KNOVA KN MIG-200 Manual Del Usuario página 4

TECHNICAL SPECIFICATION
Principio del soldador
Rectifier
The welder acquires 220V single phase industrial frequency
DC power source through the power switch SW 101 and
rectify through single phase rectifier bridge B1 and then
filtered through capacitor C1, C2, C3, C4 to get the DC
current. The 30 KHz AC current is got through the IGBT
(Q1, Q2, Q3, and Q4) all-bridge inverter. Then this alternating
current, transformed by the intermediate frequency
transformer and rectified by quick recovery diode
( D4, D5, D6, D7), outputs the stable direct current for the
welder immediately after it has been filtered by the reactor
L2. The wire feed speed can be stepless adjusted through
the speed adjust knob. The welding current is easily influenced
from the wire feed speed, usually the faster the wire feed
speed the bigger the Amp value under the same voltage.
Welder's Structures
KN MIG-200 use the movable carton like structures:
The upper part in the front is equipped with a welding current
regulation knob, power indicator light (green), abnormal
indicator light (yellow), while the lower part is furnished with
the torch quick connector and "-" quick connector. The back
side is installed with power switch, gas valve connection ,
cooling fan, power source lead-in wire, breaker . On the top
there is a handle for the convenient of easy transport. When
you open the cover, there is one primary transformer, one
piece of printed circuit board. The bottom part is supplied with
output reactor, primary transformer and etc. Installed in
the middle part is a radiator with power elements.
Applying Norm of Welder
KN MIG-200 Inverter MIG Welder conforms with
the following standard to perform EN 60974-1.
Torch Illustration
The torch is composed by torch stand, connecting
cable and handle.
Torch stand is the interface of torch and wire feeding device.
Connecting cable: covered by nylon pipe the liner is loaded in
the center of coreless cable. The inner part of liner is
the passage for wire feeding. The space between liner
and coreless cable is the passage for shielded gas.
Coreless cable is the passage for current.
There is a gooseneck installed in the handle of the torch.
In the back part of the torch there is a connecting with
the coreless cable and in the front part is a shunt.
The shielded gas distributes via the shunt and forms
wellproportioned air current in the nozzle, and then spurt
out in a form of air hanging. Set with a sensitive switch on
the handle to control the welding current.
Inverter
Filter
function
Drive
Protection
inspect
Transformation
Modulate
Process
control
Sign & Pictures Illustration
Ground
Descending
Arc welder
1 single phase AC power source
Single phase stillness
transducer---transformer---rectifier
MIG
DC current
+: "+"
Electrode
-: "-"
Electrode
X
Duty Cycle
I
Rated Input Current
1
I
Rated Welding Current
2
P
Rated Input Power
1
U
Rated Open Circuit Voltage
0
U
Rated Input Voltage
1
U
Rated Load V
2
AC, Rated frequency 50 Hz, workable
~50/60 Hz
frequency 60 Hz.
...V
Voltage (V)
...A
Current (A)
...KVA
Power (KVA)
...%
Duty cycle
Output range. Rated minimum and rated maximum
A/...V~...A/...V
welding current and related load voltage.
Case protection class. IP is the code of International Protection.
2 mean preventing user's finger from the dangerous parts;
preventing the solid material with the diameter no less than
IP21S
12.5 mm into the box. 1 means preventing water dropping
vertically which is harmless. S means water proof test is
conducting while the movable parts are standstill.
H
H insulation grade.
3
High
frequency
rectifier
Trait
Sampling
control
Current
adjustment