RSN7 Manual Drawn Arc Stud Welders
The RSN7-2000S and RSN7-2500S manual-operation stud welding machines feature IGBT inverter control for heavy-duty drawn arc welding on structural steel. Across the series, they support stud diameters from Ø3 to Ø25 mm and welding currents up to 2,500 A.
RSN7 Manual Withdrawal Inverter Stud Welder Models
RSN7-2000S vs RSN7-2500S: Stud Welder Specifications
Compare the RSN7-2000S and RSN7-2500S manual withdrawal inverter stud welders. Both are three-phase, IGBT-based machines for drawn arc stud welding on structural steel. The specifications below highlight welding capacity, rated input requirements, and model differences to help you select equipment that matches your studs and site power supply.
| Model | Welding Range | Welding Current | Rated Input Capacity | Net Weight |
|---|---|---|---|---|
| RSN7-2000S | Ø3-22 mm | 200-2,000 A | 70 kW | 78 kg |
| RSN7-2500S | Ø3-25 mm | 200-2,500 A | 85 kW | 80 kg |
Both models feature adjustable welding times from 0.1 to 3.0 seconds, a standard three-phase 380 V ±15% input, and IP23 protection. Customized input voltages, including 415 V and 440 V, are available upon request. Please confirm your power supply requirements before ordering.
Which RSN7 Manual Withdrawal Stud Welder Should You Choose?
Choose the RSN7-2000S for stud welding applications up to Ø22 mm and 2,000 A. For larger studs up to Ø25 mm or higher current requirements, consider the RSN7-2500S. Before ordering, confirm the stud material, base metal thickness, three-phase power supply, and welding gun compatibility to ensure the right configuration for your project.
RSN7 Manual Withdrawal Inverter Stud Welder Features
IGBT Inverter Efficiency
IGBT soft-switching technology delivers adjustable welding output for heavy-duty stud welding and aims to reduce energy consumption compared with thyristor-based equipment.
Precision Welding Control
Stepless adjustment of welding current and time, combined with digital parameter and input voltage displays, helps operators set suitable conditions for different stud diameters.
Grid Voltage Compensation
Built-in voltage compensation helps maintain welding stability when the input supply fluctuates, supporting on-site work within the specified operating voltage range.
On-Demand Cooling System
The automatically controlled cooling fan runs as needed, reducing unnecessary dust and metal-particle intake while helping keep internal components cool during operation.
IP23 Industrial Protection
IP23-rated protection and treated circuit boards safeguard the machine in demanding industrial and construction environments. Additional weather protection is required outdoors.
Optional Welding Functions
The design allows provision for manual arc welding and carbon arc air gouging functions. Confirm the available configurations and required accessories before ordering.
Industrial Applications of RSN7 Manual Withdrawal Stud Welders
RSN7 manual withdrawal stud welders are designed for drawn arc stud welding in structural steel construction, bridge projects, and heavy industrial fabrication.
Structural Steel Construction
Suitable for welding studs and anchors on steel beams, columns, and embedded steel components in structural construction projects.
Bridge & Floor Slab Construction
Supports shear stud welding on suitable steel bridge members and floor structures requiring welded connectors for composite construction.
Heavy Industrial Fabrication
Supports stud welding on heavy steel assemblies in industrial equipment manufacturing, machinery fabrication, and plant construction.
Need an RSN7 Stud Welder for Your Project?
Tell us your stud diameter, base metal thickness, power supply, and project quantity. We’ll help you select the RSN7-2000S or RSN7-2500S and provide technical specifications and a quotation.
RSN7 Manual Withdrawal Stud Welder FAQs
Find answers about RSN7-2000S and RSN7-2500S welding capabilities, three-phase power requirements, compatible accessories, and industrial operating conditions.
The RSN7-2000S supports Ø3-22 mm studs with a welding current of 200–2,000 A. The RSN7-2500S extends the range to Ø3-25 mm with 200–2,500 A output, making it suitable for larger studs.
Yes. The RSN7 series can be used for welding shear studs in steel construction and bridge projects. The appropriate machine, welding gun, and welding parameters depend on the stud diameter and application requirements.
Both models use a standard three-phase AC 380 V ±15% power supply. Customized voltage configurations, including 415 V and 440 V, are available upon request. Confirm your site's electrical requirements before ordering.
The RSN7-S series is designed for drawn arc stud welding with adjustable welding times of 0.1-3.0 seconds. Short-cycle welding uses a shorter arc duration and is generally selected for applications requiring lower heat input.
Welding gun compatibility depends on the connector type, stud diameter, and welding requirements. Contact our team to confirm suitable manual stud welding guns, cables, and accessories for your RSN7 configuration.
The RSN7 series features IP23 protection and specially treated circuit boards for industrial environments. Outdoor operation requires suitable protection against rain and water exposure, along with proper electrical safety measures.