20+
Years Manufacturing
Experience

80+
Countries
Exported

50,000+
Units Annual
Production Capacity

OEM & ODM
Engineering &
Customization

Variable Frequency Drive (VFD) Technical Specifications

Voltnex Power provides high-performance Variable Frequency Drives (VFD) engineered for precise motor speed control, heavy-duty torque regulation, and maximum energy efficiency across industrial applications. Comprehensive specs and customized options are detailed below:


ELECTRICAL & MOTOR CONTROL SPECS

Power Range 0.75 kW – 1000 kW (1 HP – 1350 HP)
Motor Compatibility AC Induction Motor / Three-Phase Motor
Phase Configuration 3 Phase (3P Input & Output)
Input Voltage 208V / 220V / 380V / 400V / 415V / 440V / 480V
Input Frequency 50 Hz / 60 Hz
Output Frequency 0.00 – 600 Hz (Variable Frequency)
Control Mode V/F Control / Sensorless Vector Control (SVC)

APPLICATION, PROTECTION & SUPPLY

Target Application Motor Speed Control / Variable & Constant Torque
Protection Suite Overvoltage, Undervoltage, Overcurrent, Overload, Short Circuit, Overtemperature
Communication RS485 / Modbus RTU (Optional Fieldbus Interfaces)
Customization OEM / ODM / Custom HP Rating & Enclosure
Supply Ability Factory Direct / B2B Wholesale / Global Export
Overload Capacity 150% for 60s / 180% for 3s (Heavy Duty)
Energy Efficiency ≥ 98% Optimized Motor Drive Performance

Looking for Tailored VFD Solutions or OEM/ODM Branding?
Our engineering team builds bespoke VFD systems designed to meet your specific motor parameters, industrial environments, and OEM requirements.
GET INSTANT VFD QUOTE & SPECS →

 

 

OUR VARIABLE FREQUENCY DRIVE (VFD) RANGE

315kW 400kW 450kW 500kW Three Phase Variable Frequency Drive VFD AC Inverter Heavy Duty Industrial Motor Controller 420HP 530HP 600HP 670HP 208V 220V 380V 400V 415V 440V 480V Factory Direct Voltnex Power315kW 400kW 450kW 500kW Three Phase AC Drive Frequency Inverter VFD Heavy Duty Motor Speed Controller 420HP 530HP 600HP 670HP 208V 220V 380V 400V 415V 440V 480V Industrial Equipment Exporter Voltnex Power
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315kW-500kW (420HP-670HP) Three Phase Variable Frequency Drive VFD AC Inverter Heavy Duty Industrial Motor Controller 208V-480V | Voltnex Power

220kW 250kW 285kW (300HP 340HP 380HP) Three Phase AC Frequency Inverter VFD Adjustable Frequency Drive 208V 220V 380V 400V 415V 440V 480V High Power Motor Speed Controller Voltnex Power220kW 250kW 285kW (300HP 340HP 380HP) 3 Phase Variable Frequency Drive VFD AC Inverter 208V 220V 380V 400V 415V 440V 480V Heavy Duty Industrial Motor Controller Factory Direct Voltnex Power
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220-285kW Three Phase VFD Variable Frequency Drive 300-380HP AC Inverter Motor Speed Controller 208V-480V Industrial Manufacturer | Voltnex Power

160kW 185kW 200kW (215HP 250HP 270HP) Three Phase AC Frequency Inverter VFD Adjustable Frequency Drive High Power Motor Speed Controller Supporting 208V 220V 380V 400V 415V 440V 480V Voltnex Power160kW 185kW 200kW (215HP 250HP 270HP) Three Phase Variable Frequency Drive VFD AC Inverter Heavy Duty Industrial Motor Controller Factory Direct Supply Supporting 208V 220V 380V 400V 415V 440V 480V Voltnex Power
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160-200kW (215-270HP) Three Phase AC Frequency Inverter VFD Adjustable Frequency Drive High Power Motor Speed Controller 208V-480V | Voltnex Power

90kW 110kW 132kW (120HP 150HP 175HP) Three Phase AC Frequency Inverter VFD Adjustable Frequency Drive High Power Motor Speed Controller Supporting 208V 220V 380V 400V 415V 440V 480V Wholesale Supply Voltnex Power90kW 110kW 132kW (120HP 150HP 175HP) Three Phase Variable Frequency Drive VFD AC Inverter Heavy Duty Industrial Motor Controller Supporting 208V 220V 380V 400V 415V 440V 480V Factory Direct Supply Voltnex Power
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90-132kW (120-175HP) Three Phase VFD Variable Frequency Drive AC Frequency Inverter Motor Speed Controller 208V-480V | Voltnex Power

15-22kW 20HP-30HP Three Phase AC Frequency Inverter VFD Adjustable Frequency Drive with LED Display Motor Speed Controller Supporting 208V 220V 380V 400V 415V 440V 480V Industrial Applications Voltnex Power15-22kW 20HP-30HP Three Phase Variable Frequency Drive VFD AC Inverter Industrial Motor Controller Supporting 208V 220V 380V 400V 415V 440V 480V AC Systems Factory Direct Supply Voltnex Power
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15-22kW (20-30HP) Three Phase VFD Variable Frequency Drive AC Frequency Inverter Motor Speed Controller 208V 220V 380V 400V 415V 440V 480V | Voltnex Power

7.5kW 9.2kW 11kW VFD (10HP 12.5HP 15HP) Three Phase Variable Frequency Drive 380V 400V 480V AC Drive Inverter Motor Controller for Industrial Automation Voltnex Power7.5kW 11kW (10HP 15HP) Three Phase AC Frequency Inverter VFD Adjustable Frequency Drive 208V 220V 380V 400V 415V 440V 480V Industrial Motor Controller for Automation Equipment Voltnex Power
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7.5-11kW (10-15HP) Three Phase VFD Variable Frequency Drive AC Motor Controller 380V 400V 480V Industrial Inverter | Voltnex Power

 

 

What Is a Variable Frequency Drive (VFD / Inverter Drive)?

A Variable Frequency Drive (VFD), also commonly referred to as an AC variable speed drive, adjustable frequency drive (AFD), or industrial inverter drive, is a high-precision power electronics device used to control the rotational speed, torque, and acceleration of electric AC induction motors by varying the supply frequency and voltage.

By converting fixed-frequency grid power to dynamic variable frequency output, an industrial VFD optimizes motor performance for pumps, fans, compressors, conveyors, and heavy industrial machinery. It eliminates high mechanical stress, reduces heavy motor inrush current, and delivers substantial energy savings across automated production lines.


CORE FEATURE 01

Precise Motor Speed & Torque Control

Provides continuous variable speed adjustment from 0 to 600 Hz, enabling smooth process control and dynamic torque management under varying load demand.


CORE FEATURE 02

Maximum Energy Optimization

Drastically reduces power consumption on centrifugal pumps and HVAC fans by matching real-time motor speed with operational capacity needs.


CORE FEATURE 03

Soft Start & Mechanical Protection

Eliminates direct-on-line (DOL) high locked-rotor currents, lowering mechanical shock on belts, gears, and shafts during motor start-up.


CORE FEATURE 04

Advanced Vector & V/F Control

Features Sensorless Vector Control (SVC) and V/F control algorithms to deliver high starting torque and precise low-speed response.


CORE FEATURE 05

Comprehensive Motor Safety

Built-in industrial protections guard against overvoltage, undervoltage, overcurrent, motor overload, phase loss, and thermal overheating.


CORE FEATURE 06

Smart Automation Integration

Supports RS485 and Modbus RTU protocols for simple connection to PLC systems, SCADA platforms, and smart factory industrial networks.

Need Custom Industrial VFD Drives & Solutions?
Voltnex Power manufactures high-performance variable frequency drives tailored for heavy-duty motor control and global industrial systems.
CONSULT AN ENGINEER →

 

 

Variable Frequency Drive (VFD) Power Capacity Range

From compact low-voltage motor drives to high-power heavy-duty industrial VFD cabinet systems, Voltnex Power manufactures standard and custom kW / hp frequency inverters engineered for precise motor speed regulation and maximum energy efficiency.

Power Capacity Range (kW / hp) Typical Applications & Best Use Cases
0.75 kW – 7.5 kW
(1 hp – 10 hp) 		Light-duty single/three-phase motor speed control for exhaust fans, commercial HVAC air handlers, small water booster pumps, light conveyors, and precision packaging machinery.
11 kW – 37 kW
(15 hp – 50 hp) 		Standard industrial 3-phase VFDs for CNC machine tools, industrial blowers, textile equipment, mixers, woodworking machinery, and automated assembly conveyors.
45 kW – 110 kW
(60 hp – 150 hp) 		Heavy-duty inverter drives for plastic injection molding, industrial air compressors, central HVAC chillers, plastics extruders, and municipal water supply pumps.
132 kW – 315 kW
(180 hp – 420 hp) 		High-torque industrial VFD systems for mining crushers, heavy slurry pumps, cement plant induced draft fans, and industrial material handling cranes.
355 kW – 630 kW
(475 hp – 850 hp) 		Megawatt-class motor controllers for high-capacity centrifugal compressors, mine ventilation systems, power station fans, and steel rolling mills.
710 kW – 1000 kW+
(950 hp – 1350 hp+) 		Heavy industrial cabinet-built VFD systems for extra-large municipal waterworks, marine propulsion drives, deep mining conveyors, and plant-wide automation systems.

Need a High-Power Industrial VFD Above 315 kW?
Contact our electrical engineering team for custom 400 kW, 500 kW, 630 kW, 800 kW, or 1000 kW+ variable frequency drive cabinets tailored to your motor specs and load requirements.
INQUIRE HIGH kW BUILD →

 

 

Variable Frequency Drive (VFD) Applications

Voltnex Power industrial Variable Frequency Drives (VFDs) deliver dynamic speed regulation, torque optimization, and extreme energy savings. Designed to seamlessly integrate into heavy-duty automated networks across critical global industries:

APPLICATION 01

Pumps & Water Systems

VFD for industrial water pumps, booster systems, and wastewater treatment plants. Delivers constant pressure control, eliminates water hammer, and maximizes pumping efficiency.

APPLICATION 02

Fans, Blowers & HVAC

VFD motor drives for commercial HVAC, industrial exhaust fans, and air handling units (AHU). Automatically matches airflow demand to achieve optimal power consumption.

APPLICATION 03

Industrial Air Compressors

Variable speed control for rotary screw air compressors. Maintains continuous air pressure, reduces frequent start-stop mechanical strain, and cuts peak electrical loads.

APPLICATION 04

Conveyors & Material Handling

Soft start and dynamic speed matching for automated logistics belt conveyors, packaging systems, and material sorting equipment to prevent mechanical shock and spillages.

APPLICATION 05

CNC & Machine Tools

High-precision vector control for CNC spindles, lathes, milling machines, and automated tool drives. Ensures high low-speed torque and ultra-smooth rotational accuracy.

APPLICATION 06

Manufacturing & Production Lines

Industrial VFDs for automated assembly lines, injection molding, extruders, and mixing machines. Supports RS485/Modbus fieldbus integration for smart factory control.

APPLICATION 07

Textile & Spinning Machinery

Tailored VFD speed synchronization for textile looms, spinning frames, and dyeing equipment. Guarantees steady thread tension and prevents yarn breakage during operation.

APPLICATION 08

Mining & Heavy Industry

Heavy-duty high-power VFDs for crushers, ball mills, industrial hoists, and slurry pumps. Engineered to withstand harsh environments, extreme vibrations, and heavy overload capacity.

APPLICATION 09

Renewable Energy & Power Systems

VFD motor drives applied in solar pumping systems, hydro generation auxiliary motors, and energy recovery networks to maintain efficient power utilization.

Need a Specialized VFD for Your Specific Industrial Application?
Voltnex Power offers customized engineering support, bespoke enclosures, and tailored software parameters for global OEM projects and harsh field conditions.
GET APPLICATION SOLUTION →

 

 

ENGINEERING EXCELLENCE

WHY CHOOSE VOLTNEX INDUSTRIAL VFD?

Engineered for severe industrial environments, VoltNex Variable Frequency Drives deliver dynamic speed modulation, extended motor protection, and optimized energy efficiency across global automated networks.


CORE PLATFORM ADVANTAGE

Next-Gen Heavy-Duty Motor Control

VoltNex VFDs combine advanced sensorless vector algorithms with rugged physical hardware to guarantee high torque at low speeds and continuous operational uptime.

QUICK SPECIFICATIONS:
• Power: 0.75kW – 1000kW (1-1350 HP)
• Overload: 150% 60s / 180% 3s
• Control: V/F & Sensorless Vector
• Protection: IP20 / IP54 Custom

STANDARDS & COMPLIANCE:
CE Certified
UL / cUL
RoHS
ISO9001
IEC 61800-3
EMC Class A
NEMA 12
IEC 60529

01. SPEED REGULATION
Variable Motor Speed Control
Delivers precise output frequency modulation to match AC motor speed dynamically with continuous operational demand, stabilizing system pressure and flow rates.
02. POWER SAVING
Maximum Energy Efficiency
Substantially lowers kilowatt-hour consumption in partial-load equipment like industrial pumps, blowers, and HVAC fans, optimizing overall plant ROI.
03. MECHANICAL PROTECTION
Soft Motor Starting
Eliminates heavy direct-on-line inrush currents and mechanical torque shock, protecting gearboxes, drive belts, and motor windings from premature wear.
04. GLOBAL STANDARDS
Wide Voltage Compatibility
Fully compatible with worldwide 3-phase grid supplies: 208V / 220V / 380V / 400V / 415V / 440V / 480V with built-in automatic voltage regulation.
05. FULL DIAGNOSTICS
Comprehensive Motor Suite
Integrated real-time safeguards automatically protect against Overcurrent, Over/Undervoltage, Overload, Short Circuit, Overtemperature, and Phase Loss.
06. SMART INTEGRATION
Industrial Communication
Equipped with standard RS485 / Modbus-RTU terminals and expandable option cards for effortless integration into modern PLC and SCADA industrial networks.

Looking for Customized VFD Enclosures or B2B Pricing?
VoltNex engineers build tailored drive systems to fit your exact motor specs and environmental conditions.
TALK TO A VFD SPECIALIST →

 

 

TECHNICAL SELECTION GUIDE

How to Select the Right Variable Frequency Drive

Follow this 5-step engineering framework to match the ideal VoltNex VFD specs with your motor, grid, and application demands.

STEP 01
Motor Power (kW / HP)

Match drive capacity to motor rated output (e.g., 15kW motor → 15kW VFD). Always cross-check motor full-load current (FLA).

Tip: For heavy inertia starting, size up one VFD rating level.
STEP 02
Motor Voltage

Confirm operating supply voltage to prevent under-voltage fault tripping or motor insulation damage.

208V 220V 380V 400V 415V 440V 480V
STEP 03
Motor Phase

Built for standard Three-Phase (3-Phase) industrial power distribution networks for continuous stability.

STEP 04
Load Type & Application Matching
Variable Torque (VT)
Torque increases with speed squared:
• Industrial Pumps
• Centrifugal Fans
• HVAC Systems
Constant Torque (CT)
Requires steady high torque across speeds:
• Belt Conveyors
• Air Compressors
• Hoists & Cranes
• Machine Tools
STEP 05
Duty Requirement & Overload Class
Normal Duty (ND): 120% overload capability for 60s. Designed for light fans & standard pumps.
Heavy Duty (HD): 150% overload for 60s / 180% for 3s. Essential for heavy inertia & friction.
High Starting Torque & Continuous Duty: Guarantees continuous 24/7 operation without thermal tripping.

 

 

MOTOR CONTROL COMPARISON

VFD vs Other Motor Control Technologies

Compare Variable Frequency Drives (VFD) with Soft Starters and Direct-On-Line (DOL) Starters to choose the right control method for your system.

Feature / Capability VFD (Drive) Soft Starter DOL Starter
Speed Control ✓ ✕ ✕
Frequency Control ✓ ✕ ✕
Soft Start Capability ✓ ✓ ✕
Energy Saving Potential ✓ Limited ✕
Motor Protection ✓ ✓ Basic
Variable Speed Operation ✓ ✕ ✕
Pump & Fan Control Excellent Limited Basic
Conveyor System Control Excellent Limited Basic

ENGINEERING SELECTION SUMMARY

A Variable Frequency Drive (VFD) is preferred when the application requires continuous motor speed control, adjustable frequency, process optimization, or variable-speed operation. While Soft Starters and DOL Starters only manage motor starting currents, a VFD provides complete control over torque, speed, and energy consumption throughout the entire operating cycle.

 

 

FACTORY DIRECT & OEM SERVICES

Custom Variable Frequency Drive & OEM / ODM Solutions

Partner directly with a leading industrial manufacturer. We provide end-to-end custom VFD engineering, private labeling, and tailored firmware for machinery OEMs and global distributors.

FLEXIBLE CAPACITY
Custom Power Rating
0.75kW – 500kW+

Wide range coverage from compact micro drives to heavy-industrial high-power cabinets.

GLOBAL GRID ADAPTABILITY
Custom Voltage Input
208V – 480V (1-Ph / 3-Ph)

Tailored for North American 208V/230V/480V, European 400V, and Asian grid standards.

PRECISION SPEED
Custom Frequency Output
50Hz / 60Hz / Up to 1000Hz

Standard 50/60Hz industrial setups plus high-frequency options for specialized high-speed spindles.

ADVANCED ALGORITHMS
Control & Firmware Mode
V/F & Sensorless Vector

Optimized torque response, heavy starting torque (150% at 0.5Hz), and specialized macro parameters.

SMART INTEGRATION
Industrial Bus & Comms
RS485 / Modbus-RTU / CAN

Seamless connectivity with PLCs, HMIs, building automation, and remote IoT management platforms.

BRAND MANUFACTURING
Full OEM & ODM Services
Private Label & Enclosures

Custom logo silk-screening, unique housing designs, branded packaging, and technical specifications.

DIRECT FACTORY TECHNICAL SUPPORT
Need a Custom VFD Solution for Your Motor or Equipment?

Send us your Motor Nameplate or System Requirements. Our senior drive engineers will review your specs and provide a matched technical quotation within 24 hours.


SEND MOTOR NAMEPLATE →


Get Engineering Advice

 

 

QUALITY ASSURANCE & MANUFACTURING EXCELLENCE

VFD Manufacturing & Quality Control Standards

Every VoltNex Variable Frequency Drive undergoes rigorous multi-stage electronic inspection, high-temperature burn-in, and full-load motor simulation testing before dispatch.

STAGE 01 — ELECTRONICS
PCB & Control Board Automated Inspection

High-speed SMT placement with 100% AOI (Automated Optical Inspection) and X-ray testing to eliminate micro-soldering defects. Triple-proof conformal coating is applied to isolate control circuit boards from dust, moisture, and chemical corrosion.

Key Verification: Conformal Coating Thickness & Component Soldering Integrity
STAGE 02 — POWER & COOLING
IGBT Module & Thermal Management Testing

Rigorous thermal paste application and torque-controlled assembly for industrial IGBT power modules. Independent air-duct design and cooling system performance tests ensure continuous heat dissipation under high switching frequencies.

Key Verification: Thermal Resistance Calibration & Forced-Air Duct Airflow
STAGE 03 — SAFETY & PROTECTION
Overcurrent, Overvoltage & Protection Tuning

Hardware-level fault injection testing including instantaneous overcurrent (180% load peak), DC bus overvoltage, under-voltage fault tripping, phase loss detection, and short-circuit protection calibration.

Key Verification: Millisecond Hardware Fault Response & Phase-Loss Isolation
STAGE 04 — RELIABILITY
Full-Load High-Temp Burn-In & Motor Load Test

100% of VFD units undergo extended burn-in testing under full thermal stress. Drives are connected to dynamometer motor test benches to simulate real-world dynamic acceleration, heavy load torque, and continuous 24/7 operation.

Key Verification: 100% Full-Load Motor Load Simulation & Dynamic Response

FACTORY ACCEPTANCE TEST (FAT) GUARANTEE
Final Electrical Inspection & Compliance Certification

Before packaging, every VFD undergoes final dielectric strength withstand testing, grounding continuity checks, and firmware parameter resetting. Test reports are archived with unique serial numbers for 100% quality traceability.

100% FAT PASSED

 

 

TECHNICAL PARAMETERS & CONFIGURATION

Industrial Variable Frequency Drive Specifications

Comprehensive technical specifications for our standard industrial VFD line. Full custom engineering and OEM modifications available upon request.

Specification Typical Configuration
Product Type Variable Frequency Drive / AC Drive / VFD Inverter
Power Range 0.75kW – 500kW+ (0.75 hp – 670 hp)
Input Voltage 208V / 230V / 380V / 400V / 415V / 480V (±15%)
Input Phase 1-Phase (208V–240V) / 3-Phase (208V–480V)
Input Frequency 50Hz / 60Hz (Auto-Sensing 47Hz–63Hz)
Motor Compatibility AC Induction Motors, Permanent Magnet Synchronous Motors (PMSM)
Control Mode V/F Control, Sensorless Vector Control (SVC), Closed-Loop Vector Control
Output Frequency 0.00 – 600.00Hz (High-Frequency Spindle Options up to 1000Hz)
Starting & Stop Method VFD Soft Start / Smooth Acceleration & Deceleration Ramp Curves
Protection Features Overcurrent, Overvoltage, Undervoltage, Motor Overload, Short Circuit, Phase Loss, Overheating
Cooling System Forced Air Cooling with Smart Temperature-Controlled Fans
Display & Interface Digital LED/LCD Keypad, External Potentiometer Support, Detachable Control Panel
Communication Protocol RS485 / Modbus-RTU, CANopen / PROFIBUS Optional
Target Applications Industrial Pumps, HVAC Fans, Air Compressors, Conveyors, CNC Spindles, Extruders
Customization Services OEM / ODM / Private Label / Custom Firmware / Enclosure Redesign
Supply & Distribution Direct China Factory Wholesale / Global Export Logistics & OEM Support

WIDELY USED IN

132kW 175HP 3 Phase Variable Frequency Drive VFD at 42.3Hz for Large Industrial Water Pumps and Pump Station Energy Saving Control | VoltNex Power

132kW 175HP VFD for Industrial Water Pumps

90kW 120HP 3 Phase Variable Frequency Drive VFD at 38.7Hz for Large HVAC Systems, Industrial Ventilation Fans and Air Handling Units | VoltNex Power

90kW 120HP VFD for Industrial HVAC Fans

160kW 215HP High Performance Variable Frequency Drive VFD at 50.0Hz for Heavy Duty Screw Air Compressor Stepless Speed Regulation | VoltNex Power

 160kW 215HP VFD for Screw Air Compressors

55kW 75HP 3 Phase Industrial Variable Frequency Drive VFD at 26.5Hz for Long Distance Belt Conveyors, Logistics and Bulk Material Handling Equipment | VoltNex Power

55kW 75HP VFD for Belt Conveyor Equipment

15kW 20HP 3 Phase Precision Variable Frequency Drive VFD at 35.2Hz for Large CNC Machine Tools and Machining Center Spindle Control | VoltNex Power

20HP VFD for CNC Machine Spindle Control

110kW 150HP 3 Phase General Purpose Variable Frequency Drive VFD at 48.5Hz for Automated Factory Manufacturing Production Lines | VoltNex Power

110kW 150HP VFD for Factory Production Lines

30kW 40HP 3 Phase Stable Variable Frequency Drive VFD at 28.8Hz for High-Speed Spinning, Weaving and Large Textile Processing Machinery | VoltNex Power

30kWVFD for Textile Processing Machinery

250kW 335HP Heavy Duty Variable Frequency Drive VFD at 41.6Hz for Mining Machinery, Mine Hoists and Underground Transport Equipment | VoltNex Power

335HP Heavy Duty VFD for Mining Equipment

200kW 270HP 3 Phase Variable Frequency Drive VFD at 32.1Hz for Large Scale Wastewater Treatment Plants and Water Purification Equipment | VoltNex Power

S200kW VFD for Wastewater Treatment Plants

MOTOR CONTROL TECHNOLOGY COMPARISON

Variable Frequency Drive (VFD) vs. Soft Starter vs. DOL Across the Line

Selecting the right motor starting and speed control method is critical for energy efficiency, mechanical lifespan, and process automation. While Soft Starters only reduce inrush current during startup, Industrial VFDs (AC Drives) provide full dynamic speed control, continuous torque regulation, and maximum energy savings.

Feature / Factor Variable Frequency Drive (VFD) Soft Starter / Direct-On-Line
Speed & Frequency Control Continuous Variable Speed (0–600Hz) Fixed Rated Speed (50Hz / 60Hz Only)
Inrush Current Reduction Eliminates Inrush Peak (100–150% Rated Current) Soft Starter: 300–400% | DOL: 600–800% Peak
Energy Optimization Up to 30%–50% Energy Savings on Fans & Pumps No Energy Savings During Continuous Running
Starting Torque Control High Starting Torque (150% at 0.5Hz Vector Mode) Reduced Torque During Startup (Low Heavy-Duty Torque)
Process Automation Built-in PID Control & Modbus / CAN Bus Comms Basic Start/Stop Signals (No Dynamic Closed-Loop)
Mechanical Stress & Wear Smooth Acceleration/Deceleration (Zero Water Hammer) Moderate to Severe Mechanical Shock on Belts/Gears

ADVANTAGE 01

Precise Speed & Process Control

Unlike soft starters that only run motors at 100% speed, VFDs continuously adjust motor RPM to match real-time production demands, optimizing CNC, extruder, and conveyor performance.
ADVANTAGE 02

Substantial Energy Reduction

By leveraging Affinity Laws for centrifugal pumps and HVAC fans, reducing motor speed by just 20% with a VFD can cut electrical power consumption by nearly 50%.
ADVANTAGE 03

Superior Low-Speed Torque

Soft starters reduce voltage, which severely degrades starting torque. VoltNex sensorless vector VFDs deliver up to 150% full rated torque even at zero speed, starting heavy industrial loads effortlessly.
ADVANTAGE 04

Extended Equipment Lifespan

Controlled acceleration and custom S-curve deceleration prevent violent mechanical shocks, eliminating hydraulic water hammer in piping networks and thermal stress on motor windings.
ADVANTAGE 05

Integrated Smart Automation

Equipped with internal PID controllers and RS485/Modbus communications, VoltNex VFDs directly receive feedback from pressure, flow, or temperature sensors without requiring extra external PLCs.
ADVANTAGE 06

All-in-One Motor Protection

VFDs feature instant millisecond hardware response to overcurrent, DC bus overvoltage, phase loss, ground faults, and thermal overload, drastically reducing motor burnout rates.

Need Assistance Selecting the Right VFD for Your Motor?
Consult with Voltnex Power drive engineers to calculate energy savings, choose the optimal VFD power rating, and get custom engineering advice.

 

 

 

Flexible VFD Customization for Diverse Industrial Project Requirements

Customize the VFD based on your operating voltage, motor power, load profile and installation conditions.

 

0.75kW-1000kW 3 Phase and Single Phase Variable Frequency Drive VFD for Industrial Motor Loads, AC Motor Speed Control and Automation | VoltNex Power

01 — Capacity & Phase

Supports 0.75kW to 1000kW, single-phase & three-phase configurations to match diverse industrial motor loads.

Wide Voltage Range VFD Variable Frequency Drive 208V to 690V Global Voltage Options for European and American Market Projects | Industrial AC Drive | VoltNex Power

02 — Input & Output Voltage

Wide voltage coverage from 208V to 690V, customizable to satisfy European, American and global project standards.

High Precision Vector Control VFD with Stable Speed and Torque Output for Demanding Industrial Automation Applications | AC Variable Frequency Drive | VoltNex Power

03 — Regulation Accuracy

High-precision vector control delivers steady speed and torque performance for rigorous industrial working conditions.

Industrial Grade VFD with Comprehensive Protection Functions and Optional Bypass System for Continuous Operation Safety | AC Variable Frequency Drive | VoltNex Power

04 — Protection & Bypass

Complete electrical protection suite, equipped with optional bypass design to guarantee uninterrupted system operation.

Customizable VFD Enclosure IP20 IP54 Protection Grade with Natural and Forced Air Cooling Solutions | Industrial Variable Frequency Drive Cabinet | VoltNex Power

05 — Enclosure & Cooling

Multiple enclosure ratings IP20 IP54 available, selectable natural or forced air cooling for various installation environments.

Smart VFD with Touch Screen HMI, RS485 Modbus Communication and Remote Industrial Monitoring Function | Intelligent Variable Frequency Drive | VoltNex Power

06 — Control & Communication

Intuitive HMI operation, built-in RS485 Modbus, supporting remote monitoring and seamless industrial system connection。

FREQUENTLY ASKED QUESTIONS

An industrial Variable Frequency Drive (VFD), also called an AC drive, variable speed drive (VSD), adjustable frequency drive (AFD), frequency inverter, inverter drive or AC motor controller, is a power electronic device used to control the speed, frequency, torque and acceleration of AC motors. VoltNex Power industrial VFDs are designed for applications including industrial pumps, fans, blowers, HVAC systems, air compressors, conveyors, CNC machines, textile machinery, extruders, production lines, mining equipment and automated manufacturing systems.

VoltNex Power provides VFD and AC drive solutions from 0.75kW to 1000kW, covering approximately 1HP to 1350HP depending on the selected product series and configuration. Common industrial ratings include 7.5kW, 11kW, 15kW, 18.5kW, 22kW, 30kW, 37kW, 45kW, 55kW, 75kW, 90kW, 110kW, 132kW, 160kW, 200kW, 250kW, 315kW, 400kW, 500kW, 630kW, 800kW and 1000kW+ custom VFD systems.

Yes. VoltNex Power supports three-phase VFDs and selected single-phase input VFD configurations according to the required motor power and electrical system. Three-phase AC drives are widely used for industrial motors and high-power applications, while suitable single-phase input models can be used for smaller motor systems. The VFD should always be selected according to the motor nameplate voltage, current, phase and application requirements.

VoltNex Power offers VFD configurations for common industrial voltage systems including 208V, 220V, 230V, 240V, 380V, 400V, 415V, 440V and 480V, with additional voltage configurations available for specific projects and VFD series. For international OEM projects, the VFD can be configured according to the destination country’s power supply, motor rated voltage and frequency requirements.

V/F (Voltage/Frequency) control provides a practical and economical method for controlling common variable-speed motor loads such as pumps, fans and blowers. Sensorless Vector Control (SVC) provides more advanced speed and torque regulation and can deliver improved low-speed performance and starting torque for demanding applications. Closed-loop vector control can also be considered when encoder feedback and higher speed-control accuracy are required.

VFD selection should not be based on motor kW or HP alone. Important parameters include motor rated power, full-load current (FLA), voltage, phase, frequency, load type, starting torque, overload requirement, acceleration time and operating environment. For example, a 15kW motor may normally use a 15kW VFD, but a heavy-inertia conveyor, compressor, hoist or other high-starting-torque application may require a higher-duty or larger-rated VFD. Sending the motor nameplate allows VoltNex Power engineers to recommend a suitable AC drive.

Yes. Industrial Variable Frequency Drives are suitable for both variable-torque and constant-torque motor loads. Typical variable-torque applications include centrifugal pumps, water pumps, wastewater pumps, HVAC fans and blowers. Constant-torque applications can include belt conveyors, industrial air compressors, hoists, cranes, machine tools and material handling equipment. The VFD control mode and overload rating should be selected according to the specific load.

Yes, particularly in applications where motor speed can be reduced according to actual process demand. VFDs can regulate motor speed rather than continuously operating a motor at fixed full speed, which can provide significant energy-saving potential for centrifugal pumps, cooling fans, HVAC systems and blowers. Actual energy savings depend on motor efficiency, load profile, operating hours, process requirements and the amount of speed reduction.

Depending on the VFD model, VoltNex Power drives can include protection and diagnostic functions such as overcurrent, overvoltage, undervoltage, overload, short circuit, phase loss, motor overheating and VFD overtemperature protection. Heavy-duty models can also be configured for higher overload capacity, such as 150% overload for 60 seconds and 180% for 3 seconds, subject to the specific product series and operating conditions.

Yes. Selected VoltNex Power VFDs support RS485 and Modbus RTU communication, with optional industrial fieldbus interfaces depending on the model. The AC drive can be integrated with PLC, HMI, SCADA, industrial control systems, building automation and smart factory networks for motor control, parameter setting, operating-status monitoring and fault information exchange.

Yes. VoltNex Power supports customized VFD enclosures and industrial drive cabinets, including IP20 and IP54 configurations where applicable. Cabinet solutions can incorporate circuit breakers, contactors, reactors, EMC filters, braking components, control equipment and communication interfaces. Depending on the VFD power and installation environment, natural air cooling or forced air cooling with temperature-controlled fans can be selected for thermal management.

Yes. VoltNex Power is a China VFD manufacturer and factory providing OEM, ODM, private-label and customized industrial AC drive solutions. Customization can include VFD power rating, kW/HP capacity, input voltage, phase configuration, 50Hz/60Hz frequency, V/F or vector control, enclosure design, IP protection, cooling system, HMI, RS485/Modbus communication, firmware parameters and branding. We supply VFDs directly to machinery manufacturers, distributors, system integrators, EPC contractors and industrial customers worldwide.