Technical Information; Available Features For Welding - Helvi COMPACT 400 Manuel D'instruction

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) 400V 50/60Hz 400V 50/60Hz
KVA
Power
V
Uo
A ±
Amp. Min-Max MMA
A ±
Amp. Min-Max TIG
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 specifi c for
some models, while others are related to the
selected welding procedure.
All features can be selected and regulated
using the control panel assembled on the
400 400C
13 13,5
60% 60%
50 50
5 ÷ 350 5 ÷ 350
5 ÷ 400 5 ÷ 400
50% 350 50% 350
100% 270 100% 270
1,6 ÷ 6 1,6 ÷ 6
H H
IP22S IP22S
29,6 30,1
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 fi gures in Table 2 may differ from the
values on the information plates fi xed 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) 400V 50/60Hz 400V 50/60Hz
KVA
Power
V
Uo
A ±
Amp. Min-Max
A
Amp. 60974-1
mm
Ø E
-
Insulation
-
Protec. Degree
kg
Weight
Tab.2
front of the generators, to improve the wel-
ding performance. The exceptions to these
cases are the FAN ON DEMAND and HE-
AVY DUTY functions: the fi rst automatically
regulates ventilation according to the internal
temperature of the generator, while the latter
defi nes the industrial concept of the product.
415HF 420HF/C
13 13,5
60% 60%
50 50
5 ÷ 350 5 ÷ 350
50% 350 50% 350
100% 270 100% 270
1,6 ÷ 6 1,6 ÷ 6
H H
IP22S IP22S
32 32,5
25