Westweld NB-350MK, Manual Instruction

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8 Working principle
8.1 Working principle
NB-MK series gas shield welding machine adopts the latest electron device----IGBT is the key inverter device. The three
phase AC power is transformer into 20KHz high frequency voltage after bridge rectified. The high frequency voltage output
welding voltage after transforming, rectifying and filtering.
8.2 Drawing
Fig.8 Drawing
In
si
d
e
1.2 1.2
～
1.5 320
～
340 32
～
34 40
～
50 15 15
～
20
H
ig
h
s
p
ee
d
c
o
n
d
iti
o
n
0.8 0.8 0 89 16.5 120 10 15
1.0 0.8 0 100 17 120 10 15
1.2 0.8 0 110 18 120 10 15
1.6 1
、
1.2 0 160 19 120 10 15
2.0 1
、
1.2 0 180 20 80 15 15
2.3 1
、
1.2 0 200 22 100 15 20
3.2 1.2 0 240 25 100 15 20