Three Phase Generators (400V)

Standby and prime power for data centres, hospitals, manufacturing and process-critical sites across the South. Supplied, installed, commissioned and maintained by our own engineers.

  • Turnkey supply, installation & commissioning
  • On-site load bank testing & compliance
  • Rapid emergency response & planned maintenance
Get a quote in 24 hours
Tell us your application and we'll come back with sizing advice and a price — usually same working day.
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Why Specify Solent Power

One team, from sizing to standby

We don't just sell the set. We size it to your load, install and commission it, prove it under load, and keep it running — so accountability sits in one place.
Turnkey Delivery
Supply, mechanical & electrical install, fuel systems and commissioning handled inhouse.
Load bank tested
On-site resistive load bank testing to verify performance and meet compliance requirements.
Rapid Response
Field engineers on call for breakdowns and emergency temporary power when you can't be down.
Planned Maintenance
Service contracts and UPS support to keep critical power resilient year-round.
Diesel Generators for any application

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A selection from our range of Three Phase Generators (400V). Not sure which suits your load profile? Send the form above and an engineer will recommend the right unit.
Sizing help

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NEED?

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Three Phase Generators

Three-phase generators are a popular solution for homes and businesses. With their ability to provide prime and backup power for medium to large-scale operations, investing in a three-phase diesel generator can give you peace of mind.

Solent Power is an authorised distributor of three-phase generators. We stock a range of models from reputable manufacturers. Whether you’re looking for a 100kVA model or need something more powerful, we’re here to help.

What is a three-phase generator?

Three-phase generators create alternating currents evenly spaced out in terms of their phase angles. Their unique design ensures a steady flow of power, making them ideal for powering large-scale operations such as factories and offices.

Smaller models, like 30kVA generators, mean you can generate prime power for smaller retailers and residential properties. In contrast to single-phase systems, three-phase setups are much more efficient and have no trouble dealing with heavy loads.

CAT Diesel Generator supplied and installed by Solent Power UK

The benefits of 3 Phase Generators:

  • Efficiency: Three-phase generators can generate and transmit power more efficiently than single-phase models. Choosing diesel generators means you can save money on fuel and protect the environment.
  • Power Generation: Nobody wants a generator that lets them down, and three-phase models are more reliable than single-phase generators. They provide a continuous flow of electricity, and many come with an automatic transfer switch for a smooth transition.
  • Smaller Cables: You can save money on cables in many cases, as the generator’s load is distributed across three phases.
  • Powerful Applications: These generators are ideal for powering industrial applications that rely on heavy-duty equipment. They also suit agricultural settings and large homes.

What size generator do I need with 3 phase?

The size you’ll need depends on whether you need to power larger buildings, use industrial equipment and how often you’ll use a generator. While it might seem smart to buy a high-capacity model, it could cause damage to your equipment.

When calculating generator size, we recommend making a list of the devices you’ll be powering and adding 10-20% to that. For example, if your equipment needs 100kVA, opt for a maximum 110kVA generator.

If you need help, please contact our friendly generator sales team today.

Find the perfect three-phase generator for your needs

Solent Power offers a range of three-phase generators in all capacities from the most reputable manufacturers. We stock generators from CAT, Himoinsa, Perkins, and many more companies. With excellent prices and a dedicated installation team, choosing us gives you a stress-free experience.

Please enquire about our generator maintenance service and ensure your investment lasts for years to come,

Yanmar Generator Himoinsa 25kVA

Is a 3-phase generator better than a single-phase?

That depends on what you’re using the generator for, but three-phase models definitely outperform single-phase generators.

So, if you need to power commercial, industrial equipment or a large residential home, we recommend a three-phase diesel generator, but single-phase models are beneficial for smaller homes or businesses without much equipment.

Ultimately, it depends on your unique needs, but a single-phase generator might not provide enough power for your facility.

How to tell if a generator is 3-phase?

When figuring out if a generator is 3-phase, take a look at how many output terminals it has. Most 3-phase generators will have four terminals: three live (or hot) wires and one neutral wire. You can also check the specification plate, which often lists whether the generator is single or three phase.

The wiring is another clear clue, as the three separate phases are easy to spot.

Can you change 3-phase to single-phase?

While it’s possible to convert a three-phase generator to a single-phase model by either reconfiguring the wiring or using a phase converter, doing this means you can only receive a third of the generator’s total capacity.

Consider whether it works out better to purchase a new or used diesel generator instead of getting a professional to convert your current model.

 

Should I have a single-phase or three-phase generator?

That depends on your unique needs. Three-phase generators are best if you have heavy-duty equipment or are powering an industrial or commercial setting.

You’ll need to assess your home when shopping for a residential generator, as the size directly impacts whether a single-phase or three-phase model is enough.

Does a 3-phase generator have a neutral?

Most three-phase generators have a neutral wire, which balances the current and allows for the connection of single-phase loads.

How do you get 3-phase power to your house?

If you want to get 3-phase power to your house, contact your utility company and see if it’s available in your area. If it is, they’ll give you a quote, and you can search for a reliable electrician to make any upgrades.

There’s usually a bit of paperwork involved, like getting permits, and your local authorities will usually inspect the work. After that’s all sorted, the utility company will come out and handle the actual installation and connection of the 3-phase power to your home.

Get your Three Phase Generators (400V) quote

Tell us your load and timescale — we'll come back with the right set and a price, usually the same working day.

Solent Power Ltd (Company Number 12622565) is a company registered in England and Wales. Our registered office is located at Station yard, Bowes Hill, Rowlands Castle PO9 6BP. VAT No. 363504018

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