In an era where power continuity and stability are critical to the success of operations in manufacturing, infrastructure, and services, the 500kVA alternator has emerged as a reliable, high-performance solution. With high power capacity, excellent load handling, and long operating life, this alternator type is widely adopted in factories, large buildings, data centers, airports, and other essential facilities.
Contents
1. What is a 500kVA Alternator?
1.1 Basic Overview of the 500kVA Alternator
A 500kVA alternator is the main electricity-generating component of a diesel generator set, capable of delivering approximately 400 kW of rated power. It is commonly coupled with a high-output diesel engine (such as Perkins, Volvo, Cummins, etc.) and a smart controller, forming a backup or prime power generation system.
Typical Technical Specifications:
Specification | Typical Value |
---|---|
Rated Power | 500 kVA / 400 kW |
Voltage | 400V – 3 Phase – 50Hz |
Power Factor | 0.8 lagging |
Speed | 1500 RPM |
Cooling Method | Air-cooled or hybrid air-oil |
1.2 Popular Alternator Brands for 500kVA Capacity
Mecc Alte (Italy)
Country: Italy
Founded: 1947
Headquarters: Creazzo, Vicenza
Specialization: Alternators from 1 kVA to 5000 kVA
Highlights:
Compact design, high efficiency
Stable output for industrial and electronic loads
Advanced cooling system and premium AVR
Common applications: Industrial gensets, marine, military, healthcare, cruise ships
Stamford (UK)
Country: United Kingdom
Established: 1904 (now part of Cummins Generator Technologies)
Headquarters: Stamford, Lincolnshire
Specialization: Alternators from 7.5 kVA to over 3000 kVA
Highlights:
High durability and load endurance
Easy integration with common diesel engines
Modern manufacturing and strict quality control
Applications: Data centers, telecoms, commercial buildings, premium residential projects
Leroy Somer (France)
Country: France
Founded: 1919
Now Owned by: Nidec Group (Japan) since 2017
Headquarters: Angoulême, France
Specialization: High-end electric motors and alternators
Highlights:
Strong reputation in Europe and the US
Excellent voltage stability (minimal waveform distortion)
Wide product range from low to medium voltage
Applications: Emergency power systems, industrial plants, aerospace, and defense
Marathon Electric (USA)
Country: USA
Founded: 1913
Headquarters: Wausau, Wisconsin
Part of: Regal Rexnord Corporation
Specialization: Alternators and electric motors
Highlights:
Expertise in high-power, high-efficiency alternators
Engineered for harsh operating environments
Strong technical support across North America and Asia
Applications: Cement plants, refineries, heavy industry, renewable energy
2. Compatible Engines for a 500kVA Alternator
To deliver optimal performance, a 500kVA alternator requires a diesel engine with adequate power, stable operation, and fuel efficiency. One of the most commonly paired engines is:
Volvo Penta TAD1346GE
6-cylinder inline diesel engine
12.8L displacement, made in Sweden
Often paired with Mecc Alte alternators for superior efficiency and low fuel consumption
Key benefits:
Fast start-up
Low vibration and noise
Easy maintenance with spare parts readily available in Vietnam
Other suitable engine models include:
Perkins 2506A-E15TAG1 or TAG2
Cummins QSX15-G9
Doosan P222LE
Mitsubishi S6R2 (for reference)
See more: Italy Alternator Compact 33cm, Powerful 30kVA
See more: The 1000kVA alternator is the heart of industrial power systems
3. Practical Applications of the 500kVA Alternator
3.1 Industrial Zones and Manufacturing Plants
Continuous power for production lines
Minimizes outage-related disruptions
Keeps automation and machinery running safely
3.2 Building Infrastructure, Hotels, and Commercial Complexes
Backup power for elevators, lighting, HVAC systems
Meets fire safety and electrical technical standards
3.3 Hospitals and Data Centers
Zero-tolerance for power loss
Works alongside UPS systems for critical backup power
Fully compatible with ATS and BMS systems
4. Advantages of Using a 500kVA Alternator
4.1 Key Benefits
Benefit | Description |
---|---|
High efficiency | Ideal for continuous operation and heavy loads |
Voltage stability | Thanks to precise AVR design |
Long operational life | 20,000+ hours with proper maintenance |
Easy integration | Compatible with automation, ATS, and remote control |
4.2 Suggested Genset Configuration with 500kVA Alternator
Component | Recommended Option |
---|---|
Engine | Volvo Penta TAD1346GE / Perkins 2506C / Cummins QSX15 |
Alternator | Mecc Alte / Stamford / Leroy Somer |
Controller | GC315 / DSE7320 |
Soundproof Enclosure | 75 dBA noise standard |
Fuel Tank | 600 – 1000L integrated base tank |
Protection System | Overload, low voltage, over-temp, phase loss, overspeed |
Expert Tips for Choosing a 500kVA Alternator
Choose brands with CE, ISO, and IEC certifications
Check for after-sales technical support availability
Request clear CO and CQ documents from suppliers
Prefer alternators with <2% voltage dip under sudden load
Determine whether it’s for standby or prime use to match engine-alternator configuration
Company name:
TTTT GLOBAL co Ltd,.
- Address: Landmark 4 Building, Vinhomes Central Park, 720A Dien Bien Phu Str, Ward 22, Binh Thanh District, Ho Chi Minh City, Vietnam.
- Website: https://ttttglobal.com/en/
- Hotline: +84286 2728 334
- Email: Info@ttttglobal.com