Yuchai 4D Series Open Frame Heavy Duty Diesel Generator Standby Power 50kVA - 63kVA
| Voltage: | 220V/380V/400V (depending On Model) | Coolingsystem: | Water-cooled |
| Voltage Options: | 220V, 380V, 400V | Weight Range: | 500kg To 5000kg |
| Control Panel: | Automatic Control Panel | Voltage Regulator: | Automatic Voltage Regulator (AVR) |
| Starting System: | Electric Start | Power Range: | 10kW To 2,400kW |
| Phase: | Single-phase/Three-phase | Weight: | 500kg To 5000kg |
| Power Output Range: | 10kW To 2000kW | Productname: | Yuchai Generator Set |
| Cooling System: | 40℃ Standard Water Cooling Cycle | ||
| High Light: | Open Frame Heavy Duty Diesel Generator,Heavy Duty Diesel Generator 50kVA,Standby Power Diesel Generator 63kVA |
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Yuchai 4D Series 50kVA-63kVA Open Frame Heavy-Duty Diesel Generator, Standby Power for Outdoor Operations
Product Overview
The WOPUSAI Yuchai 4D85Z-D20 63kVA diesel generator set adopts genuine Yuchai 4D series diesel engine matched with STC series brush‑type self‑excitation alternator. Designed for medium‑size standby and prime power supply scenarios, this unit delivers steady output under continuous working conditions. It features compact layout, easy maintenance and outstanding cost‑performance, widely deployed for commercial buildings, small factories and remote site power supply. The whole unit passes strict factory testing to guarantee stable performance under variable load conditions.
Product Showcase
Complete open‑type genset, supporting optional silent canopy, mobile trailer, ATS automatic transfer switch for automatic emergency power switching.

Key Specifications
63kVA 4D series Yuchai six-cylinder open frame unit |
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| Rated power | 50KW / 63kVA |
| Rated current | 90A |
| Rated voltage | 400V/230V |
| Rated frequency | 50Hz |
| Rated speed | 1500rpm |
| Fuel consumption | 220g/KW.h |
| Dimensions | 1750*650*1250mm |
| Unit weight | 1000KG |
| Noise index | 100dB |
| Model | 4D85Z-D20 |
| Number of cylinders | 4L |
| Bore stroke | 108*115mm |
| Exhaust volume | 4.2L |
| Starting method | DC 24V DC start |
| Cooling method | 40℃ standard water cooling cycle |
| Oil supply method | Direct injection |
| Debugging method | Mechanical speed regulation |
| Air intake method | Turbocharging |
| Generator configuration | Brush self-excitation |
| Brand/Model | STC-50 |
| Rated power | 50KW/ 63kVA |
| Insulation level | E |
| Protection level | IP 22 |
| Wiring method | Star connection |
| Adjustment method | AVR automatic voltage regulation |
| Power Factor | 0.8 lag |
Core Advantages
- Genuine Yuchai 4D Power Core: Turbocharged 4‑cylinder direct‑injection engine brings reliable power output, good fuel‑saving performance, strong adaptability to different climate environments.
- STC Brush‑type Self‑excitation Alternator: Mature and proven brush‑type generating unit, easy for on‑site inspection and component replacement, low spare‑parts cost for long‑term operation.
- Simple Mechanical Governing Structure: Less electronic components, high anti‑interference capability, suitable for sites without stable technical support.
- Compact Open‑frame Structure: Save installation space; all routine service points are externally accessible for fast oil, filter maintenance.
- Strict Factory Full‑load Test: Every finished unit undergoes load running‑in test before delivery to reduce on‑site failure risk.
🎯 Application Scenarios
Small manufacturing workshops, commercial complexes, construction sites, farm irrigation projects, remote mountain area power supply, backup power for office buildings, small‑scale emergency rescue.
⚙️ Optional & Customization
- Silent sound‑proof canopy / mobile trailer chassis
- ATS automatic transfer switch for auto start‑stop upon mains failure
- Deep sea / HGM series control panel, four‑protection control box
- Extended fuel tank, remote monitoring module
- Custom painting color, special‑grade filter set for dusty environment
📦 Packaging Standards
Standard export plywood case or iron frame packing; key spare parts including filter elements, tools and operation manual are included inside package.
🚛 Shipping & Delivery
Support FOB, CIF, DAP trade terms. Goods can be delivered by sea freight or land trucking. Lead time 7‑15 working days after deposit confirmed.
🏢 Brand Introduction
WOPUSAI Mechanical and Electrical focuses on R&D, assembly and sales of diesel / gasoline generator sets and related power accessories. We cooperate with well‑known domestic engine brands such as Yuchai, Shangchai. All products comply with CE, ISO quality standards. We provide one‑stop solution including unit matching, technical guidance and after‑sales support for global B2B buyers.
