Hwayuan Electric LGK-40/63IGBT, Руководство оператора

Страница: 9 / 20

LGK-40/63IGBT OPERATOR’S MANUAL
8
Rated input voltage 3
～
50Hz 380V
Rated input capability 6.0KVA 9.9KVA
Open circuit voltage 222VDC 260VDC
Rated output current 40A 63A
Current adjusting range 20
～
40A 30
～
63A
Rated output voltage 96V 105.2V
Rated duty cycle 60% 60%
Insulation level F F
Quality cutting thickness
（
steel
）
0.1
～
7mm 0.1
～
12mm
Max cutting thickness
（
steel
）
12mm 20mm
Applied plasma air Compressed air Compressed air
Cooling model Air-cooling Air-cooling
Dimension(L×W×H) 585×280×485mm
800×380×610mm
Weight 25Kg 26Kg
Shell shield rank IP21S
2
．
Plasma gas conditions

Work pressure range
：
0.3MPa
～
0.5MPa

Gas supply pipe compression strength
：
≥1MPa

Gas supply pipe inner dimension
：
≥Φ8

Gas supply flux
：
≥40L/min

Filter water from gas and then put it into cutter
Figure 1 External characteristic
◆ Work principles
The control circuit of cutting machine adopts advanced electronic part IGBT as the main inverter
switch component. Three-phase AC power is converted to 20KHz high-frequency DC current after
being rectified by three phase rectifier. Then under the function of IGBT inverter the DC current is
inverted to AC high frequency current, which is inverted to DC current after experiencing voltage
reduction in high frequency transformer, current rectifying in fast recovery diode. This DC current is
filtered through reactor, and the output cutting current is obtained. Control circuit can control output
current by controlling driven pulse width. The real time cutting current, which is obtained through
I
U
270V
240V
40A 63A
63A/105.2V
40A/96V