①Designed parameters
l Nominal power: 300kW
l Rated DC power: Pd=360kW
l Rated DC voltage: UdN=450V
l Rated DC current: IdN=800A
l The whole efficiency: η≥85%
l Output power: Pout＞300kW
l Designed frequency: f=300~350kHz
l MOSFET inverter: 120kW×3
l Tank circuit output mode: no welding transformer output, secondary resonance
②Power distribution requirements
l Nominal power: 300kW
l Rated DC power: Pd=360kW
l Line-in power factor: COSφ≥0.85
l Power distribution capacity: S≤420kVA
l Power supply voltage: 3-phase 380V/50Hz
l Line-in current: I=650A
l Line-in cable: each phase adopts two pieces of 150mm2 copper cable connected in parallel, 3-phase 4-line
③Circulation soft water cooling system (air-water cooling system, GPKL-Ⅱ-1.10)
l Cooling capacity: 94600kcal/h
l Outlet temperature: ≤40℃
l Working flux: 20m3/h
l Working pressure: 0.3Mpa
l Water tank capacity: 790L
l Rated power: pipe pump motor 7.5kW, spray pump motor 1.5kW, fan motor 2×1.1kW
l Rated voltage: 3-phase 380V/50Hz
l Noise: ≤85dB
l With water tank level indication and temperature display, low water level and over-temperature protection function
l Dimension: 2070×1400×2200mm