l Independent design of switchgear rectifying cabinet and inverter output cabinet, connected by soft cable, which is convenient for layout at user’s site.
l The rectifier adopts 3-phase 6-pulse thyristor rectifying. For large power welder, 12-pulse thyristor rectifying can be selected to eliminate grid side fifth and seventh harmonic, and grid side harmonic current is the lowest.
l Power combination of the inverter bridge is accomplished by the way of power unit superposition. Each MOSFET power unit is designed to be 50kW/100kW/150kW and slideway drawer structure, which is convenient for installation and repair.
l High standard electromagnetism compatibility design, electromagnetism radiation meets national standard.
l Closed cabinet design, meeting rigor environmental requirements on site.
* The user needs to prepare three winding power transformer.
l 3-D rectifier adopts high cost performance MCU controlling to realize precise synchronism trigger with high control precision and small grid-side non characteristic harmonic.
l Resonant inverter adopts CPLD to form full-digital control system that is characterized by their automatic constant angle, high phase-lock precise and wide scope of phase-lock.
l The welder has electronic automatic load matching function with good load adaptability, high electrical efficiency and high power coefficient.
l The welder has perfect protection function with reliable working and low failure rate.
l Adopt PLC and touch screen to form perfect HMI system.
l Realize integrated automatic control of welder system.
l Fault display and diagnosis system.
| Model | AC input | Rated DC voltage | Rated DC current | Frequency scope | Electrical efficiency |
| GGP60-0.8-H | 3AC380V 50/60Hz |
450V | 130A | 650~800 kHz | ≥85% |
| GGP100-0.45-H | 3AC380V 50/60Hz |
450V | 220A | 400~450 kHz | ≥85% |
| GGP150-0.4-H | 3AC380V 50/60Hz |
450V | 330A | 350~400 kHz | ≥85% |
| GGP200-0.35-H | 3AC380V 50/60Hz |
450V | 440A | 300~350 kHz | ≥85% |
| GGP250-0.3-H | 3AC380V 50/60Hz |
450V | 550A | 250~300 kHz | ≥85% |
| GGP300-0.3-H | 3AC380V 50/60Hz |
450V | 660A | 250~300 kHz | ≥85% |
| GGP400-0.3-H | 3AC380V 50/60Hz |
450V | 880A | 250~300 kHz | ≥85% |
| GGP500-0.2-H | 3AC380V 50/60Hz |
450V | 1100A | 150~200 kHz | ≥85% |
| GGP600-0.2H | 3AC380V 50/60Hz |
450V | 1300A | 150~200 kHz | ≥85% |
| GGP700-0.2-H | 3AC380V 50/60Hz |
450V | 1500A | 150~200 kHz | ≥85% |
| GGP800-0.2-H | 3AC380V 50/60Hz |
450V | 1800A | 150~200 kHz | ≥85% |
Note: Conventional design. Can be customized according to user’s grid and welding technics.
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