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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Centrifugal Chiller Commercial HVAC VFD Cabinet 400–1386 A
This onboard variable frequency drive (VFD) cabinet is built for centrifugal-chiller compressors, rated 400–1386 A on three-phase 380 V with standard and low-harmonic (THD ≤ 5%) versions. Air, liquid and liquid-air cooling at 110% continuous duty, with AFE and APF options for strict harmonic sites.
Power: 400–1386 AVoltage: 380V 3PHControl: V/f + SVC (low-harmonic option)
| Drive capacity | Three-phase 380 V: 400–1386 A |
|---|---|
| Function type | Standard; low-harmonic (THD ≤ 5%) |
| Overload capacity | 110% continuous operation |
| Cooling | Air, liquid, liquid-air |
| Motor type | PM synchronous + asynchronous induction |
| Options | AFE harmonic module; APF active filter; OEM customization |
Product Description
Centrifugal chillers are the largest single loads in most commercial plants, and their part-load efficiency decides the building's annual energy bill. This cabinet mounts on the chiller and drives the centrifugal compressor from 400 A up to 1386 A on 380 V, trimming surge margins while capturing part-load savings.
Standard and low-harmonic versions (THD ≤ 5%) are available with air, liquid and liquid-air cooling at 110% continuous duty, and it drives PM synchronous and asynchronous compressor motors. A dedicated variant covers 927–1365 A with V/f and sensorless vector control at 120% overload for 60 s, acting as the centrifugal compressor controller on water-cooled and liquid-air-cooled trains. Customization is accepted for OEM chiller platforms, with AFE and APF modules as options.
Key Features
- Onboard cabinet for centrifugal-chiller compressors
- 400–1386 A on three-phase 380 V
- Standard or low-harmonic version (THD ≤ 5%)
- Air, liquid and liquid-air cooling; 110% continuous duty
- OEM customization accepted; AFE / APF options
FAQ about Centrifugal-chiller VFD cabinet
Why put the VFD inside the chiller instead of beside it?
Onboard mounting saves machine-room space, shortens power cabling and lets the chiller factory match cooling and surge control to the drive — that is why this cabinet is designed to ride on the chiller frame.
Can it be customized for our chiller platform?
Yes. OEM customization is accepted — capacity, cooling method, protection and communication can be matched to your platform. Share your compressor data and interface definition and we respond with a proposal within 24 hours.
Related product range
Inverter Control CabinetOrdering Information
Standard export terms for this range. Send your motor nameplate or equipment list and we confirm the exact model, price and lead time.
- Minimum order quantity (MOQ)
- 1 set (sample orders accepted)
- Standard packaging
- Carton and plywood case packaging
- Delivery period
- 10 days after order confirmation
- Payment method
- L/C, D/A, D/P, T/T, Western Union
- Supply capacity
- 500–8,000 sets per month
- Place of origin
- Wuxi, Jiangsu, China
Plywood cases are ISPM 15 exempt — no fumigation certificate is required at destination.
Related models
Liquid-Cooled VFD Cabinet 75–1386 A
- Power:
- 75–1386 A
- Voltage:
- 380V 3PH
- Control:
- V/f + vector
Air-Water Cooled VFD Cabinet 75–1200 kW
- Power:
- 75–1200 kW
- Voltage:
- 380V / 660V 3PH
- Control:
- V/f + vector