6. ASSEMBLY AND START-UP
Place of Installation
- Be sure to place it in a rainproof room with no direct sunlight, low humidity and dust, and surrounding air temperature at
-10°C〜+40°C.
- The ground inclination shall be less than 10°.
- For the sake of a good air cooling cycle, there must be at least 20cm of gap before and after the welding machine and
at least 10cm of space between the left and right sides.
- Welding shall be done in a place without wind (use windshield if necessary).
- Antifreeze is necessary when using a water-cooled welding torch.
Working Principle
The working principle of ARC series of welding machines is shown in the following figure. Single-phase 220V line
frequency AC is rectified into DC (about 312V), then is converted to medium frequency AC (about 50KHz) by inverter
device (IGBT), after reducing voltage by medium transformer (the main transformer) and rectified by medium frequency
rectifier (fast recovery diode), and is outputted by inductance filtering. The circuit adopts current feedback control
technology to insure current output stability. Meanwhile, the welding current parameters can be adjusted continuously and
sleeplessly to meet with the requirements of welding craft.
SINGLE PHASE AC
220V/110V
50/60Hz
Volt-Ampere Characteristic
COMPACT series of welding machines has excellent volt-ampere characteristic. Referring to the following graph. In MMA
welding, the relation between the rated loading voltage U2 and welding current I2 is as follows:
When I2≤600A, U2=20+0.04 I2 ( V) ; When I2>600A, U2=44 ( V)
KEEP WORKiNG
KEEP WORKiNG
Keep Working
SÍMBOLO
Single phase, 50-60Hz
Output positive
Output negative
¡CAUTION! Read user manual
DC
RECTIFY
INVERTER
DESCRIPCIÓN
AC
MEDIUM FRECUENCY
TRANSFORMER
CURRENT POSITIVE
FEEDBACK CONTROL
09
S i
6 1 6 0
m D v
AC
MEDIUM FRECUENCY
RECTIFY
DC
HALL
DEVICE
DC