120A-400A Welding Current Silent Diesel Welding Generator with DC Weld

Product Overview

NEWLAND SEWI series silent diesel welding generator integrates an inverter DC welding module with a fully enclosed soundproof canopy. It delivers both AC power and DC welding current from 120A to 400A, supporting electrodes up to 10mm. Rated output ranges from 2.8kW to 16kW depending on model and frequency (50/60Hz). The silent canopy features high-density sound-absorbing foam and fire-resistant lining, significantly reducing operational noise for use in noise-sensitive areas like residential zones, campsites, and night shifts. Optional configurations include electric start, remote control, ATS, and preheating.

Bulk Wholesale & OEM Advantages (For B2B Buyers)

We offer complete supply solutions for NEWLAND SEWI series silent diesel welding generator wholesalers:

• Accept sample trial orders and large-volume bulk purchases with competitive manufacturer price

• OEM/ODM customization available: logo, canopy color, packaging, and feature add-ons (remote start,  intake air heating, dual voltage, emergency stop)

• Stable manufacturing capacity with serial number traceability and test records per unit available

• Full after-sales support including documentation, troubleshooting guidance, and spare parts supply

• Professional marketing content and technical sheets to help distributors promote diesel welding generators effectively

  Product Advantages

  Quiet Operation for Noise-Sensitive Work
  The soundproof canopy uses one-piece stamping with precision welding, high-density sound-absorbing foam, and fire-resistant cotton lining. Improved air duct design balances cooling airflow and noise reduction. Compared to open-frame welders, the SEWI series significantly lowers operational noise, making it suitable for night work, residential-area maintenance, and campground power supply.

  Inverter Welding Module for Stable Arc
  The inverter DC welding system provides consistent current from 120A to 400A with a smooth arc suitable for stick welding electrodes up to 10mm. Inverter technology reduces current ripple and improves welding controllability compared to conventional generator welders, allowing cleaner weld beads and easier operation for site repairs, structural welding, and pipe work.

  Durable Diesel Engine with Long Service Life
  Forged steel crankshaft comes with lifetime warranty (free replacement if broken). Main bearings from NSK or BANDUN, WEIFU fuel injection system, and high-strength housing with 12.9 grade bolts ensure long-term reliability. Each engine is independently tuned for injection angle and compression ratio, with recorded test data. Service life is approximately three times longer than same-power petrol generators.

  Strong Alternator for Motor-Driven Equipment
  Self-excited brushed alternator with AVR delivers stable voltage and handles high starting currents for inductive loads. Cold-rolled silicon steel sheets and oil-painted copper windings provide good insulation and low temperature rise. Extended carbon brushes (1.4 times normal life) reduce maintenance frequency. Direct coupling between engine and alternator minimizes power transmission loss.

  Safety and Protection Features
  Low oil shutdown with red LED indicator protects the engine from damage. DELIXI circuit breakers provide reliable overload protection with over 10,000 mechanical cycles. Optional HJ501/502 intelligent control allows users to set safety limits for voltage, frequency, and engine speed, with automatic shutdown on abnormal conditions. All sockets and connectors meet international standards with flame-retardant materials

The SEWI series silent diesel welding generator is intended for combined power generation and welding tasks where noise reduction is important:

• Night-time construction and emergency repairs

• Maintenance work in residential areas or near downtwon

• Telecom tower backup power with on-site welding capability

• Rental equipment fleet for noise-regulated job sites

It serves B2B buyers supplying urban construction, infrastructure maintenance, and equipment rental markets with noise compliance requirements.

FAQ About SEWI Series Silent Diesel Welding Generator

What is the minimum order quantity for the SEWI series silent diesel welding generator?
Usually 10units. MOQ is flexible, please discuss with us, we are fully supportive to help our customers to test the market first.

Can I customize the silent canopy color or add my logo?
Yes. OEM/ODM services include logo printing, canopy color matching, custom packaging, and optional features such as remote control, intake air preheating, and equal power.

Does the welding performance differ between SEWI and WI series?
No. Both series use the same inverter DC welding module. The only major difference is the canopy: open-frame (WI) for better cooling and lower cost, silent (SEWI) for reduced noise. Welding current range and electrode support are identical.

What certification documents can you provide for customs clearance?
We can provide CE certificates, Euro 5 reports (for applicable engine models), RoHS, EMC, and noise test reports. All documentation is ready to support B2B imports.