9. SETTING THE ARC WELDER
9.1 RATING PLATE INFORMATION
A rating plate is affixed to the welding machine. Fig.1. shows an example of this plate.
$
Constructor name and machine part No.
%
Delivered alternate current frequency.
&
Serial number
'
European reference standard for the construction and safety of welding equipment.
(
WELDING CIRCUIT PERFORMANCE
U0V
Minimum and maximum open circuit voltage (open welding circuit).
Ø
Diameter of weldable electrodes.
I2A
Value of the current needed to weld using different electrode diameters.
tw
Welding time running from thermal cutout reset until the next tripping
with the transformer at the operating temperature.
tr
Cooling time running from thermal cutout tripping until the next reset with
the transformer at the operating temperature.
A/V
Conventional welding current (maximum) and corresponding normalised
voltage.
)
POWER SUPPLY DATA
U1
Input voltage (permitted tolerance: +/- 10%)
I1
eff
Effective absorbed current.
I1
max
Maximum absorbed current.
*
Weight
+
Safety symbols.
,
Level of protection from solids and liquids.
-
Input power required:
1" alternate single phase voltage, frequency
.
Symbol indicating the possibility to use the welding machine in environments
potentially subject to electric discharges.
/
Indicates the machine is an ARC/MMA process machine.
0
Indicates this machine produces an AC welding current.
$
'
(
)
0
/
.
%
-
+
*
,
&
15
FIG. 1
