Dual-Drive VSD Oil-Free Screw Air Compressor

To lower factory electricity bills, ordering from expert China Dual-Drive VSD Oil-Free Screw Air Compressor suppliers provides an immediate return on investment. DECHUAN’s dual permanent magnet design eliminates traditional mechanical coupling losses and allows wide-range flow adjustments from 20% to 100%, matching fluctuating tool loads precisely.

Advanced Dual-Drive Synchronous Technology

Traditional variable frequency drive compressors use a single motor to turn both the high-pressure and low-pressure screw rotors via a shared gear mechanism. This causes mechanical losses when running at low speeds. The air compressor uses a superior split architecture:

• Independent IE5 Permanent Magnet Motors: The low-pressure and high-pressure compressor stages are driven by separate, dedicated IP66 permanent magnet motors. Each stage runs at its own optimal speed profile.

• Wide Flow Regulation Range: Our custom frequency inverters achieve steady flow adjustment between 20% and 100%, completely eliminating the restrictive "speed windows" found in lower-end single-motor systems.

• No Pressure Over-Compression: The system maintains line pressure fluctuations strictly within 0.10 bar, preventing the energy waste associated with over-pressurizing the factory grid.

Technical Specification Matrix

ZR/ZT 75-90 VSD (FF) STD

Performance reference conditions for the unit were measured according to Annex C, 4th edition (2009) of ISO 1217:

· Relative humidity: 0%

· Absolute inlet pressure: 1 bar

· Inlet temperature: 20°C Discharge rate (FAD) was measured at the following operating pressures:

Constant speed type:

·  -7.5 bar type: 7 bar

· -8.6 bar type: 7 bar

· -10 bar type: 9 bar

VSD type:

· -8.6 bar type: 7 bar

· -10.4 bar type: 9 bar

· (2) Class A weighted emission sound pressure level of the workstation (LpWSAd). Measured according to ISO 2151:2004 (using 150 9614/2 sound intensity scanning method). The newly added correction factor is a completely uncertain value (KpAd), conforming to the test code.

· (3) Weight is for reference only; the actual weight supplied shall prevail.

ZR/ZT 110-160 (FF) STD

ZR/ZT 110-160 VSD (FF) STD

According to ISO 1217 Annex C, 4th Edition (2009), the unit performance reference conditions are as follows:

· Relative humidity: 0%

· Absolute inlet pressure: 1 bar

· Inlet temperature: 20°C

Displacement FAD is measured at the following operating pressures:

Constant speed models:

-7.5 bar models: 7 bar

-8.6 bar models: 7 bar

-10 bar models: 9 bar

VSD models:

-8.6 bar models: 7 bar

-10.4 bar models: 9 bar

(2) Class A weighted emission sound pressure level of the workstation (LpWSAd). Measured according to ISO 2151:2004 (ISO 9614/2 sound intensity scanning method). The newly added correction factor KpAd is uncertain, complying with test code.

(3) V1=380V, V2=400V.

(4) Weight is for reference only; actual weight shall prevail.

ZR/ZT 200-275 (FF)

 ZR/ZT 250-315 VSD (FF)

-Relativehumidity:0%

-Absolute inlet pressure: 1bar

-Inlet temperature:20°℃

Discharge rate (FAD) was measured at the following operating pressures

Constant speed type:

-7.5 bar type: 7 bar

-8.6 bar type: 7 bar

-10 bar type: 9 bar

VSDtype:

-8.6 bar type: 7 bar

-10.4 bar type: 9 bar

(2) Class A weighted emission sound pressure level of the workstation (LpWSAd).

Measured according to ISO 2151:2004(using 150 9614/2(sound intensity scanning method).

The newly added correction factor is a completely uncertain value (KpAd), conforming to the test code.

(3) Weight is for reference only; the actual weight supplied shall prevail.

ZR 300-750

ZR 355-900VSD

Performance reference conditions for the unit were measured according to Annex C, 4th edition (2009) of ISO 1217:

· Relative humidity: 0%

· Absolute inlet pressure: 1 bar

· Inlet temperature: 20°C Discharge rate (FAD) was measured at the following operating pressures:

Constant speed type:

·  -7.5 bar type: 7 bar

· -8.6 bar type: 7 bar

· -10 bar type: 9 bar

VSD type:

· -8.6 bar type: 7 bar

· -10.4 bar type: 9 bar

· (2) Class A weighted emission sound pressure level of the workstation (LpWSAd). Measured according to ISO 2151:2004 (using 150 9614/2 sound intensity scanning method). The newly added correction factor is a completely uncertain value (KpAd), conforming to the test code.

· (3) Weight is for reference only; the actual weight supplied shall prevail.

ZR 200X-400X

ZR/ZT 75-160 VSD+

ZR/ZT 75-160 VSD+ FF

Performance reference conditions for the unit were measured according to Annex C, 4th edition (2009) of ISO 1217:

· Relative humidity: 0%

· Absolute inlet pressure: 1 bar

· Inlet temperature: 20°C Discharge rate (FAD) was measured at the following operating pressures:

Constant speed type:

·  -7.5 bar type: 7 bar

· -8.6 bar type: 7 bar

· -10 bar type: 9 bar

VSD type:

· -8.6 bar type: 7 bar

· -10.4 bar type: 9 bar

· (2) Class A weighted emission sound pressure level of the workstation (LpWSAd). Measured according to ISO 2151:2004 (using 150 9614/2 sound intensity scanning method). The newly added correction factor is a completely uncertain value (KpAd), conforming to the test code.

· (3) Weight is for reference only; the actual weight supplied shall prevail.

The Financial Drain of Single-Speed Compression Systems

Traditional fixed-speed compressors run at full electrical draw even when your factory tools only require 40% air output. The excess compressed air is simply vented into the atmosphere or wasted during long, inefficient unloading cycles where the motor spins without doing useful work.

On-Site Implementation & Smart Management

Every Dual-Drive VSD Oil-Free Screw Air Compressor comes integrated with our Internet of Things (IoT) remote management hub. Factory engineers can securely check motor speeds, power draw, and service alerts from any authorized computer or mobile device. This transparency allows maintenance teams to verify precise energy savings week-over-week.

Real Experience: Energy Retrofit in Textile Mills

Textile factories run continuous weaving machines where yarn tensioning requires stable air pressure, but the exact volume required shifts continuously as looms cycle. DECHUAN installed a compressor at a major textile plant. The dual IE5 permanent magnet system tracked the mill's dynamic shifts instantly, keeping line pressure fixed within 0.10 bar and slicing the facility's monthly compressor power bills by 35%.

Technical FAQ

Q: Does the inverter drive create electrical harmonic interference for nearby factory machinery?

A: No. All DECHUAN VSD cabinets feature built-in harmonic filters and shielding. They are fully certified to ensure that compressor electronics do not distort local power lines or affect sensitive automated manufacturing equipment.

Q: Does the IP66 permanent magnet motor require regular greasing or bearing replacements?

A: No. Our custom-designed IE5 permanent magnet motors utilize a completely sealed, oil-lubricated bearing housing integrated directly with the compressor’s central lubrication system. This design blocks dirt and ambient moisture while eliminating manual greasing schedules.

Q: Why are the motors on the Dual-Drive VSD Oil-Free Screw Air Compressor rated to IP66?

A: The IP66 rating ensures complete sealing against heavy dust, fibers, and high-pressure water jets. This allows the permanent magnet motors to operate reliably in humid, lint-heavy textile environments without internal short-circuiting.