TRANSFORMER UNIT
Product information and specifications
1. Specifications
1) Name: SEAM WELDER INVERTER SYSTEM
2) General specifications
| Item | Specification | Remarks | |||
| Input | Input voltage | V | 440 (±10%) | ||
| Phase | Φ | 3 | |||
| Frequency | Hz | 50/60 | |||
| Capacity | kVA | 300 | |||
| Output | Peak current | kA | 30 | ||
| Load voltage | V | 2–3 | |||
| Load current | A | 3,000–30,000 | |||
| No-load voltage | V | 15–18 | |||
| Duty cycle | 30 s / 5 min | Ambient 25 °C | |||
| Power device control | Frequency | kHz | 1.6 | ||
| Duty | % | 10–80 | |||
| Interface | Control signals | Analog | mA | 4–20 | Output current command |
| ON | Start | Contact signal | |||
| OFF | Stop | Contact signal | |||
| Status outputs | Analog | mA | 4–20 | Output current indication | |
| Ready | Operating status | External contact | |||
| Error | Fault status | External contact | |||
3) Details by section
◆ Rectifier section
- Uses SCRs with phase control for a soft-start function.
- Suppresses inrush current, allowing a smaller and lighter product.
◆ Inverter section
- Uses fast-switching IGBTs for quick control response.
- High-voltage-rated devices improve product safety.
◆ Control section
- A high-speed microprocessor provides fast control.
| CONVERTER-PANEL | INVERTER-PANEL | RECTIFIER-UNIT | TRANSFORMER UNIT |
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