The A350P is a fully digital AC/DC pulse TIG welder from OTC DAIHEN, featuring Welbee inverter technology. It delivers high-quality welding from ultra-thin to medium plates, with an AC frequency up to 500Hz for high-efficiency TIG welding. The built‑in welding guide function automatically matches welding conditions, and a digital interface box facilitates integration with automated systems. Rich internal functions accommodate various special process requirements, making it ideal for demanding applications.
Welbee full digital inverter technology — Precise arc control for a wide thickness range.
500Hz AC frequency — High duty cycle for efficient TIG welding.
Welding guide function — Automatically matches welding conditions, simplifying setup.
Digital interface box support — Easy integration with automation equipment.
Rich internal functions — Cleaning width adjustment, AC-DC switching, etc.
100 job memory — Secure parameter storage, easy management.
Multiple welding modes — AC TIG, DC TIG, AC stick, DC stick in one machine.
Aerospace, rail transportation, precision instruments, chemical vessels, mold making – TIG welding of aluminum alloys, magnesium alloys, titanium alloys, stainless steel, copper, and alloy steels.
| Series Name | Welbee Inverter A350P | ||||
|---|---|---|---|---|---|
| Power Source | Model | WB-A350P | |||
| Rated Input Voltage | 380V | ||||
| Phases | / | 3-phase | |||
| Rated Frequency | Hz | 50/60 | |||
| Rated Output Current (A) | A | AC TIG | DC TIG | AC Stick | DC Stick |
| 350 | 350 | 250 | 250 | ||
| Rated Power (kVA) | kVA | 12.2 (10.2kW) | 12.3 (10.8kW) | 15.6 (10.2kW) | 10.5 (9.1kW) |
| Max. No‑Load Voltage | V | 70/77 | |||
| Rated Duty Cycle | % | 40 | |||
| Rated Load Voltage (V) | V | 24 | 24 | 30 | 30 |
| Output Current Range (A) | A | 5-350 | 2-350 | 10-250 | 10-250 |
| 5-250 (soft arc mode) | |||||
| Pre‑flow Time | sec | 0-99 | / | ||
| Post‑flow Time | sec | 0-99 | / | ||
| Up‑slope Time | sec | 0-10 | / | ||
| Down‑slope Time | sec | 0-10 | / | ||
| Pulse Frequency | Hz | 0.1-999 | / | ||
| Pulse Width | % | 50 (5-95% settable in F function) | / | ||
| AC Frequency | Hz | 30-500 | / | 50 or 60 | / |
| Cleaning Width Adjustment | % | -20~20 (electrode positive ratio 10-50%) | / | ||
| AC-DC Switching Frequency | Hz | 0.1-50 | / | ||
| Automatic Crater Control | [On][Off][Repeat] selectable | / | |||
| Spot Weld Time | sec | 0.1~10 | / | ||
| Weld Condition Memory | 100 | ||||
| Dimensions (W×D×H) | mm | 395×710×640 (without eyebolt) | |||
| Weight | kg | 56 | |||
| Arc Starting Method | HF start / Touch start | / | |||
We are an authorized distributor of OTC DAIHEN welding equipment, supplying genuine machines and spare parts. For inquiries about the A350P or any OTC parts, please contact us:
📞 Tel / WeChat / WhatsApp: +86 180-9663-1656
📧 Email: ahojotc@gmail.com
Over 10 years in welding automation — 7×12 hours online, add our WeChat for technical exchange.
Company: COMPANY:Authorized Distributor of OTC Daihen
Contact person: Contact:Mr.Fang
Mobile phone: Phone:+86-18096631656
Email address: Email:15305667776@163.com
Address: Add:Room 11-704, K Xijia, No. 502, Wangjiang West Road, Hefei, Anhui, China