Hitachi L200 Manual Do Utilizador

Component Descriptions

Motor Control

Accesso

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The zero-phase reactor helps reduce 
radiated noise from the inverter wiring. It 
can be used on the input or output side of 
the inverter. The example zero-phase 
reactor shown to the right comes with a 
mounting bracket. The wiring must go 
through the opening to reduce the RF 
component of the electrical noise. Loop 
the wires three times (four turns) to attain 
the full RF filtering effect. For larger wire 
sizes, place multiple zero-phase reactors 
(up to four) side-by-side for a greater 
filtering effect.

The EMI filter reduces the conducted noise on the power supply wiring generated by the 
inverter. Connect the EMI filter to the inverter primary (input side). The FFL100 series 
filter is required for compliance to the EMC Class A directive (Europe) and C-TICK 
(Australia). See 

WARNING: The EMI filter has high internal leakage current from power wiring to the 
chassis. Therefore, connect the chassis ground of the EMI filter before making the power 
connections to avoid danger of shock or injury.

This capacitive filter reduces radiated noise from the main power wires in the inverter 
input side. This filter is not for achieving CE compliance and is applicable to the input 
side only of the inverter. It comes in two versions—for 200V class inverters or 400V 
class inverters. Please refer to the documentation that comes with the radio noise filter 
for installation instructions.

The DC choke (reactor) suppresses harmonics generated by the inverter. It attenuates the 
high-frequency components on the inverter’s internal DC bus (link). However, note that 
it does not protect the diode rectifiers in the inverter input circuit.