Specifications
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4.2.4
4.2.4
4.2.4
4.2.4 Wiring
Wiring
Wiring
Wiring at
at
at
at input
input
input
input side
side
side
side of
of
of
of m
m
m
m ain
ain
ain
ain
c
c
c
c ircuit
ircuit
ircuit
ircuit
Circuit
Circuit
Circuit
Circuit b
b
b
b reaker
reaker
reaker
reaker
I t is necessary to connect a circuit breaker
which is compatible with the capacity of inverter
b etween 3ph AC power supply and power input
terminals (R , S , and T). The capacity of breaker
is 1.5 ~ 2 times to the rated current of inverter.
See
Specification
Specification
Specification
Specification s
s
s
s of
of
of
of Breaker,
Breaker,
Breaker,
Breaker, Cable,
Cable,
Cable,
Cable, and
and
and
and
Contactor
Contactor
Contactor
Contactor
for the detail that the capacity of the
invertrer should between 1.5~2 times of the
rated current of the inverter.
Install
Install
Install
Install breaker
breaker
breaker
breaker
Because of the frequency ivnerteroutput
is higher PWM signal , so have the high
frequency current , please select current
sensitivity up 30mA ; if use the universal
br ea ker,please select the sensitivity up 20mA
,
action time up 0.1 second breaker.
Electromagnetic
Electromagnetic
Electromagnetic
Electromagnetic c
c
c
c ontactor
ontactor
ontactor
ontactor
In order to cut off the input power effectively
when fault occurs to the system, it is necessary
to install a contactor at the input side to control
the ON-OFF of the main circuit power supply.
Input AC r eactor
In order to prevent the rectifier damage result
from the large current when peak pulse input, AC
re a ctor should be installed at the input side. I t
can also be used to improve the power factor of
the input side. F or the effective protection, it is
recommended to install input reactor for
inverters of 380V / 110kW (including 110kW) and
install input reactor for inverters of 220V / 45kW .
Install
Install
Install
Install surge
surge
surge
surge suppressor
suppressor
suppressor
suppressor
As the Electromagnetic contactor 、 solenoid
valve 、 Magnetic Coil 、 Electromagnetic breaker
beside the frequency inverter,please install the
surge suppressor.
Input
Input
Input
Input EMC
EMC
EMC
EMC filter
filter
filter
filter
T he surrounding device may be disturbed by the
cables when the inverter is working. EMC filter
can minimize th e interference. J ust like the