Cummins NTA Series 250kVA-450kVA Open Frame Diesel Generator for Commercial Complexes & Office Backup

Product Overview

The WOPUSAI Cummins NTA series 250kVA diesel generator set adopts genuine Chongqing Cummins NTA855‑GA inline 6‑cylinder water-cooled heavy-duty industrial diesel engine, matched with Foshan Stanford TFW‑200 brushless all-copper synchronous alternator. This classic high-reliability open-frame genset delivers steady prime power and dependable emergency backup power for industrial and commercial power demands. Equipped with turbocharged intercooled intake and proven PT direct injection fuel system, this unit has abundant power reserve, excellent resistance to sudden load surges and consistent performance during long continuous running. Its optimized open-frame layout leaves plenty of room for modification, making it well-suited for medium & large factories, hospital campuses, commercial complexes, construction sites, industrial parks and mining backup power stations.

Product Showcase

Complete open-frame genset assembly, genuine Cummins NTA855-GA diesel engine unit, TFW brushless all-copper alternator, industrial-grade intelligent control cabinet, complete piping assembly and heavy-duty high-efficiency water cooling radiator.

Key Specifications

Core Advantages

1. Genuine Cummins NTA855‑GA Classic Heavy‑Duty Powertrain The NTA855-GA 14L inline six-cylinder engine is a well-proven power unit built by Chongqing Cummins, calibrated specially for generator working conditions. It comes with generous power reserve and outstanding overload tolerance. Reinforced cast iron cylinder block and integrated steel crankshaft resist mechanical fatigue to sustain long-duration full-load operation. Mature PT direct injection fuel system enables full combustion, low failure rate and stable power output, fully backed by Cummins worldwide spare parts supply and aftersales network.
2. High‑reliability TFW Brushless All‑Copper Alternator Brushless excitation eliminates carbon brush wear and related breakdown risks, cutting daily maintenance workload for round-the-clock power supply projects. 100% pure copper winding provides superior heat dissipation and strong voltage stability. Built-in high-precision AVR automatic voltage regulator stabilizes output voltage, protecting precision medical instruments, industrial production lines and commercial power facilities. H-class insulation and IP23 protection grade support stable running in dusty, humid and complicated outdoor working environments.
3. Precise Electronic Speed Control System Fitted with high-sensitivity electronic governor, the unit quickly responds to abrupt load fluctuations to maintain steady rotation speed and constant output frequency. Optimized fuel injection design reduces carbon buildup and fuel consumption, extending engine overhaul intervals. Standard DC24V heavy-duty electric starting system guarantees reliable cold startup performance under low-temperature and high-altitude environments.
4. Heavy‑duty Welded Base & Humanized Maintenance Design High-strength integrated welded base bears the full unit weight and effectively absorbs operating vibration to keep overall stability. Oil filling ports, filter replacement positions and daily inspection hatches are laid out reasonably for convenient on-site inspection, servicing and parts replacement. Each genset undergoes strict full-load aging test before shipment to verify all mechanical and electrical performance indicators.
5. Flexible Expandability For Multiple Scenarios Standard open-frame design reserves enough installation room for auxiliary accessories. It can be equipped with silent canopy, container sound insulation housing, ATS automatic transfer cabinet, multi-unit parallel cabinet and remote cloud monitoring system, meeting diverse power supply requirements for industrial manufacturing, commercial emergency backup and engineering construction projects.

🎯 Application Scenarios

‑ Medium and large manufacturing factories, industrial production base standby power supply

‑ Comprehensive hospital clusters, medical institutions emergency backup power

‑ Large commercial complexes, shopping malls, office buildings power guarantee

‑ Construction sites, mining zones, remote engineering field temporary power supply ‑ Industrial parks, municipal key projects, off-grid area central power stations

⚙️ Optional & Customization

‑ Silent canopy / container‑type sound‑insulated enclosure

‑ ATS automatic transfer switch for auto‑start & mains‑failure auto‑switch

‑ Multi‑protection intelligent control cabinet, remote cloud monitoring module

‑ Large‑capacity extended fuel tank, cold‑region preheating device

‑ Generator parallel cabinet for multi‑genset parallel operation system

📦 Packaging Standards

Export‑grade heavy‑duty iron frame packaging, anti‑rust coating for metal surfaces. Complete operation manual, spare‑parts kit are included inside the package.

🚛 Shipping & Delivery

Support full container and LCL transportation. Available for FOB, CIF and other international trade terms. Production lead‑time subject to order quantity, negotiable delivery schedule for bulk orders.

🏢 Brand Introduction

WOPUSAI Mechanical and Electrical

WOPUSAI focuses on R&D, assembly and global supply of industrial diesel generator sets. We maintain long‑term strategic cooperation with Cummins, Shangchai Power, Yuchai and other well‑known engine manufacturers. Our product portfolio ranges from small portable gensets to large‑scale heavy‑duty industrial power equipment. Strict quality inspection runs through every production procedure. We provide worldwide customers with full‑set solutions covering model‑selection guidance, technical consultation and after‑sales support.

Introduction of Cummins Engine

Cummins is a world‑renowned internal‑combustion engine manufacturer. The NTA855‑GA series engine is a classic mature power product of Chongqing Cummins, featuring stable performance, strong durability and low failure rate. With a global complete spare parts supply system and professional after‑sales service network, it is widely recognized as a preferred power solution for medium and large industrial generator set projects worldwide.