Lincoln Electric IM10022 POWER WAVE AC_DC 1000 SD - Manual (Page 28)

A-19 INSTALLATION
POWER WAVE ® AC/DC 1000 ® SD
A-19
VOLTAGE SENSING CONSIDERATIONS FOR
MULTIPLE ARC SYSTEMS
Special care must be taken when more than one arc
is welding simultaneously on a single part. Remote
sensing is required in Multi-arc applications
• Avoid common current paths. Current from adja-
cent arcs can induce voltage into each others cur-
rent paths that can be misinterpreted by the power
sources, and result in arc interference.
• Position the sense leads out of the path of the
weld current. Especially any current paths common
to adjacent arcs. Current from adjacent arcs can
induce voltage into each others current paths that
can be misinterpreted by the power sources, and
result in arc interference.
• For longitudinal applications, connect all work
leads at one end of the weldment, and all of the
work voltage sense leads at the opposite end of the
weldment. Perform welding in the direction away
from the work leads and toward the sense leads.
See Figure A.12.
• For circumferential applications, connect all work
leads on one side of the weld joint, and all of the
work voltage sense leads on the opposite side, such
that they are out of the current path. See Figure
A.13
FIGURE A.12 MULTI-ARC LONGITUDINAL WELDS
DIRECTION
OF TRAVEL
CONNECT ALL
WORK LEADS AT
THE BEGINNING
OF THE WELD.
CONNECT ALL WORK SENSE
LEADS AT THE END
OF THE WELD.