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HS720 High Power Inverter 5.5-280 KW 380V
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HS720 High Power Inverter 5.5-280 KW 380V

HS720 series three-phase 380 V inverter from 5.5 kW to 280 kW, output 0-437 V and 0-500 Hz. Air cooled frames from 5.5 kW, floor cabinet from 45 kW. Built for fans, pumps, compressors, extruders and heavy machine tools.
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Product Introduction

Overview

The HS720 series (720G3) is a high power inverter for three-phase 380 V loads from 5.5 kW to 280 kW - fans, pumps, compressors, extruders, mixers, conveyors and heavy machine tools. Output runs 0–437 V at 0–500 Hz, so the same unit drives a standard induction motor or a high-speed spindle. Units from 45 kW up ship in a floor-standing cabinet; smaller frames mount on a panel backplate.

Model range and output current

Power Input voltage Output voltage Output frequency Rated current
5.5 kW AC 380 V ±15% AC 0–437 V 0–500 Hz 13 A
7.5 kW AC 380 V ±15% AC 0–437 V 0–500 Hz 17 A
11 kW AC 380 V ±15% AC 0–437 V 0–500 Hz 25 A
15 kW AC 380 V ±15% AC 0–437 V 0–500 Hz 32 A
18.5 kW AC 380 V ±15% AC 0–437 V 0–500 Hz 37 A
22 kW AC 380 V ±15% AC 0–437 V 0–500 Hz 45 A
30 kW AC 380 V ±15% AC 0–437 V 0–500 Hz 60 A
37 kW AC 380 V ±15% AC 0–437 V 0–500 Hz 75 A
45 kW AC 380 V ±15% AC 0–437 V 0–500 Hz 90 A
55 kW AC 380 V ±15% AC 0–437 V 0–500 Hz 110 A
75 kW / 75 kW-B AC 380 V ±15% AC 0–437 V 0–500 Hz 152 A
90 kW AC 380 V ±15% AC 0–437 V 0–500 Hz 176 A
110 kW AC 380 V ±15% AC 0–437 V 0–500 Hz 210 A
132 kW AC 380 V ±15% AC 0–437 V 0–500 Hz 253 A
160 kW AC 380 V ±15% AC 0–437 V 0–500 Hz 304 A
185 kW AC 380 V ±15% AC 0–437 V 0–500 Hz 340 A
200 kW AC 380 V ±15% AC 0–437 V 0–500 Hz 380 A
220 kW AC 380 V ±15% AC 0–437 V 0–500 Hz 426 A
250 kW AC 380 V ±15% AC 0–437 V 0–500 Hz 465 A
280 kW AC 380 V ±15% AC 0–437 V 0–500 Hz 520 A

Frame size and weight

Power Product size (mm) Gross weight Net weight
5.5 kW 265 × 170 × 205 2.7 kg 2.2 kg
7.5–11 kW 320 × 220 × 270 3.6–3.8 kg 3.1–3.3 kg
15–22 kW 430 × 300 × 290 6.5–6.8 kg 5.8 kg
30–37 kW 500 × 390 × 310 10.6–11.8 kg 10.6 kg
45–75 kW 600 × 420 × 360 25 kg 23 kg
75–110 kW 760 × 490 × 360 45–46 kg 39–43 kg
132–185 kW 870 × 610 × 510 71–74 kg 61–64 kg
200–280 kW 1040 × 700 × 570 137–140 kg 117–120 kg

HS720 high power inverter parameters 5.5 to 280 kW

How to size a drive

  1. Start from motor current, not nameplate kW. Take the motor's rated current from its nameplate and pick the frame whose output current is equal or higher. A 22 kW motor with a 48 A nameplate needs the 22 kW frame at 45 A only if the duty is light; for pumps and fans with high inertia, step up one size.
  2. Check 500 Hz capability for spindles. High-speed spindle motors run to 400–500 Hz. Every HS720 frame reaches 500 Hz, so the same series covers both a 50 Hz pump and a 24 000 rpm spindle.
  3. Allow for cabinet size. From 45 kW the unit needs a floor cabinet; leave 100 mm clearance top and bottom for the fans.
  4. Plan braking if the load has inertia. Conveyors and centrifuges need a braking resistor or regenerative unit - tell us the load inertia when ordering.

Typical applications

  • Centrifugal fans and pumps in HVAC and water treatment
  • Air compressors and extruders
  • Mixers, agitators and centrifuges
  • Conveyors and heavy machine tool spindles

FAQ

Can the HS720 run a 400 Hz spindle motor?

Yes. Output frequency goes to 500 Hz on every frame, so 300 Hz and 400 Hz spindles are within range.

What is the difference between 75 kW and 75 kW-B?

Both deliver 152 A. The -B variant uses the larger 600 × 420 × 360 cabinet instead of the 760 × 490 × 360 frame, which suits panels with limited depth.

Do I need to derate at high altitude?

Above 1 000 m the air thins and cooling drops. Derate roughly 5 °C of ambient per additional 1 000 m; contact us with the site altitude for a specific recommendation.

Is a braking resistor included?

No. Braking resistors and regenerative units are separate items; we size them against your load inertia and stopping time.

Related products

Pair with our HS320 compact VFD for small frames, and our LSU power supplies for control cabinets.

Hot Tags: high power inverter, 380V VFD 55kW, 132kW inverter, 3 hp vfd drive, 30 hp vfd, cnc spindle with tool changer, frequency converter vfd, small cnc spindle, Speed controller

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