GGP1200KW solid state HF steel tube welder

GGP1200KW is designed to weld steel Round pipe: 355~ 610 mm square tube: 300 X 300 - 500 X500mm, thickness 6.0- 20.0mm

1.  Applied Range

           Steel pipe specification: Round pipe: φ355~φ610mm

                                                       Square pipe: 300×300mm~500×500mm

           Steel pipe thickness: 4.0~20.0mm

           Welding pipe type: Round pipe/square pipe/rectangular pipe

           Welding mode: Induction welding/Contact welding

           Typical welding speed:

          For square pipe: 300×300×16mm, adopts induction welding mode, welding speed: ≥15m/min

          For square pipe: 300×300×16mm, adopts contact welding mode, welding speed: ≥25m/min

          For square pipe: 500×500×20mm, adopts contact welding mode, welding speed: ≥15m/min

2.  Main Technical Index of 1000kW Solid State H.F. Welder

( 1 ) Designed parameters

           Nominal power: 1200kW

           Rated DC power: Pd=1440kW

           Rated DC voltage: UdN=450V

           Rated DC current: IdN=3200A

           The whole efficiency: η≥85%

           Output power: Pout  > 1000kW

           Designed frequency: f=150~250kHz

           MOSFET inverter: 120kW×12

           Tank circuit output mode: no welding transformer output, secondary resonance

( 2 )Power distribution requirements

           Nominal power: 1200kW

           Rated DC power: Pd=1440kW

           Line-in power factor: COSφ≥0.85

           Power distribution capacity: S≤1700kVA

           Power supply voltage: 3-phase 380V/50Hz

           Line-in current: I=2610A

           Line-in cable: each phase adopts four pieces of 300mm2 copper cable connected in parallel, 3-phase 4-line

( 3 ) 1200kW:

a. for switchgear rectifying cabinet              1set

           With the adoption of water-water heat exchanger

           Pressure of inner circulation water: 0.15~0.25MPa

          Flow of inner circulation water: 18m3/h

          Temperature of inner circulation out water: ≤40°C

          Temperature of inner circulation back water: ≤55°C

           Heat exchanger area: 9m2

           Flow of external circulation water: 20m3/h(provided by user)

          Temperature of external circulation inlet water: ≤35°C

          Temperature rise of heat exchanger external circulation water: ≤15°C

          Pressure of inlet water: 0.25~0.3MPa (approximately 2.5~3kg/cm2)

          Volume for external circulation water pool: ≥20m3(provided by user)

 b. for inverter output cabinet                1set

           With the adoption of water-water heat exchanger

           Pressure of inner circulation water: 0.15~0.25MPa

          Flow of inner circulation water: 58m3/h

          Temperature of inner circulation out water: ≤40°C

          Temperature of inner circulation back water: ≤55°C

           Heat exchanger area: 30m2

           Flow of external circulation water: 100m3/h(provided by user)

          Temperature of external circulation inlet water: ≤35°C

          Temperature rise of heat exchanger external circulation water: ≤15°C

          Pressure of inlet water: 0.25~0.3MPa (approximately 2.5~3kg/cm2)

          Volume for external circulation water pool: ≥100m3(provided by user)

GGP1200KW solid state HF steel tube welder