PDU–4xx–W
©
Dinel, s.r.o.
12
Transient phenomena accompanying switching of loads, in particular of induction character,
result either in damaging the switching mechanism itself (relay, contactor etc.) or in high-
frequency interference of impulse character, which can, by means of galvanic, inductive
and capacitive coupling incl. radiation, spread outside the circuit, and moreover, through
the supply line and grounding system, also interferes with other electronic equipment. To
suppress such interference, we recommend connecting an RC element.
Fig. 10: Connection examples used to suppress the interference resulting from disconnection
of inductive load a) RC element on relay contacts b) RC element on inductive load
fuse
fuse
