CNC machining center cutting metal in a machine shop
Applications · Machine Shops

Machine Shops

Your dream shop shouldn't be limited by available power. More and more machine shops are being started in rural and other non-industrial areas where three-phase power is not available or is prohibitively expensive. Whether you're setting up in a pole barn, garage, or remote commercial space, the power infrastructure shouldn't limit your machining capabilities or force you to compromise on equipment quality.

Recommended Products
Phase Perfect digital phase converters
$1,626 Projected Annual Savings Typical 50 HP shop · $0.20 / kWh
The Challenge

Limitations Of Conventional Conversion Methods

While rotary and static converters offer alternatives to utility three-phase power, they come with significant drawbacks due to poor voltage balance:

Premature Motor FailureOther phase conversion methods cannot maintain good voltage balance, causing motors to run hotter—significantly reducing motor life even when temperatures appear acceptable.
Expensive Drive DamageUnbalanced power forces rectifier diodes in VFD, spindle, and servo drives to carry excessive current, leading to premature failures and costly complete drive replacements.
Inconsistent Machining ResultsSpindle and drive motor speeds could become unstable during heavy cuts, which can create chatter, poor surface finish and the loss of motor torque can cause unexpected stalling during machining operations.
Frustrating DowntimeDrives can trip or fault with "DC bus" or "phase loss" errors due to phase imbalance, interrupting production and workflow.
Compromised PrecisionHigh-precision operations become increasingly difficult due to thermal distortion from unbalanced heating in spindle assemblies—directly affecting part accuracy.
The Bottom LineModern CNC equipment and even conventional machines with electronic controls require significantly better voltage balance than rotary or static converters can provide. Without it, you're compromising not just your equipment longevity, but your shop's productivity and part quality.
The Solution

Phase Perfect®

The Phase Perfect® was specifically designed to address the unique power needs of machine shops. Just feed single-phase into the unit and get utility-quality three-phase back out.

Unlike other types of phase converters, Phase Perfect offers:
  • Low standby power consumption — Reducing ongoing operational costs
  • Utility-grade, true three-phase output — Ensuring perfect balance for sensitive electronics
  • Support for multiple simultaneous loads — Run your entire shop, not just one machine
  • No moving parts — Silent, maintenance-free operation
Phase Perfect converts single-phase input into utility-grade three-phase output
Why Machine Shops Choose The Phase Perfect®

Clean Power, Hard Starts

True Three-Phase PowerProvides clean, balanced, and stable three-phase power that meets the tight voltage balance tolerances required by CNCs and sensitive electronics—unlike rotary or static converters.
Power For Hard-Starting LoadsEnsures dependable operation of high-inertia machines like lathes, mills, and air compressors.
Technical Details

Designed For Versatility

Transformer Friendly

In many cases, machine shop equipment requires 208 V delta configured three-phase power. A Phase Perfect® is easily paired with relatively inexpensive buck/boost transformers to lower voltage to 208 V from 240 V if required or can be used with a Delta to Wye transformer for applications requiring a neutral.

Perfect For

  • Rural or off-grid locations
  • Pole buildings, barns, and shops
  • Equipment change-outs where 3-phase isn't available
  • Multiple simultaneous loads

Reliable

With over 20 years of refinement, our solid-state converters are built to last: No moving parts = less maintenance, fewer failures. Phase Perfect ensures uninterrupted operation, lower energy costs, and longer equipment life.

Calculate Your Savings

Phase Perfect vs. Everything Else.

Stop wasting money on lost power and burned-out motors. Enter your load size and the hours per day you are working with your equipment to see what you’re spending with a rotary converter and how much you’ll save with a Phase Perfect today.

Calculate Your Savings

Your Yearly Savings vs. Rotary$1,626

Calculations assume $0.20/kWh. Phase Perfect idles at 80W; a comparable rotary idles at ~11% of rated HP. Check your regional rate →

FeaturePhase Perfect®
Digital Converter
Rotary ConverterStatic Converter
Running Efficiency98.7%~87% — 13% wasted as heat~50% — only powers 2 of 3 windings
Voltage Imbalance<2% — utility standard3–8% — stresses motorsHigh — only 2 phases are powered
Standby Power Draw80W — barely anything2,000–4,000W+Low
Noise LevelNear silent — no moving partsLoud — always spinningSilent
Motor Power Output100% — all three phases powered~85% — voltage imbalance reduces output~50–65% — motors run hot & weak
Motor Life ImpactFull life — clean balanced powerReduced — imbalance causes heatingSignificantly reduced — runs hot
Multiple MachinesRun several simultaneouslyYes, if sized correctlyOne machine at a time
Maintenance RequiredNone — fully solid stateCapacitors every 1–3 yearsOccasional capacitor check
Built-in ProtectionDigital fault monitoringNoneNone
Yearly Operating Cost (10 HP)~$24/yr~$1,700/yr~$12/yr idle, but motors wear faster
Starting and Load capacity50 HP100 HP Required (2× Oversized)—
Physical PresenceCompact, Lightweight, QuietLarge, Heavy & Loud—
Monitoring & ControlsBuilt-In Display, Keypad & ModbusNone—
Regenerative TechnologyReturns Energy During ShutdownWasted Energy / No Regeneration—
Installation2 Wires In, 3 OutComplex Wiring Required—
EnclosureLow Cost NEMA 3R Available$$$ Expensive 3R—
Voltage Doubling — 230 V → 460 V

Run 460 V three-phase equipment off standard 230 V single-phase service — no transformer required. Available in 20 HP and 30 HP configurations.

Learn More →

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