
Screw Chiller Commercial HVAC VFD Cabinet 70–750 A
- Power:
- 70–750 A
- Voltage:
- 380V 3PH
- Control:
- V/f (low-harmonic option)

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This air-water cooled variable frequency drive (VFD) cabinet covers 75–1000 kW at 380 V and 75–1200 kW at 660 V with V/f and vector control and IP21 / IP54 protection. Its air-water cooling needs no external cooling-circulation equipment and saves roughly 30% of footprint versus conventional installations.
| Power range | 380 V: 75–1000 kW; 660 V: 75–1200 kW |
|---|---|
| Control mode | V/f, vector |
| Protection rating | IP21 / IP54 |
| Installation feature | No external cooling-circulation equipment needed; ~30% smaller |
| Motor type | PM synchronous + asynchronous induction |
| Options | AFE harmonic module; APF active filter |
Mid-size plants often cannot justify a full liquid-cooling circuit yet still need high drive density. This cabinet bridges the gap with air-water cooling: heat is exchanged to water inside the unit, so no external circulation equipment is required and the installation footprint shrinks by about 30%.
Ratings span 75–1000 kW at 380 V and 75–1200 kW at 660 V, driving PM synchronous and asynchronous motors with V/f and vector control under IP21 / IP54 protection. AFE active front-end and APF active-filter modules remain available as options where harmonic limits apply.
Air-water cooling exchanges heat to water inside the cabinet without an external circulation loop, so you gain most of the density benefit of liquid cooling while keeping installation simple. Full liquid cooling (our liquid-cooled cabinet) suits the largest powers or sealed environments.
Yes. At 660 V it reaches 1200 kW, which covers main fans, pumps and conveyors on mine surface networks while keeping current — and cable sizes — low. Send the motor list and we size the cabinets within 24 hours.
Standard export terms for this range. Send your motor nameplate or equipment list and we confirm the exact model, price and lead time.
Plywood cases are ISPM 15 exempt — no fumigation certificate is required at destination.


