CHAPTER 2: INSTALLATION
THIN-LINE
®
SERIES 180M WELD HEADS
2-6
990-133
Section III. Connect Weld Cables
Weld Cables and Energy Losses
All Miyachi Unitek weld heads are supplied with the correct weld cables to provide maximum weld
energy. If you need to install longer cables, or replace damaged cables,
Use #2 AWG for lengths under 30.5 cm (12 inch) and #2/0 AWG for longer lengths
. Tie or
tape cables together to minimize inductive losses. A separation of weld cables surrounding an
area of one square foot could result in losses of up to 65%.
Use the shortest possible Welding Cables
. It is common to have losses of up to 50% per foot for
#6 cables and 20% for #2 cables.
Connect the welding cables on the
same side of the head
. Otherwise, the inductive losses added
by the intervening support post could substantially increase the amount of energy required to join
metal satisfactorily
Connect Cables to Head
Place the washer securing the welding
cable terminal between the screw head
and the welding cable terminal,
not
the
welding cable terminal, and the terminal
to which the cable is being attached.
Make sure the connections are free of
oxidation, dirt and grease.
Use 2/0 AWG cable for lengths under
45 centimeters (18 inches), and 4/0
AWG for longer lengths.
Use the shortest possible welding cables. Energy losses can range up to 20% per foot for
2/0 AWG cables.
Tie the welding cables together to minimize weld energy losses caused by unwanted
welding cable inductance.
Route the welding cables so that they do not run adjacent to magnetic materials and devices
such as air solenoids, tooling and steel heads.Run the welding cables through a single hole in
a steel plate.
Summary of Contents for THIN-LINE 180 M Series
Page 1: ...990 133 REV F WELD HEAD THINLINE 180 M SERIES OPERATION MANUAL ...
Page 34: ......
Page 38: ......
Page 42: ......