Helvi COMPACT 306HF Manual Del Usuario página 43

PRESENTATION
INVERTER TECHNOLOGY
These current generators with inverters are
designed to work under unstable voltages.
The use of power components and electrolytic
condensers with higher voltage and a particu-
lar control circuit ensure high stability of the
welding current even in the event of power va-
riations. These inverters allow for welding with
coated electrodes (MMA) and using scratch
start, with infusible electrodes (TIG), 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-
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 data 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) 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
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.
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 exceptions to these
cases are the FAN ON DEMAND and HE-
AVY DUTY functions: the first automatically
regulates ventilation according to the internal
temperature of the generator, while the latter
defines the industrial concept of the product.
2T / 4T
PULSED
HF
POST GAS
SLOPE DOWN
SLOPE UP
CELLULOSIC ELECTRODE
HEAVY DUTY
FAN ON DEMAND
HOT START / ARC FORCE
VRD
LIFT ARC
306HF 416HF
13
60% 60%
75
5 ÷ 300 TIG 5 ÷ 400 TIG
50% 300 TIG 50% 400 TIG
100% 210 TIG 100% 300 TIG
1,6 ÷ 6 MMA 1,6 ÷ 6 MMA
H H
IP22S IP22S
23 34
Tab.2
Tab.3
13
EN-7