64kW vs 80kVA Perkins Diesel Generators: Which Suits You?

24, Oct. 2025

 

When considering diesel generators for your power needs, a common dilemma arises: should you choose a 64kW or an 80kVA Perkins diesel generator? Both options have their strengths, and understanding the differences can help you make the right decision.

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1. What is the difference between kW and kVA?

The primary difference lies in how these units measure electrical power and the nature of the loads they support. Kilowatts (kW) measure real power, which is the power consumed by devices to perform work. Kilovolt-amperes (kVA), on the other hand, measure apparent power, which includes both working power (kW) and reactive power, often found in inductive loads such as motors and transformers.

2. How do 64kW and 80kVA relate to each other?

When comparing a 64kW generator to an 80kVA generator, it’s crucial to consider the power factor, which typically is around 0.8 for Perkins generators. This means:

  1. 64kW is roughly equivalent to 80kVA (since 80kVA * 0.8 = 64kW).
  2. The 64kW generator is optimized for providing real power, suitable for applications that primarily use active power.
  3. The 80kVA generator, however, offers extra capacity to handle reactive loads, making it more versatile for different applications.

3. Which generator should I choose for my needs?

Your choice between the 64kW and 80kVA Perkins diesel generator set depends on your specific power requirements. Here are some factors to consider:

  1. Type of Load:
    • If your load is mainly resistive (like heating systems), a 64kW generator will usually suffice.
    • If your load is inductive (like motors and transformers), consider the 80kVA unit for its ability to handle reactive power.
  2. Future Expansion:
    • If you plan to expand your power needs in the future, opting for the 80kVA generator may provide the flexibility you need.
  3. Location and Mobility:
    • Consider the space where the generator will be installed or stored. Some sites may put size limitations, influencing your choice.

4. What are the advantages of using Perkins generators?

Perkins diesel generators are widely recognized for their reliability and efficiency. Some key advantages include:

  1. High fuel efficiency, which translates to reduced running costs over time.
  2. Compact design, making them suitable for limited space situations.
  3. Durable construction, ensuring prolonged service life with minimal maintenance.

5. What should I consider before making a purchase?

Before purchasing a 64kW or 80kVA Perkins diesel generator set, consider the following:

  1. Your total power requirements based on all devices you plan to connect.
  2. The duration for which you expect to run the generator on a regular basis.
  3. The availability of service and spare parts in your area for Perkins generators.
  4. Your budget, not just for the purchase but also for fuel and maintenance.

In conclusion, both the 64kW and 80kVA Perkins diesel generators have unique features tailored to different needs. Assessing your specific requirements will help you make an informed decision, ensuring you choose the best generator for your application.

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