Switching DC
Switching DC
(OP)
Why is looping serially all the poles of a DC contactor switching a DC load increasing the ampacity it can handle (DC-1 utilization category)?
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RE: Switching DC
Gunnar Englund
www.gke.org
RE: Switching DC
TTFN
RE: Switching DC
The problem with high voltage dc contacts is not current carrying capacity, but current breaking capacity.
All sorts of tricks are used to do this, but at the basic level, contacts in series will definitely allow higher dc currents to be interrupted with less damage from arcing.