WOPUSAI 4100 Series 50kVA Open Frame Diesel Generator, Emergency Standby for Small Farms

Product Overview

The WOPUSAI 4100 series 50kVA diesel generator set is equipped with HZ4105ZD four-cylinder diesel engine, matched with STC brushed self-excited alternator. This mid-range open-frame genset adopts turbocharged power structure, designed for continuous standby power and medium-duty prime power supply. With reliable mechanical speed regulation and direct injection fuel system, it delivers stable power output and strong overload capacity. It is a cost-effective power solution for small factories, construction sites, commercial buildings and various emergency backup power projects.

Product Showcase

Complete open-frame genset assembly, WOPUSAI 4100 series diesel engine unit, STC brushed self-excited all-copper alternator, industrial-grade control cabinet, complete piping assembly and heavy-duty high-capacity water cooling radiator. 

Key Specifications

Core Advantages

✅ Turbocharged 4-Cylinder Engine: HZ4105ZD four-cylinder turbocharged engine provides ample power reserve. Compared with naturally aspirated models, it has stronger load capacity and stable performance during long-time continuous operation.

✅ STC Brushed Self-Excited Alternator: Full copper winding with AVR automatic voltage regulator. Fast voltage build-up and stable power output. The brushed design brings simple structure, easy inspection and convenient on-site maintenance.

✅ Mature Mechanical Speed Governing System: Mechanical governor with fewer electronic components, strong anti-interference ability. It can run steadily in dusty and harsh construction environments, reducing breakdown risks.

✅ Optimized Compact Structure: Moderate size and weight for convenient transportation and field installation. It saves space while maintaining sufficient power performance for medium-load working requirements.

✅ IP22 Protection Grade: Effectively blocks solid foreign objects and splashing water, suitable for open type installation in workshops, construction yards and backup power rooms.

🎯 Application Scenarios

Small and medium factory standby power, construction site temporary power supply, rural power grid backup, commercial shops emergency power, water pumping stations, small mining auxiliary power, logistics warehouse backup power. Suitable for medium-load and long-duration power supply demands.

⚙️ Optional & Customization

• Silent canopy / Mobile trailer chassis
• ATS automatic transfer switch for automatic startup once mains power fails
• Multi-protection control system (overspeed, high temperature, low oil pressure, overcurrent protection)
• Extended base fuel tank, remote monitoring module
• Custom painting and brand logo printing

📦 Packaging Standards

Standard export steel frame packing with shockproof fixing, protect engine and alternator against collision during long-distance sea and land transportation. Export plywood case is also available upon request.

🚛 Shipping & Delivery

We support FOB, CIF, DDP and other international trade terms. Goods can be delivered within 7-15 working days after receiving deposit. Packing list, commercial invoice and full set of factory test reports will be supplied for customs clearance.

🏢 Brand Introduction

Wopusai Mechanical and Electrical is a professional manufacturer integrating R&D, production and sales of diesel generator sets. We provide complete power solution including genset, spare parts and after-sales maintenance. Every unit will pass strict factory load test before delivery. We supply high-performance generator products to global customers, with 24/7 technical support and worldwide after-sales service.