Phase Technologies LLC

Phase Technologies LLC Global Headquarters:
222 Disk Drive
Rapid City, SD 57701 This was the first major advancement of phase conversion technology in decades.

Who We Are

Phase Technologies is a power electronics manufacturer located in Rapid City, South Dakota. Founded in 1999, Phase Technologies developed the world’s first digital phase converter, called the Phase Perfect® Digital Phase Converter. Recognized as the world’s leading manufacturer of phase converter technologies, the company expanded the technology into variable frequency drives (VFDs) in

the irrigation, water pumping, HVAC and oil & gas industries. Specializing in VFDs with Active Front End technology, Phase Technologies produces the only low harmonic, fully regenerative, phase-converting VFD that complies with IEEE 519, the international standard for allowable harmonic levels on utility mains. The company has an extensive product line-up of low harmonic, fully regenerative drives in both three-phase and phase-converting models. Our Story

Phase Technologies relies on a team of in-house power electronics and mechanical design engineers to develop innovative products, encompassing all aspects of hardware and firmware design. All products are manufactured at our facilities in the USA under exacting quality standards. In-house processes include printed circuit board population, wire assemblies, and our own proprietary magnetics fabrication. The company operates a certified UL 508A panel shop to integrate our drives into rugged outdoor panels with custom options for applications including irrigation, oil and gas production, and general industrial control. The custom integrations are part of the manufacturing process, not an afterthought. Integrity and honesty are the cornerstones of customer interaction at Phase Technologies. Knowledgeable sales experts are available to help customers select the right product to fit their needs, and we partner with the best distributors and dealers to make our products available with industry best lead times and local service. Typical manufacturing lead time is 3-7 business days. Experts in our customer service department are standing by to answer any technical questions and provide the support to keep your application up and running.

09/01/2026

Happy Friday! Setting a pump 120', controlled by a Phase Technologies LLC constant pressure system this morning.

08/28/2026

Phase University is where technical knowledge meets hands-on experience. ⚡

Spend three days learning alongside the Phase Technologies team as we dive into VFDs, digital phase conversion, troubleshooting, real-world applications and more.

Plus, continuing education credits are now available for well drilling professionals in select states! 🎓

Ready to take your knowledge to the next level? Learn more about Phase University and register today:
https://www.phasetechnologies.com/support/training/phase-university

Rotary phase converters require oversizing to handle the high inrush current when a motor starts. That means a 7.5 HP ma...
08/27/2026

Rotary phase converters require oversizing to handle the high inrush current when a motor starts. That means a 7.5 HP machine may require a 15 HP rotary converter, forcing you into a larger, heavier unit with more cost, more floor space, and more capacity than your equipment actually needs.
Phase Perfect® digital phase conversion eliminates that compromise. Its starting capacity allows you to size the converter to the actual load, so a 7.5 HP machine can use a 7.5 HP Phase Perfect® without doubling the converter size just to get the motor started.
You get the full rated capacity you paid for in a smaller, lighter package, along with balanced, utility-quality three-phase power.
See the difference with Phase Perfect®: https://www.phasetechnologies.com/products/phase-converters/phase-perfect/industrial

Phase Technologies is headed to @@iwfatlanta Stop by to see us and learn how Phase Perfect® provides reliable three-phas...
08/25/2026

Phase Technologies is headed to @@iwfatlanta

Stop by to see us and learn how Phase Perfect® provides reliable three-phase power for woodworking equipment, CNC machines, and more.

📍 Georgia World Congress Center | Atlanta, GA
📅 August 25–28

We’ll see you at IWF!

We’re headed to Wichita for the Kansas Independent Oil and Gas Association Annual Convention! Stop by **Booth #215 to ...
08/24/2026

We’re headed to Wichita for the Kansas Independent Oil and Gas Association Annual Convention!

Stop by **Booth #215 to meet the Phase Technologies team and learn more about our solutions for the oil & gas industry.

📍 Century II Performing Arts Center | Wichita, KS
📅 August 24–25

We’ll see you there!

💧 We’re headed to The Water Expo Come connect with our team and learn how Phase Technologies delivers reliable power sol...
08/11/2026

💧 We’re headed to The Water Expo

Come connect with our team and learn how Phase Technologies delivers reliable power solutions for demanding water and pumping applications.

📍 Fort Lauderdale, FL
📅 August 12–13

We’ll see you at The Water Expo!

08/08/2026

⚡American-made. Built to perform.

The Phase Technologies LLC Alpha Drive delivers reliable constant pressure while converting single-phase power to three-phase, making it a smart solution for demanding water systems.

✔️ Made in the USA
✔️ Constant pressure performance
✔️ Simple installation and setup

Built for reliability. Proudly made in America.

Heading to the 2026 South Atlantic JUBILEE ?Stop by Booth #311 to see how Phase Technologies is powering the water wel...
07/24/2026

Heading to the 2026 South Atlantic JUBILEE ?

Stop by Booth #311 to see how Phase Technologies is powering the water well industry with reliable three-phase solutions.

We look forward to seeing you in Myrtle Beach! ⚡️

Powering three-phase equipment doesn't have to mean waiting on the utility company.Phase Perfect® Digital Phase Converte...
07/16/2026

Powering three-phase equipment doesn't have to mean waiting on the utility company.

Phase Perfect® Digital Phase Converters deliver balanced three-phase power from existing single-phase service, helping you avoid costly utility upgrades while keeping your operation moving.

Learn more at PhaseTechnologies.com

Registration is now open for Fall 2026 Phase University!🎓📚Join us for three days of hands-on training, product demonstra...
07/09/2026

Registration is now open for Fall 2026 Phase University!🎓📚
Join us for three days of hands-on training, product demonstrations, and technical education with the engineers behind Phase Technologies products.
🗓 October 12–14, 2026
🗓 October 26–28, 2026
CEU credits are available in multiple states.
Register through the link below and reserve your spot today!

Address

222 Disk Drive
Rapid City, SD
57701

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

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