How many kW can a 100 kVA transformer handle?

What’s the Difference Between kVA and kW?

In electrical systems, kVA (kilovolt-amperes) represents apparent power, while kW (kilowatts) stands for real or active power. The key difference lies in the power factor, which reflects the efficiency of energy conversion. This factor is crucial, especially in systems with inductive loads.

How to Convert 100 kVA to kW?

The basic formula to convert kVA to kW is:

kW = kVA × Power Factor

For a typical power factor of 0.8, a 100 kVA transformer would handle:

100 × 0.8 = 80 kW

So, under normal conditions, a 100 kVA transformer can deliver up to 80 kW of real power.

Does Phase Type Affect Capacity?

While the formula is consistent for both single-phase and three-phase transformers, the application context differs:

• Single-phase transformers: Suitable for light loads and residential uses.

• Three-phase transformers: Common in industrial settings and better suited for high-power loads.

Other Factors to Consider

When choosing a transformer, consider more than just the power rating:

• Voltage compatibility with your load

• Ambient operating temperature

• Surge currents during equipment startup

• Continuous vs. intermittent load profiles

Summary

A 100 kVA transformer can typically support up to 80 kW of load at a 0.8 power factor. However, to ensure safety and longevity, you should evaluate environmental factors and load behavior when selecting a transformer.

If you are looking to purchase transformers, feel free to contact us. We are a professional transformer sales and service company capable of supporting a wide range of industry applications. Contact us to get a customized product quote.