Peripheral Electric Parts Of Hv590 - HNC Electric HV590 Series User Manual

3.1.2 Peripheral Electric Parts of HV590

PartName
Circuit breaker
Contactor
AC input reactor
EMC input filter
DC reactor
Between the inverter output
side and the
ACoutput reactor
motor,closetothe inverter
Section IV. Keyboard Operation
InstallationLocation
The front-end
theinputcircuit
Between the circuitbreaker
andthe inverterinputside
Inputsideof the inverter
Input side ofthe inverter
HV590 series can adopt
external DC reactor
according to the need.
FunctionDescription
of Disconnect the power supply in case of downstream
equipment is over current
Power-onandpower-offoftheinverter.Frequent
power-on/power-off operation(at least once per
minute) on the inverter should be avoided
Improve the power factor of the input side：
1.Eliminate the high order harmonics of the input
side effectively, and prevent other equipment from
damagingdue to voltage waveform deformation.
2.Eliminate the unbalancedinput current due to
theunbalancedpowerphases.
1.Reduce the external conduction and radiation
interference of the inverter;
2.Reduce the conduction interference flowing from
thepower end to the inverter, thus improving the
anti-interference capacity of the inverter.
3.The common size of 3-phase EMI noise filter is
shown as following： confirm the power supply is
3-phase three lines or 3-phase four lines or single
phase. Grounding wire is as short as possible, try
to place the filter near the converter.
Please choose EMI filter when the inverter is used
in residential area, commercial area, science area
as well as situations where higher demand to
prevent radio interference is needed or meeting
CE、UL、CSA standard but existing equipment that
anti-interference ability is not sufficient.
If needing the filter, please connect with the company.
Improve the power factor of the input side：
1.Improve the overall efficiency and thermal stability
2.Effectively reduce the influence of high order
harmonicsat the input side on the inverter and
reduce the external conduction and radiation
interference.
The inverter output side generally has higher
harmonic.When the motor is far from the inverter,
since there are many capacitors in the circuit,
certain harmonics will cause resonance in the circuit
and bring in the following results：
1.Degrade the motor insulation performance and
damagethe motor for the long run
2.Generatelarge leakage current and cause frequent
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