General Description - Migatronic DELTA 140 E Instruction Manual

DELTA 140E/160E is a monophased welding machine based on the Power Mosfets technology. It
has been constructed especially for those applications where welding jobs must be completed
quickly and easily. Using the latest inverter technology, MIGATRONIC has designed and produced
a compact welding machine able to weld with all types of electrodes (not high-yield electrodes) at
currents up to 140/160 amps.
The combination of low weight and compact design makes the DELTA 140E/160E extremely
suitable for installation work, field construction, emergency repairs, etc.
The electronics of the machine will keep the welding current stable at the set level by automatically
readjusting mains voltage and load variations.
DELTA 140E/160E is very easily operated since it is only fitted with one knob for infinitely variable
adjustment of the welding current from 10-140 A on DELTA 140E and 20-160 A on DELTA 160E.
The block diagram illustrates
the principle of the machine.
The machine is equipped with the following fixed functions:
Hotstart:
This auxiliary function helps to establish the arc when MMA welding starts. This is done by
increasing the welding current (when the electrode touches the workpiece) compared to the set
welding current. This function facilitates the ignition of the electrode and results in quicker and
better welding.
Arc control:
When arc and weld pool have been established, this function will ensure that the arc is kept stable,
and that the result will be a more uniform welding.
Static characteristic
U [V]
2
60,0
50,0
40,0
30,0
20,0
10,0
0,0
0
The static characteristic graph illustrates that the machine performs up to 140A/160A at 26V. The
high performance of the machine presupposes a mains voltage of not less than 230V.

GENERAL DESCRIPTION

Switch
driver
CONTROL
Static Characteristic
20 40 60 80 100 120
14
REGU-
LATOR
REF
Delta 140E
Delta 160E
Norm line
I [A]
2
140 160 180