Single-phase 220 V: the first 2.2 kW without rewiring
Customers buy single-phase 220 V VFDs when the site has no 3-phase 380 V mains. Typical orders: a borehole pump at a country house, a circular saw in a garage, a workshop machine, a brigade's concrete mixer. In stock the regulars are Veichi AC10-S2 0.75-2.2 kW (V/f, 220 V single-phase input, three-phase 220 V on the output) and INVT GD20-S with similar function. The motor must be three-phase 220 V (most three-phase motors have two windings: 220 V in delta. Or 380 V in star). If you have a 380 V motor, you need a 220 to 380 V converter from the same series.
What we ask before a single-phase VFD order
One: motor power, because anything above 2.2 kW will not run from single-phase mains (the grid will not deliver the current). Two: motor type (3-phase 220 V in delta, or 380 V in star, the second needs the 220 to 380 model, not the base 220 to 220). Three: what the motor drives (pump or fan, V/f is enough; conveyor or hoist, need vector, though those rarely come with 220 V input). Four: will it run from a diesel generator (size the generator at 1.5-2x). Warranty 12-24 months, shipping from Kyiv in 1-3 days by Nova Poshta.
Popular single-phase 220V VFD brands
Based on 12-month sales data in this segment, the top brands are Veichi, Mitsubishi Electric, Delta Electronics, Danfoss. Schneider Electric. INVT. Quick links: Veichi, Delta Electronics, Mitsubishi Electric, Schneider Electric.
Selection by key parameters
For focused selection use: single-phase pump drives, motor drives, scalar control VFDs, vector control VFDs.
FAQ
Can a three-phase motor run from a single-phase 220V supply through a VFD?
Yes, if the drive supports 1-phase 220V input and 3-phase output. Sizing must be done by motor current and power.
How much sizing margin should I use?
For fan/pump loads, nominal sizing or up to 10% margin is common; for hard-start applications, 15-20% margin is recommended.
Scalar or vector control: which one is better?
Scalar control is good for basic speed regulation, while vector control gives better low-speed torque and tighter control.
Why does overload fault appear?
Typical reasons are aggressive acceleration, incorrect motor parameters, mechanical jamming or insufficient current reserve.
Can I run a VFD from a generator?
Yes, if generator voltage is stable and power reserve is sufficient. See generator-start applications.
Warranty and technical support
We provide selection assistance. Basic setup guidance. Practical recommendations on protection and commissioning. Non-cash payment. Nationwide delivery. Warranty support are available.
