VFD 300 S3 Series – Single Phase 220V Input / Three Phase 380V Output
The VFD 300 S3 Series converts single-phase 220V input to three-phase 380V output, providing a cost-effective solution for running three-phase 380V motors where only single-phase power is available.
Key Features
- Output Frequency: 0-600Hz
- Overload Capacity: 150% rated current for 1 minute, 180% for 3 seconds
- Control Method: Optimized SVPWM control
- Control Mode: Sensorless vector control
- Frequency Resolution: Digital 0.01Hz; Analog max frequency ×0.025%
- Automatic torque boost: 0.1%-30.0%
- Built-in PID closed-loop control
- Multi-speed operation via built-in PLC
- RS485 communication support
- Comprehensive protection functions
Model Specifications
| Model | Rated Current | Dimensions (H×W×D mm) | IGBT |
|---|---|---|---|
| 300-0.75KWG-S3 | Input 4.5A / Output 2.5A | 165×98×128 | Single Tube |
| 300-1.5KWG-S3 | Input 8A / Output 3.7A | 165×98×128 | Single Tube |
| 300-2.2KWG-S3 | Input 12A / Output 5A | 165×98×128 | Single Tube |
| 300-3KWG-S3 | Input 15A / Output 6.8A | 165×98×128 | Single Tube |
| 300-4KWG-S3 | Input 18A / Output 9A | 187×100×137.5 | Single Tube |
| 300-5.5KWG-S3 | Input 25A / Output 13A | 187×100×137.5 | Single Tube |
| 300-7.5KWG-S3 | Input 34A / Output 17A | 220×130×177.5 | Single Tube |
| 300-11KWG-S3 | Input 50A / Output 25A | 220×130×177.5 | Single Tube |
Electrical Specifications
| Power Range | Input Voltage | Output Voltage | Output Frequency |
|---|---|---|---|
| 0.75kW – 11kW | Single Phase 220V 50/60Hz | Three Phase 0-380V | 0-600Hz |
Why Choose VFD300 S3 Series?
Single-Phase In, Three-Phase 380V Out
Drive standard 380V three-phase motors from a regular 220V single-phase outlet — perfect for workshops without 3-phase supply.
Up to 30% Energy Reduction
Variable speed matches actual process demand. Payback typically within 12 months for pump and fan applications.
CNC-Ready Precision
0.01Hz frequency resolution and sensorless vector control deliver smooth spindle speed for CNC machines.
Plug-and-Play Setup
Pre-configured V/F curves for common applications. Most setups running within 30 minutes.
Quick Selection Guide — S3 Series
| Your Application | Recommended Model | Key Tip |
|---|---|---|
| CNC Machine Spindle | G Type | Add braking unit for fast deceleration |
| Small Water Pump | P Type | PID pressure control; soft start protects pipes |
| Workshop Fan / Exhaust | P Type | Variable torque; multi-speed for shift changes |
| Mixed Loads | G Type | Safe default for unknown load types |
Quick Specs at a Glance
| Input Voltage | 1PH AC 200V ~ 240V |
| Output Voltage | 3PH AC 0 ~ 440V |
| Power Range | 0.75kW – 11kW |
| Output Frequency | 0 – 600Hz |
| Control Mode | Sensorless Vector / V/F |
| Overload Capacity | G: 150%/60s, P: 120%/60s |
| Best For | Driving standard 380V motors from 220V single-phase supply |
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Output Frequency | 0-600Hz |
| Carrier Frequency | 1.0-15.0kHz, automatically adjusts based on temperature and load |
| Control Method | Optimized space voltage vector SVPWM control |
| Control Mode | Sensorless vector control with optimal low-frequency dead zone compensation |
| V/F Control | Linear, multi-point, square root (selectable) |
| Frequency Resolution | Digital setting: 0.01Hz; Analog setting: max frequency × 0.025% |
| Starting Frequency | 0.0-10.0Hz |
| Starting Torque | 0.5Hz / 180% (Sensorless Vector Control); 1Hz / 180% (V/F) |
| Torque Boost | Automatic torque boost; Manual torque boost 0.1%-30.0% |
| Speed Control Accuracy | ±0.5% of maximum speed (Sensorless Vector Control) |
| Speed Adjustment Range | 1:100 (Sensorless Vector Control) |
| Overload Capacity (G-type) | 150% rated current for 1 minute, 180% rated current for 3 seconds |
| Overload Capacity (P-type) | 120% rated current for 60 seconds, 150% rated current for 10 seconds |
| Acceleration/Deceleration | Linear or S-curve, 4 sets of accel/decel time (0.1-3600s) |
| DC Braking | DC braking at start and stop |
| Jog Operation | Jog frequency: 0.0Hz to max frequency; Jog accel/decel time: 0.1-3600s |
| Built-in PID | Closed-loop control for pressure, flow, temperature regulation |
| Multi-speed Operation | Up to 16-speed via built-in PLC or control terminals |
| Run Command Channel | Control panel, control terminals, RS485 communication |
| Frequency Setting | Digital keypad, analog input (AI1/AI2), RS485, multi-speed, simple PLC, PID |
| Digital Input | 5 programmable digital inputs (DI1-DI5), DI5 supports 20kHz high-speed pulse input |
| Analog Input | 2 channels (AI1, AI2): 0-20mA / 0-10V selectable |
| Analog Output | 2 channels (AO1, AO2): 0-20mA or 0-10V selectable |
| Relay Output | 2 relays: NO/NC, rated AC250V 3A / DC30V 1A |
| Communication | RS485 Modbus RTU (standard) |
| Protection | Overcurrent, overvoltage, undervoltage, overheat, overload, input/output phase loss, motor overheat (PTC), ground fault |
| Display | LED display showing set frequency, output frequency, output voltage, output current, etc. |
| Operating Temperature | -10°C to +50°C (derating above 40°C) |
| Storage Temperature | -20°C to +60°C |
| Humidity | ≤95% RH, non-condensing |
| Altitude | ≤1000m (derate 1% per 100m above 1000m) |
| Protection Degree | IP20 (standard); IP54 available on request |
| Installation | Wall mount or flange mount |
| Cooling | Forced air cooling |
| Quality Assurance | 100% full-load aging test before shipment |
Model Naming Convention
SHZK VFD300 models follow a standardized naming system for easy identification:
XXX – 055 G B – T4 – L
| Position | Code | Description |
|---|---|---|
| Series | 300 | VFD300 Series |
| Power Rating | 007 | 0.75 kW |
| 015 | 1.5 kW | |
| 055 | 5.5 kW | |
| 720 | 72 kW | |
| 800 | 80 kW | |
| Motor Type | G | General purpose (standard industrial) |
| P | Fan & Pump type (light-duty, 120% overload) | |
| PV | Solar/PV dedicated (MPPT/CVT solar tracking) | |
| Braking Unit | B | With built-in braking unit |
| (blank) | Without braking unit | |
| Voltage Class | T4 | 3PH AC 380-480V Input / 3PH 0-480V Output |
| T2 | 3PH AC 200-240V Input / 3PH 0-240V Output | |
| S2 | 1PH AC 200-240V Input / 3PH 0-240V Output | |
| S3 | 1PH AC 200-240V Input / 3PH 0-400V Output | |
| H2 | 1PH AC 200-240V Input / 1PH 0-240V Output | |
| Reactor Option | (blank) | No reactor |
| -L | With AC output reactor | |
| -T | With DC reactor |
Available Configurations
| Configuration | Model Suffix | Best For |
|---|---|---|
| General Industrial | G | Conveyors, CNC, mixers, general machinery |
| Fan & Pump (Energy Saving) | P | Centrifugal pumps, HVAC fans, blowers (lower overload, optimized for variable torque loads) |
| Solar/PV Dedicated | PV | Solar water pumping, agricultural irrigation, off-grid water supply (MPPT + CVT dual-mode solar tracking) |
Optional Accessories
- Braking Unit (B): Built-in braking resistor for applications requiring fast deceleration (cranes, hoists, elevators)
- AC Output Reactor (-L): Recommended for long motor cable runs (>50m) or multiple motors on one VFD
- DC Reactor (-T): Improves power factor and reduces harmonic distortion for large installations
- Communication Cards: Profibus-DP and Profinet modules available on request for SCADA integration
Applications
Industrial machinery, CNC equipment, conveyor systems, and any application requiring three-phase 380V motor operation from single-phase 220V supply.
OEM & ODM available. Contact us for pricing and technical support.
Control Circuit Wiring Diagrams
The following diagrams show the control circuit terminal layout and wiring for each main board type used in the 300 Series.
Main Circuit Terminal Layout
Main Circuit Terminal Layout (R/L1, S/L2, T — PP, PB — U, V, W — G, E)
A-Type Main Board Wiring Diagram
Wiring Notes
- Analog voltage signals require shielded cables; wiring distance should not exceed 20m.
- In severe interference environments, equip analog signal source side with filter capacitor or ferrite core.
- Terminal assignments may vary by model — refer to actual product labeling.