for a malfunction of the thermal relay
by harmonic due to switching on inverter is taken by inserting reactor.
There is the way to use current sensor in stead of thermal relay.
LCR filter
Sine-wave filter at the output.
Note5: When using CV line and wiring by rigid metal conduit, leak
flows.
Note6: IV line is high dielectric constant. So the current increase 8
times.
Electric
contactor
ELB
RB
R
S
T
U
V
W
PD
P
N
R0
T0
In
ve
rte
r
Motor
IM
Power supply
