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Zero-phase Reactor (RF Noise Filter)
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.
EMI Filter
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 “CE–EMC Installation Guidelines” on page D–2.
W
ARNING: 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.
NOTE: European version of X200 series have integrated EMC filter as standard. It is
EN61800-3 category C1 for 200V class models (-SFE models), and EN61800-3 category
C2 for 400V class models (-HFE models).
RF Noise Filter (Capacitive)
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.
DC Link Choke
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.
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Inverter System
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