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LGK-200IGBT Inverter Air Plasma Cutter

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LGK-200IGBT Inverter Air Plasma Cutter

LGK-200IGBT Inverter Air Plasma Cutter

Inverter Air Plasma Cutting Machine

Inverter air plasma cutting machine LGK-200IGBT. Three-phase 380 V supply. Functions: Cut / Grid / Marking / Gouge. Design features - 100% duty cycle, suited to heavy industrial work - Current ramp-up technology that reduces torch consumable wear - Wide supply-voltage tolerance - Engineered dust-proof layout for high machine reliability - Compact, low-volume and lightweight construction, mountable on a CNC machine - Uses low-cost compressed air as the cutting gas, keeping running cost low - Accurate stepless presetting of cutting current - Plasma gas pressure detection and indication, plus a gas-test function for easy pressure setting - Automatic protection against over-temperature, over-voltage, under-voltage and phase loss Applications For manual and machine cutting of carbon steel, alloy steel and non-ferrous metals. Widely used in boiler and chemical plant construction, pressure-vessel fabrication, industrial power-plant installation, metallurgical and chemical construction, aerospace, automotive manufacturing and repair, and building decoration, and across all industries involving metal cutting. Why 200 A 200 A moves the LGK range into production cutting: three-phase supply sustains a 100% duty cycle through multi-shift operation, and the higher current cuts thicker plate at speeds that keep a CNC table productive. It is the usual specification for steel service centres, heavy fabrication shops and ship repair yards working plate above 25 mm.

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Key Features

  • IGBT inverter main circuit with high power density for its current class
  • 100% duty cycle on three-phase supply, rated for multi-shift production
  • Stepless current preset with ramp-up technology that extends consumable life
  • Wide supply tolerance for industrial sites with voltage fluctuation
  • Plasma gas pressure detection and indication with gas-test function
  • Automatic over-temperature, over-voltage, under-voltage and phase-loss protection
  • Compact construction that can be mounted directly on a CNC cutting machine
  • 200 A output for production cutting of plate above 25 mm

Typical Applications

  • Heavy steel structures and large member cutting
  • Primary power source for CNC cutting tables
  • Casting riser removal and heavy plate demolition
  • Shipbuilding, bridge and construction machinery plate

Selection & Setup Notes

200 A is the standard mechanised configuration: 40–50 mm quality cut in mild steel with sustained high duty. For continuous production, pair it with a water-cooled torch and the MSW-20L chiller, plus the DJC-01 torch guard.

Standards & Further Reading

External reference: ISO 9013 — Thermal cutting classification — ISO 9013 defines the quality classes for thermal cut surfaces (perpendicularity, bevel, dross).

Frequently Asked Questions

Is a water-cooled torch mandatory at 200 A?

Strongly recommended. At high current an air-cooled neck overheats quickly and burns tips and nozzles; water cooling extends continuous running and cuts spare-part cost.

What does consumable cost look like over an 8-hour day?

It depends heavily on thickness, speed and air maintenance. Typically electricity is about 15% and electrodes/nozzles 40–55%. The cost-per-hole method is in our consumables guide.

Can it cut above 60 mm?

It will sever occasionally, but that is outside the quality-cut band and squareness and speed suffer. For 60 mm and above, choose the LGK-300IGBT.

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