HUAYUAN LGK-100.160.200IGBT, Руководство оператора

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CHENGDU HUAYUAN ELECTRIC EQUIPMENT CO.,LTD LGK-100.160.200
8
四、
Technique Parameters
1. Main technique parameters
LGK-100IGBT LGK-160IGBT LGK-200IGBT
Shell shield rank IP21S
Rated input voltage 3 ～ 50Hz 380V
Rated input capability 14.5KVA 26.3KVA 34.9KVA
Rated output current 100A 160A 200A
Rated output voltage 120V 144V 160V
Rated duty cycle 100% 100% 100%
Open circuit voltage 285VDC 315VDC 315VDC
Current adjusting range 30 ～ 100A 40 ～ 160A 40 ～ 200A
Insulation level F F F
Quality cutting capability （ steel ） 0.3 ～ 22mm 1 ～ 35mm 1 ～ 45mm
Max cutting capability
（
steel
）
40mm 55mm 65mm
Applying plasma air Compressed air Compressed air Compressed air
Work plasma gas pressure range 0.4~0.5MPa 0.4~0.6MPa 0.45~0.6MPa
Torch cooling method Air-cooling Air-cooling Air-cooling
Air striking method Secondary arc striking with high voltage non-contact
Dimension(L×W×H)
695×320×580mm
80 0×380×610mm 80 0×380×810mm
Weight 51Kg 73Kg 90Kg
2
．
Plasma gas conditions
 Work pressure range
：
0.4MPa
～
0.6MPa

Gas supply pipe voltage-withstand ： ≥1MPa
 Gas supply pipe internal dimension
：
≥Φ8
 Gas supply flux
：
≥180L/min
 Filter water from gas and then put it into cutter
五．
Work principles
 The main circuit of cutting machine adopts advanced electron parts—IGBT as the
main inverter switch component. Three-phase AC power source is rectified at fundamental
frequency by the full-bridge and changed to 20KHz high-frequency current. After transformed
low voltage by the high-frequency transformer, rectified by fast recovery diodes and filter
reactor, the high-frequency current outputs cutting current. The control circuit controls output
current by adjusting pulse width of driving signal and obtains real time cutting current by its
sensor at output terminal in series as the negative feedback control signal which input into
special PWM adjusting integrated circuit after comparing with current adjusting signal, then
output controlled driving plus to control IGBT. Thereby maintain the strict invariableness of
output current and obtain dropping constant-current characteristic. Striking arc adopts
high-frequency striking model. The main circuit refers to appendix figure1
，
principle frame of
control circuit is shown as figure 2.