Presentation; Inverter Technology; Technical Information; Available Features For Welding - Helvi COMPACT 306C Instruction Manual

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). Thanks
to the technology used in their manufacturing,
the generators make it particularly 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 includes several elec-
tronic functions to improve the arc trigger and
the dynamic action of the welding, in order to
obtain perfect welding with all kinds of electro-
des.
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.
POST GAS
CELLULOSIC ELECTRODE
HEAVY DUTY
FAN ON DEMAND
HOT START / ARC FORCE
VRD
LIFT ARC
306C 406C
8
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
20 31,5
Tab.2
Tab.3
13
EN-7