20kVA Diesel Perkins Generator Set for Retail Shops & Small Business Standby Power
| Fueltankcapacity: | Customized On Demand | Breaker Capacity: | 800A |
| Exciation System: | Self Excitation | Produce Name: | Diesel Generator Set |
| Phase And Wires: | 3 Phase 4 Wires | Startingsystem: | Electric Start |
| Controlpanel: | Digital Control Panel With Monitoring | Starting System: | Electric |
| Governor: | Electric | Voltage: | 230V / 400V |
| Power Factor: | 0.8 Lag | ||
| High Light: | 20kVA Perkins Generator Set,Retail Shops Perkins Generator Set,Small Business Perkins Diesel Generator |
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Perkins 20kVA Diesel Generator for Retail Shops & Small Business Standby Power
Product Overview
WOPUSAI Perkins 20kVA open-frame diesel generator set is fitted with authentic UK Perkins 4-cylinder compact diesel engine, paired with TFW brushless all-copper alternator. This mid-small power genset balances power output and compact size, ideal for medium load standby power. It offers stable power output, strong load tolerance and outstanding long-running reliability, widely adopted for small workshops, rental sites, farm facilities and medium-size commercial backup power scenarios.
Product Showcase
Complete open‑frame genset assembly, Perkins 4-cylinder compact diesel engine unit, TFW brushless all-copper alternator, industrial compact control cabinet, full piping assembly and high-efficiency water cooling radiator.

Key Specifications
15kVA‑25kVA Perkins series six-cylinder open frame unit |
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| Rated power | 15kVA | 20kVA | 25kVA |
| Rated current | 21.7A | 27A | 36A |
| Rated voltage | 400V/230V | ||
| Rated frequency | 50Hz | ||
| Rated speed | 1500rpm | ||
| Fuel consumption | 200g.KW/h | ||
| Dimensions | 1550*650*1050mm | ||
| Unit weight | 500KG | 550KG | 600KG |
| Noise index | 100dB | ||
| Model | 403A-15G2 | 404A-22G1 | 404D-22TG |
| Number of cylinders | 4L | ||
| Bore stroke | 84*94mm | 84*100mm | |
| Exhaust volume | 1.5L | 2.2L | |
| Starting method | DC 12V DC start | ||
| Cooling method | 40℃ standard water cooling cycle | ||
| Oil supply method | Direct injection | ||
| Debugging method | Electronic speed regulation | ||
| Air intake method | Inhale naturally | Turbocharging | |
| Generator configuration | Brush self-excitation | ||
| Brand/Model | TFW-10 | TFW-15 | TFW-20 |
| Rated power | 10KW | 15KW | 20KW |
| Insulation level | H | ||
| Protection level | IP 23 | ||
| Wiring method | Star connection | ||
| Adjustment method | AVR automatic voltage regulation | ||
| Power Factor | 0.8 lag | ||
Core Advantages
✅ Genuine UK Perkins 404D-15G Engine Original Perkins four-cylinder naturally aspirated engine, stable power reserve, stronger load capacity than 3-cylinder models. Simple mechanical speed control structure, stable operation, Perkins global spare parts network guarantees convenient after-sales support.
✅ TFW Brushless All-Copper Alternator All-copper brushless alternator with AVR voltage stabilizer, fast voltage recovery under sudden load change. No carbon brush maintenance, stable power for lighting, motors and workshop small processing equipment.
✅ Balanced Power & Compact Layout Optimized frame design, not bulky but with enough power margin. Shock absorption pads reduce vibration and noise, improve user experience in commercial and workshop environments.
✅ Strong Load Adaptability Can handle small inductive loads such as water pumps and small motors. Suitable for intermittent load changes, good choice for equipment with frequent startup.
✅ Low Maintenance Burden Long oil change interval, simple routine inspection items. Low operating cost for continuous standby application, reduce long-term maintenance investment.
🎯 Application Scenarios
- Small processing workshops, farm irrigation equipment power supply
- Medium retail stores, restaurants, office building emergency backup power
- Construction rental equipment, outdoor engineering small site power
- Rural water stations, medium-sized security monitoring and communication stations
⚙️ Optional & Customization
- Silent canopy / rainproof enclosure
- ATS automatic transfer switch for auto start & stop
- Extended base fuel tank
- Customized color and upgraded control panel
📦 Packaging Standards
Standard export plywood case packing, internal fixed and shockproof treatment, suitable for sea and land transportation.
🚛 Shipping & Delivery
We support FOB, CIF, DDP multiple trade terms. Goods can be shipped from China major ports. Delivery lead time depends on order quantity and optional configurations.
🏢 Brand Introduction
Wopusai Mechanical and Electrical focuses on integrated generator set assembly and power solution supply. We match world-renowned engine brands including Perkins, Shangchai, Yuchai with high-quality alternators. Strict factory testing before shipment, reliable after-sales service and global technical support for all genset products.
