Big HP For
Bigger H-Pump Loads.
Horizontal surface pumping systems move serious volume — water injection, salt water disposal, transfer and pipeline boost — on big electric motors. You know the pumps. We know the drives that run them, at the HP and reliability the job demands.
Big Pumps Need Drives That Don't Flinch.
A horizontal multistage surface pump moving disposal or injection water is one of the most demanding loads in the field. It runs continuously, starts against a full column of fluid, and any trip means lost throughput and a truck roll to a remote site.
Undersized or generic drives struggle: they can't deliver sustained torque at high HP, they inject harmonics back onto shared transformers, and when a whole pad runs off one service they create power-quality problems that ripple across every load on site.
- Motor HP outruns what a standard drive can sustain continuously
- Hard starts stress couplings, seals and the pump shaft
- Harmonics from big VFDs foul shared transformers and metering
- Long lead times on high-HP drives stall the whole project
- Multiple vendors for drive, enclosure and controls to coordinate
High-Horsepower Drives, Purpose-Built For The Load.
Phase Technologies builds VFDs sized for the real horsepower an H-pump demands — with the sustained torque, soft starting and clean power those big motors need to run around the clock. We're not pump people trying to sell you a drive; drives are all we do.
Our LH Series active front end delivers high HP while meeting IEEE 519 natively, so a full pad of pumps doesn't wreck power quality. Soft-start eliminates the mechanical shock of across-the-line starting. And it ships from one manufacturer, in a listed panel, on the industry's best lead times.
- High-HP VFDs sized to the pump, with sustained torque at speed
- Soft-start ends hard-start shock on shafts, seals and couplings
- LH Series active front end meets IEEE 519 — no bolt-on filters
- Complete UL 508A panels: drive, protection, controls, enclosure
- Built to order in the USA with industry-leading lead times
Built For High-HP
Surface Pumping
High Horsepower
DX and LH Series drives are built for the motors that run horizontal multistage surface pumps — delivering sustained torque at operating speed for continuous duty.
Variable Speed
Trim pump speed to match disposal or injection rate instead of throttling a valve. Hit target rate and pressure, and stop wasting energy running wide open.
Soft Start
Ramp a fully loaded pump up smoothly. No across-the-line inrush, no torque shock on the shaft, seals and couplings — and far less stress on the motor.
Low Harmonics
Need clean power? The LH Series active front end meets IEEE 519 with <5% THD — no external filters — when several pumps share one transformer on a pad.
Field-Proven
The DX Series is the field-proven workhorse behind countless pumps — simple to set up, reliable in the heat and dust, and easy for a crew to service.
Outdoor Rated
NEMA 3R enclosure options built for the pad — sun, dust, chemical-laden air and the temperature swings of a remote disposal site.
Phase Connect
Cellular remote monitoring for unmanned pads. Run status, rate, fault history and runtime from your phone — know before you drive out.
One Manufacturer
Drive, motor protection, controls and enclosure in one UL 508A panel — built and tested in-house, shipped as one SKU with one number to call.
Every Surface Pumping Duty
Wherever a horizontal surface pumping system moves fluid, a Phase drive can run the motor — sized to the horsepower and built for continuous field duty.
Products For
H-Pump Systems
From a high-HP standalone VFD to a fully integrated, listed pump-control panel, Phase has a drive solution sized to your motor and your pad.
DXL Series
The go-to drive for surface pumping. Field-proven reliability on disposal, injection, transfer and booster pumps — simple setup, built-in motor protection, and configurable I/O for rate and pressure feedback. Rugged, serviceable, and sized to the motor.
LHX Series
When power quality matters, the active-front-end LH Series meets IEEE 519 natively and keeps power clean where several pumps share one transformer — while delivering the same sustained torque for continuous surface-pump duty.
Panel Shop
Complete surface-pump control panels built and tested in-house — VFD, disconnect, motor protection, HOA, and transducer wiring in a NEMA 3R enclosure. Engineered to your motor HP and shipped ready to set.
Built To Spec,
Built In‑House.
Need more than a drive? Our UL 508A panel shop builds complete, listed dewatering control assemblies, including VFD, bypass, HOA, motor protection, and wiring, engineered for your pump HP, input voltage, and NEMA rating.
One Manufacturer from the Drive to the Finished Panel
Choosing the correct pump drive involves more than matching horsepower. Incoming voltage, phase availability, pump type, motor lead length, pressure requirements, environmental conditions, harmonic limits and control preferences can all affect the final system design.
Phase Technologies offers residential drives, general-purpose DXL drives, low-harmonic LHX drives, phase-converting systems, voltage-doubling configurations and customized control panels from a single U.S. manufacturer.
Whether you need constant pressure for a home, three-phase motor control for an irrigation well or a customized low-harmonic panel for a municipal pumping station, our team can help configure a system around the way your site actually operates.
Built In The USA
Proudly American Made
Every Phase drive is engineered, assembled and tested at our Rapid City, South Dakota headquarters — with the industry’s fastest lead times.
BABA Compliant · Build America, Buy America →