helvi COMPACT 300 Betriebsanleitung Seite 25

PRESENTATION
INVERTER TECHNOLOGY
These current generators with inverters are
designed to work under unstable voltages. The
use of power components and electrolytic con-
densers with higher voltage and a particular
control circuit ensure high stability of the wel-
ding current even in the event of power varia-
tions. These inverters allow for welding with co-
ated electrodes (MMA) and using scratch start,
with infusible electrodes (TIG), some equipped
with HF. Thanks to the technology used in their
manufacturing, the generators make it particu-
larly easy to use the two MMA-TIG functions
right from the start. These inverter generators
consist of a power control board, a switching
transformer and an impedance. The board in-
cludes several electronic functions to improve
the arc trigger and the dynamic action of the
welding, in order to obtain perfect welding with
all kinds of electrodes.
An IGBT bridge ensures quick reaction and
maximum accuracy, together with a remarka-
(3 ph)
KVA
Power
V
Uo
A
Amp. Min-Max
A
Amp. 60974-1
mm
Ø E
-
Insulation
-
Protec. Degree
kg
Weight
AVAILABLE FEATURES FOR WELDING
Table 3 offers a list of the main features avai-
lable for MMA and TIG welding of the genera-
tors. Some of these features are specific for
some models, while others are related to the
selected welding procedure.
300 X
300C X
305HF X
305HF
400V 50/60Hz
12,5
60%
60
5 ÷ 270
60% 270
100% 210
1,6 ÷ 6
H
IP22S
24
X X X
X X X
X X X
ble reduction of the magnetic components. As
a consequence, the weight of the generator is
reduced. All these features, other than their low
power consumption, make these generators
perfect for all kinds of welding. They are also
equipped with a handle for easy movement.
For satisfying results, and in accordance with
all safety standards, users must be familiari-
zed with:
MMA and TIG welding;
Regulation of welding parameters;
Welding performance.
TECHNICAL INFORMATION
The figures in Table 2 may differ from the
values on the information plates fixed to
the rear panel of their generators.
Note: For more information on the perfor-
mance of the product you have just pur-
chased, please refer to the values on the
information plates.
(3 ph)
KVA
Power
V
Uo
A
Amp. Min-Max
A
Amp. 60974-1
mm
Ø E
-
Insulation
-
Protec. Degree
kg
Weight
Table 2
All features can be selected and regulated
using the control panel assembled on the
front of the generators, to improve the wel-
ding performance. The exception to these
cases is the FAN ON DEMAND function: it
automatically regulates ventilation according
to the internal temperature of the generator.
X
X X X
Table 3
300 300C
400V 50/60Hz 400V 50/60Hz
12,5
60% 60%
60 60/80
5 ÷ 270 5 ÷ 270
60% 270 60% 270
100% 210 100% 210
1,6 ÷ 6 1,6 ÷ 6
H H
IP22S IP22S
20,5 24
X X X X
13
X
X
X
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