Single-phase 220V frequency converters: what they are and where they are used
A 1-phase 220V VFD is connected to a standard single-phase supply and generates controlled output for motor speed control. This is a common solution for pumps, fans, compact machines and utility drives where smooth start, stable RPM and motor protection are required.
Related sections: all frequency converters, 3-phase 380V drives, for pumps, for fans.
How to choose a single-phase 220V VFD
Select by motor rating, load type, rated current, overload margin, EMC requirements and cabinet cooling conditions. For pump/fan loads, matching VFD and motor ratings is usually enough; for harder starts use a 15-20% margin.
Power-based selection pages: 2.2 kW, 3 kW, 5.5 kW, 7.5 kW.
| Model | Brand | Power | Input/output | Typical use |
|---|---|---|---|---|
| AC10-T/S2-R75G-B-VC | Veichi | 0.75 kW | 1ph 220V / 3ph | pumps, fans, light-duty drives |
| AC70E-S2-1R5G | Veichi | 1.5 kW | 1ph 220V / 3ph | general industrial use |
| AC10-T/S2-2R2G-B-VC | Veichi | 2.2 kW | 1ph 220V / 3ph | machines with higher torque demand |
| FR-D720S-042SC-EC | Mitsubishi Electric | 0.7 kW | 1ph 220V / 3ph | precise process control |
| VFD11AMS21AFSAA | Delta Electronics | 3.0 kW | 1ph 220V / 3ph | heavier machine applications |
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 and 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 and practical recommendations on protection and commissioning. Non-cash payment, nationwide delivery and warranty support are available.
