2.6. Harmonic current emissions (PFC version)
In markets where compliance with IEC 61000-3-2 is mandatory, refrigerators and freezers
with variable speed compressors must comply with class D requirements. However, according
to clause 7 of IEC 61000-3-2, equipment with a rated power of 75 W or less (Note1) are
exempted from this requirement.
Note 1 – The clause 10.1 of IEC 60335-1 in addition to the same clause of IEC 60335-2-24 defines Rated Power.
If the refrigeration system is applied in a market where compliance with IEC 61000-3-2 is not
mandatory or if the system has a rated power of 75 W or less, the recommended Inverter
type is the CF01F0x or CF02F0x (M/W/L). If the refrigeration system must comply with class
D requirements of IEC 61000-3-2, the recommended Inverters type are the CF01F2xM and
CF02F2xM.
The Inverters CF01F2xM and CF02F2xM are provided with a harmonics inductor that reduces
the Inverter harmonic currents. Their limits differ from each refrigeration system since it is a
function of power consumption during the pull-down test and currents during regular
operation. The CF01F2xM and CF02F2xM Inverters have different inductor options that will
better fit a group of systems. To select the best choice for your application, please get in
contact with your Nidec GA Application Engineer.
2.7. Capacitors discharge circuit
According to clause 22.5 of IEC 60335-1, appliances intended to be connected to the supply
mains by means of a plug or pins for insertion into socket outlets shall be constructed so that
in normal use, when pins are touched, there is no risk of electric shock from charged
capacitors (max. 34V, 1 sec after disconnection).
The CF01F and CF02F inverters are designed with discharge circuits, that may be assembled
upon demand. The Inverters can be configured with passive or active discharge circuit
solutions. To select the best choice for your application, please contact your Nidec GA
Application Engineer.
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