ET 220I AC/DC
Manual 0-5346
INSTALLATION, OPERATION AND SETUP
3-17
AC BALANCE is used for aluminium welding in AC HF GTAW or AC LIFT GTAW operating modes.
It is used to set the ratio of penetration to cleaning action for the AC GTAW welding arc.
Maximum weld penetration is achieved when the AC BALANCE is set to 10%. Maximum cleaning of heavily oxidized aluminium or
magnesium alloys is achieved when the WAVE BALANCE is set to 90%.
Maximum Penetration and
reduced cleaning
Balanced with 50% penetration
and 50% cleaning
Maximum Cleaning and
reduced penetration
10%
50%
65%
90%
50%
35%
(+)
(+)
(+)
(-)
(-)
(-)
AC Balance = 50%
AC Balance = 10%
AC Balance = 65%
A-12057
Table 3-5: AC GTAW Wave Balance
