37 kW VFD: what motor we ship it for
37 kW units we ship for 37 kW 380 V motors with nominal current around 72-75 A. Typical customer this year: big screw compressors 6-7 m³/min at cement and woodworking plants. Multi-story building water supply pumps. Supply/exhaust units for big shops and hangars. Flour mill aggregates. Crushing-sorting complexes. On 30 kW these jobs no longer hold: a compressor with 200+ A inrush exceeds the limit, the 30 kW drive trips on OC.
From the grid: 3-phase 380 V, the 660 V option exists (INVT GD350-037G-6) for industrial sites with special supply. Rated draw 75 A, breaker 100 A C-curve, cable 25 mm² copper up to 30 m (recalc beyond for voltage drop). Veichi AC70-T3-037G/045P per datasheet holds 150% for 60 s (G mode, for crushers) and 110% continuously (P mode, for pumps). One drive, two jobs, switched from the keypad.
Which model we ship in 8 out of 10 cases
From daily stock: Veichi AC70-T3-037G/045P (mid-tier, our main product in this band, in Kyiv monthly). INVT GD200A-037G/045P (European feature equivalent, good sensorless vector). Schneider ATV630 and ATV930 when the customer asks for Europe, accepts 7-14 days. Delta VFD370C43S, Mitsubishi FR-F840-00770-E2-60: ship to order from Taiwan and Japan warehouses. ABB ACS580-01-072A-4 we ship when the site is already on ABB and a single brand is required. Veichi SI23-T3-037G-A (solarized, MPPT 200-820 V) we ship for 37 kW solar pump stations.
Before paying we ask. First: load type G or P? Crusher, compressor, shock-load conveyor (G); pump or fan (P). This decides 37 kW in G or 30 kW in P. Second: braking resistor. For a 37 kW centrifuge the BR draws 9-12 kW; without it OU within 0.8 s. Third: cable length to motor. Over 30 m a du/dt filter is needed; 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 via Nova Poshta.
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, FR-A): Japan
