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Frequency converters 280.0 kW

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Variable Frequency Drives 280 kW

A 280 kW variable frequency drive (VFD) is a high-power AC motor controller for smooth speed regulation of three-phase asynchronous motors rated at 280 kW (supply: 3×380V, nominal output current ~500–535 A). Drives in this class support vector or scalar control, significantly reduce inrush current during start-up, and deliver energy savings of 40–50% on pump and fan installations. See the full range of variable frequency drives in our catalog.

Applications of 280 kW VFDs

Frequency drives rated at 280 kW are a standard choice for the following industrial applications:

  • Pumping stations — centrifugal water-supply pumps, sewage lift stations, oil and chemical process pumps;
  • HVAC and ventilation — industrial centrifugal fans, exhaust systems, large-building air-handling units;
  • Compressors — screw and reciprocating compressors in industrial plants;
  • Conveying and lifting equipment — belt conveyors, hoists, overhead and gantry cranes;
  • Crushers and mills — equipment in cement, mining, and food processing industries.

For loads with a quadratic torque curve (pumps, fans) models with an overload rating of 120–150% for 60 s are sufficient. For hoisting and process machinery choose drives rated at 150% / 60 s overload or higher.

280 kW VFD Models

The table below lists 280 kW models currently in stock and ready to ship:

Model Brand Series Current (A) Control mode EMC filter Typical application
GD200A-280G/315P-4 INVT GD200A 530 Scalar / Sensorless vector (SVC) Built-in Pumps, fans, conveyors
DX100-4T2800Q Simphoenix DX100 535 FOC vector (f_max 1000 Hz) Built-in CNC spindles, high-precision machinery
AC310-T3-280G/315P-L Veichi AC310 510 SVC / FVC vector, built-in PLC Option Pumps, fans, hoists
AC70-T3-280G/315P Veichi AC70 510 SVC / FVC vector None Pumps, fans, cranes
FR-F840-06100-E2-60 Mitsubishi Electric FR-F840 506 Optimum excitation, built-in PLC Built-in HVAC, pumps, fans

Other power ratings

If 280 kW does not match your requirements, browse the adjacent power-rating catalogs:

Warranty and support

All 280 kW frequency drives are supplied with an official manufacturer's warranty. We deliver across Ukraine via Nova Poshta and Ukrposhta, and provide technical consultation on selection, wiring, and commissioning.

Frequently Asked Questions

What is a variable frequency drive and how does it work?

A VFD is an electronic device that converts AC mains voltage to DC (rectifier stage), then back to AC with adjustable frequency and amplitude (inverter stage). By varying the output frequency from 0 to 600 Hz, it smoothly controls the rotational speed of an AC induction motor from standstill to rated speed and beyond, while limiting starting current to 1.5× rated.

How do I size a VFD for my motor?

The VFD power rating should equal or exceed the motor nameplate power. For pumps and fans (variable torque), select based on the motor rating. For conveyors, cranes, and crushers (constant torque or heavy starting), choose one power step above — for example, for a 4 kW conveyor motor, we recommend a 5.5 kW VFD. Also verify that the motor's rated current does not exceed the VFD's current rating.

Can I run a three-phase 380V motor from a single-phase 220V supply?

Yes, you need a VFD with single-phase 220V input and three-phase 380V output, such as the Veichi AC70E or AC10 T/S2 variant. Power is limited to 2.2–4 kW depending on the series. The VFD not only starts the motor but also provides soft starting, speed control, and overload protection.

What is the difference between scalar and vector control?

Scalar control (V/f) maintains a constant voltage-to-frequency ratio — a simple, reliable method for pumps, fans, and compressors. Vector control (SVC, FOC) calculates motor current and flux vectors in real time, delivering 150–200% rated torque at low frequencies. Vector control is essential for conveyors, elevators, extruders, cranes, and CNC machine tools.

Why do I need an EMC filter in a VFD?

An EMC (electromagnetic compatibility) filter reduces high-frequency interference that the VFD generates in the power supply and airwaves. It is mandatory for facilities with sensitive equipment (medical, laboratories, server rooms), residential buildings, and when the cable between VFD and motor exceeds 25 m. The Veichi AC10, Delta VFD-E, and INVT GD20 models include a built-in Class C3 EMC filter.

How much energy does a VFD save?

On pumps and fans, savings range from 20% to 60% depending on the load profile. Power is proportional to the cube of speed (P∝n³): reducing speed by 20% halves energy consumption. If equipment typically operates at 70–80% of rated speed, average savings are approximately 40%. Payback period for a VFD on a pumping station is 6 to 18 months.