A Guide to Single Phase vs. Three Phase Generators

The global generator sales market has a value of $30.09 billion, a testament to its widespread use and importance. In Australia, this market is expected to grow at a cumulative annual growth rate (CAGR) of over 7% between 2023 and 2028.

While generators can be categorised by their fuel types, such as diesel or natural gas, they can also be divided into two main types based on their electrical composition: single phase and three phase generators.

A single phase generator is the most basic type, producing a single alternating current (AC) voltage. On the other hand, a 3 phase generator produces three separate AC voltages, with each phase shifted by 120 degrees from the others. The latter provides a more balanced distribution of power.

At Gogopower, we provide both types of generators to our industrial clients. As your trusted generator suppliers, we make the whole process from generator selection to after-sales services a breeze. Having said that, let's dive into the distinction between single phase and three phase generators.

What Is a Single Phase Generator?

A single phase generator or a single-phase alternator produces a single, alternating voltage. It is used for power generation in single-phase electric systems. In simple words, single phase generators are useful for lighter loads, such as powering a few lights and small household appliances. They are also commonly used in residential and small-scale commercial settings.

The main benefit of single phase generators is their simplicity and affordability. Since they only produce a single voltage, they have fewer components compared to three phase generators. So, they're ultimately easier to maintain.

On the downside, single phase generators are usually limited in their power capacity. They can only power smaller appliances and equipment.

What Is a Three Phase Generator?

A 3 phase generator produces three alternating currents, each of which is of a different phase. All three phases are offset by 120 degrees or one-third of the cycle length. These generators are used in three-phase electric systems, commonly seen in industrial and commercial settings, including factories, warehouses, microgrids, and large office buildings.

Three phase generators are more efficient and durable compared to their single phase counterparts. Plus, they provide almost 1.5x the power output of a single phase generator.

However, three phase generators are also more complex and expensive. Plus, they need more maintenance.

Key Differences Between Single Phase and Three Phase Generators

There are some significant features that set single phase generators apart from three phase ones. Here are the key differences between the two types of generators.

Power Output and Efficiency

A 3 phase generator has a higher power output compared to a single phase generator. It produces three waves of power instead of one, resulting in more energy being delivered to the load.

Single phase generators operate on 240 volts, while three phase generators operate on 415 volts. Due to this difference, the latter handles more load. For example, the PowerLink DT250P5S generator at Gogopower, has a 415V three phase output.

Application Suitability

Since three phase generators produce more power and have a higher voltage output, they are suitable for heavy-duty applications. In an industry setting, these include:

• Powering high-load equipment like motors and conveyor belts
• Supplying power to data centres
• Operating critical systems such as elevators and air conditioning units

Single phase generators are more suitable for residential and light commercial applications, such as

• Powering hand-held tools (e.g., drills and saws) in workshops
• Maintaining security systems and cash registers in retail shops.

Cost Considerations

In terms of cost, a 3 phase generator is more expensive than a single phase generator. Besides the upfront cost, it's also more expensive to maintain and install. These costs can add up in projects where three phase generators are used in multiple locations or for extended periods.

In the long run, however, the higher efficiency and power output of a 3 phase generator can result in cost savings due to lower fuel consumption and less frequent maintenance needs.

Choosing the Right Generator for Your Industrial Business

If you're on the hunt for a generator for industrial use, here are some factors to consider before you make the choice.

Load Requirements and Future Scalability

Determine how much power you need your generator to produce, both now and in the future. Take into account potential expansions or upgrades to your business that may require more power.

You don't want to end up with a generator that is too small for your current needs or one that cannot accommodate future growth.

Type of Machinery and Equipment Use

Do you use hand-held or small power tools? Or do you have larger, high-powered equipment that requires a lot of electricity?

The type of machinery will determine the generator type best suited for your needs. As a rule of thumb, smaller power tools can be powered by a single phase generator, while larger equipment will require a 3 phase generator.

Power Reliability and Safety Concerns

For industrial businesses, power reliability is a must. A power outage could result in significant losses. For example, in a survey, 54% of respondents said that a data centre outage costs over $100,000. That's a no-no for any business.

Look for a generator that comes with built-in safety features such as automatic shutdown in case of low oil or other malfunctions to ensure the safety of your equipment and employees. It should also have automatic transfer switch (ATS) capabilities to ensure a seamless transition from utility power to generator power.

Making such an important choice without expert assistance can be a bit tricky. Consult with experts at Gogopower to make an informed decision about the best generator for your industrial business. We provide a solution based on your requirements and budget to ensure utmost satisfaction.

Gogopower's Range of Generators

At Gogopower, we have a range of diesel generators, including single phase and three phase ones, to cater to each client's needs.

Single Phase Generators

Some examples of single phase generators at Gogopower are:

• PowerLink SDT10P5S
• Yanmar SDT10Y5S
• Kubota SDT18K5S
• Kubota SDT10K5S
• Kubota SDT23K5S

These generators work efficiently in Australian weather conditions and come with a range of features like remote start, automatic transfer switch, etc. Some safety features of Gogopower's single phase generators include a battery isolator, ATS receptacle, emergency stop switch, and oil pressure sensor.

Three Phase Generators

Gogopower also has a host of three-phase generators, including:

• Cummins DT180C5S
• PowerLink DT375P5S
• PowerLink DT110P5S
• Yanmar DT10Y5S
• Cummins DT440C5S

In addition to the features mentioned above, Gogopower's selection of three phase generators also comes with optional extras like automatic transfer switches and a service kit. The latter has all the parts required for generator servicing.

Contact Us Today

Since industrial generators become the main power source in times of an outage, you must select the best one for your operations. It helps to buy a generator from a trusted supplier that also offers expert guidance. That's what we do at Gogopower.

We have a range of diesel generators to help you find the one that ticks all your boxes. Our selection includes generators from industry leaders like PowerLink, Cummins, and Kubota.

Get a quote from our sales team for your desired single or three-phase generator.