GGP400KW solid state HF steel tube welder

GGP400KW is designed to weld steel Round pipe: 114~168mm square tube: up to 200 x 200mm, thickness4.0- 8.0mm

1.  Applied Range

           Steel pipe specification: Round pipe: φ114~φ165mm

                                                         Square pipe: under 200×200mm

           Steel pipe thickness: 4.0~8.0mm

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

           Welding mode: Induction welding/Contact welding

           Typical welding speed:

          For square pipe: 200×200×8mm, adopts induction welding mode, welding speed: ≥12m/min

         For square pipe: 200×200×8mm, adopts contact welding mode, welding speed: ≥15m/min

2.  Main Technical Index of 400kW Solid State H.F. Welder

( 1 )Designed parameters

           Nominal power: 400kW

           Rated DC power: Pd=480kW

           Rated DC voltage: UdN=450V

           Rated DC current: IdN=1070A

           The whole efficiency: η≥85%

           Output power: Pout > 400kW

           Designed frequency: f=200~300kHz

           MOSFET inverter: 120kW×4

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

( 2 )Power distribution requirements

           Nominal power: 400kW

           Rated DC power: Pd=480kW

           Line-in power factor: COSφ≥0.85

           Power distribution capacity: S≤560kVA

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

           Line-in current: I=870A

           Line-in cable: each phase adopts two pieces of 185mm2 copper cable connected in parallel, 3-phase 4-line

( 3 ) 400kW:

           With the adoption of water-water heat exchanger

           Pressure of inner circulation water: 0.15~0.25MPa

          Flow of inner circulation water:25m3/h

          Temperature of inner circulation out water: ≤40°C

          Temperature of inner circulation back water: ≤55°C

           Heat exchanger area: 15m2

           Flow of external circulation water: 40m3/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: ≥40m3(provided by user)

GGP400KW solid state HF steel tube welder