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VFDs 45 kW

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45 kW VFD: what jobs we ship it for

45 kW units we ship for 45 kW 380 V motors with nominal current around 90 A. Typical customer this year: cement and woodworking screw compressors 8-9 m³/min. Trunk water supply pumps for district utilities. Aspiration units in big flour and feed plants. Concrete mixers like SB-138. Scraper conveyors for grain elevators. On 37 kW these jobs do not hold: inrush 250+ A, the 37 kW drive trips on OC within 0.3 seconds.

From the grid: 3-phase 380 V, the 660 V option exists for heavy industry (INVT GD350-045G-6, rare). Rated draw 90 A, breaker 125 A C-curve, cable 35 mm² copper up to 30 m (recalc beyond). Veichi AC70-T3-045G/055P per datasheet holds 150% for 60 s (G mode, for crushers) and 110% continuously (P mode, for pumps). G/P switched from the keypad. INVT GD200A-045G/055P the same, plus a wider set of communication protocols (Modbus RTU, Profibus, CANopen via separate card).

Which model we ship in 8 out of 10 cases

From main stock: Veichi AC70-T3-045G/055P (mid-tier, our top product in this band, in stock monthly). INVT GD200A-045G/055P (European feature equivalent). Schneider ATV630 and ATV930 when the customer asks for Europe and accepts 7-14 days. Delta VFD450C43S, Mitsubishi FR-F840: ship to order from Taiwan and Japan warehouses. ABB ACS580-01-087A-4 we ship when the site is already on ABB. Veichi SI23-T3-045G-A (solarized, MPPT 200-820 V) we ship for 45 kW solar pump stations without batteries.

Before paying we ask. First: load type G or P? Crusher, compressor, shock-load conveyor (G); pump or fan (P). This decides 45 kW in G or 37 kW in P. Second: braking resistor. For a 45 kW centrifuge the BR draws 11-15 kW. Without it OU within 0.7 s. Third: cable length. Over 30 m a du/dt filter is required; over 100 m a sine filter. Fourth: ambient IP. Base drive is IP20; for dusty production we ship in a separate IP54 cabinet. 2-year warranty, 1-3 day delivery from our Kyiv warehouse.

Manufacturers in our stock

  • Veichi (AC70, AC310, SI23): mid-tier and solarized
  • INVT (GD20, GD27, GD200A, GD350): universal mid-tier
  • Schneider Electric (ATV630, ATV930): Europe
  • ABB (ACS580, ACS880, ACQ80): premium, ship to order
  • Delta Electronics (VFD-C2000, VFD-CP2000): Taiwan
  • Mitsubishi Electric (FR-F): Japan, ship to order

Frequently Asked Questions

Which motor is a 45 kW VFD selected for?

A 45 kW VFD is selected for a three-phase electric motor with a rated power of 45 kW when the motor current does not exceed the drive rated current. Before ordering, check the motor nameplate: power, voltage, current, and wiring diagram.

What input voltage is required for a 45 kW VFD?

The input voltage depends on the site supply and the motor. For a single-phase 220 V supply, choose a 220 V input model if it is available for this power. Industrial motors usually require a 3-phase 380 V VFD.

Do I need extra power reserve for a 45 kW VFD?

For pumps and fans, selecting by the motor rated power and current is often enough. For heavy starts, conveyors, compressors, mixers, or frequent acceleration cycles, allow extra current reserve or move to the next power size.

Where are 45 kW VFDs used?

45 kW VFDs are used to control the speed of pumps, fans, conveyors, machines, and other equipment with asynchronous motors. The exact application depends on load torque, duty cycle, and installation conditions.

How can I quickly choose the right model?

Send a motor nameplate photo or provide the power, voltage, rated current, number of phases, and load type. A Chastotnik.ua manager will select a compatible VFD, check availability, and advise on basic startup parameters.