Power supply ICOS-PS 3160 series
Installation, use and maintenance manual - EN
Ver. 1.05
38
5.9 Reactor - J4
This connector serves to connect a reactor (optional) in series at the output of the rectifier bridge. Because the
input current is highly distorted due to the non-linearity of the rectifiers, a large generation of current harmonics
arise related to the current drawn from the mains. These cause some problems, such as:
• increase of the effective value of the input current, at the same active power delivered to the output;
• increase of the Joule losses on the power conductors;
• oversizing of the protective devices (magneto-thermal breakers, fuses) in order to face the increased re-
quest of current;
• problems due to maximum harmonics levels allowed by the rules in force;
• distortion of the mains power supply;
• overload of upstream transformers.
Distortion can be reduced by installing an adequately sized reactor in series with the rectifier bridge; to this pur-
pose, a connector is available (see drawing):
X
X
Reactor
Marker
Signal
X
Reactor - 1
X
Reactor - 2
