Key facts
- Power range: 0.75 kW to 75 kW
- Input: three-phase 220V (200-240V); output: three-phase 220V
- Series name: SHZK 300N T2 (three-phase 220V AC drive)
- Control: sensorless vector control (SVC) and V/F control, built-in PID and multi-speed / simple PLC
- Communication: Modbus RTU over RS485; enclosure IP20 standard, IP54 optional
- Certifications: CE (EU LVD 2014/35/EU and EMC 2014/30/EU), ISO 9001:2015, RoHS
- OEM/ODM supported (logo, packaging, voltage, firmware); sample orders accepted
- Factory: Yueqing, Zhejiang, China; contact mail@shzkvfd.com or WhatsApp +86 13757750205
300N T2 Series – Three Phase 220V Input / Three Phase 220V Output
The 300N T2 Series is our full-range three-phase industrial frequency inverter, covering power range from 0.75kW to 75kW. Featuring advanced vector control technology, it delivers precise motor control for demanding industrial applications.
Key Features
- Output Frequency: 0-500Hz standard, up to 3000Hz available on request (high-speed spindle / grinding applications)
- Overload Capacity: 150% rated current for 1 minute, 180% for 3 seconds
- Control Method: Optimized space voltage vector SVPWM control
- Control Mode: Sensorless vector control with optimal low-frequency dead zone compensation
- Frequency Resolution: Digital 0.01Hz; Analog max frequency ×0.025%
- Starting Frequency: 0.0-10.0Hz
- Torque Boost: Automatic / Manual 0.1%-30.0%
- Built-in PID closed-loop control
- Multi-speed operation via built-in PLC or control terminals
- RS485 communication support
- PV Power Tracking: CVT mode, MPPT mode
- Comprehensive protection: overcurrent, overvoltage, undervoltage, overheat, overload
Model Specifications
| Model | Rated Current | Dimensions (H×W×D mm) | Shell Type |
|---|---|---|---|
| 300N-0.75GB-T2 | Input 4.5A / Output 4A | 165×98×128 | Plastic (S) |
| 300N-1.5GB-T2 | Input 8A / Output 7A | 165×98×128 | Plastic (S) |
| 300N-2.2GB-T2 | Input 11A / Output 9.6A | 165×98×128 | Plastic (S) |
| 300N-003GB-T2 | Input 15A / Output 12A | 165×98×128 | Plastic (S) |
| 300N-004GB-T2 | Input 23A / Output 15A | 187×100×137.5 | Plastic (S) |
| 300N-5.5GB-T2 | Input 28A / Output 17A | 187×100×137.5 | Plastic (S) |
| 300N-7.5GB-T2 | Input 36A / Output 25A | 220×130×177.5 | Plastic (S) |
| 300N-011G-T2 | Input 50A / Output 32A | 280×150×196 | Iron |
| 300N-015G-T2 | Input 65A / Output 41A | 280×150×196 | Iron |
| 300N-018G-T2 | Input 76A / Output 50A | 280×150×196 | Iron |
| 300N-022G-T2 | Input 88A / Output 60A | 330×170×235 | Iron |
| 300N-030G-T2 | Input 120A / Output 80A | 380×215×215 | Iron |
| 300N-037G-T2 | Input 150A / Output 100A | 380×215×215 | Iron |
| 300N-045G-T2 | Input 180A / Output 120A | 510×260×260 | Iron |
| 300N-055G-T2 | Input 210A / Output 150A | 510×260×260 | Iron |
| 300N-075G-T2 | Input 239A / Output 253A | 535×260×272 | Iron |
Enclosure Options — S / Y / D / Z
This series offers four enclosure styles — S, Y, D and Z. For ratings up to 11 kW, all four are made of durable plastic housing, and the drive electronics inside are identical — only the housing shape, form factor and dimensions differ, so you can pick the enclosure that best fits your installation.
Compact Enclosure
Compact, lightweight plastic housing for small power ratings — ideal for tight panel spaces.
Black Enclosure
Black plastic moulded housing — a clean, discreet look with identical performance.
Rugged Plastic Enclosure
Robust, rugged plastic enclosure with a sturdy industrial appearance.
Standard Enclosure
Standard plastic housing for ratings up to 800 kW with consistent performance.
Enclosure selection manuals (dimensions, panel cut-outs & terminals):
Electrical Specifications
| Parameter | Specification |
|---|---|
| Input Voltage | Three Phase 220V 50/60Hz |
| Output Voltage | Three Phase 0-220V |
| Output Frequency | 0-500Hz standard (up to 3000Hz on request for high-speed spindle applications) |
| Operating Voltage | Three-phase 220V Input / Three-phase 0-220V Output |
Enclosure: Compact rugged plastic housing (S / Y / D / Z types) for ratings up to 11 kW; metal enclosure from 15 kW upwards
Why Choose 300N T2 Series?
Variable speed control eliminates energy waste from constant-speed motors. ROI typically achieved within 12-18 months.
MPPT/CVT dual-mode solar tracking drives pumps directly from panels — no batteries, no grid connection needed.
Soft start/stop eliminates mechanical stress on pumps, conveyors, and fans. Extended equipment lifespan.
IP20/IP54 options, -10°C to 50°C operation, coated PCBs. Deploy in mines, farms, and factories worldwide.
Quick Selection Guide — T2 Series
| Your Application | Recommended Model | Key Tip |
|---|---|---|
| Solar Water Pump | PV Type | Oversize PV array by 20-30%; use MPPT mode |
| Water Pump / HVAC | P Type | Variable torque; PID built-in for pressure control |
| Conveyor / Mixer / Crusher | G Type | Constant torque; size up 1 level for heavy loads |
| CNC Spindle | G Type | High frequency resolution 0.01Hz; braking unit recommended |
| High Altitude (>1000m) | Derate 1%/100m | Above 4000m, contact our engineers for customization |
Quick Specs at a Glance
| Input Voltage | 3PH AC 200-240V (+10%) |
| Output Voltage | 3PH AC 0 ~ 440V |
| Power Range | 0.75kW – 75kW |
| Output Frequency | 0 – 500Hz up to 3000Hz on request |
| Control Mode | Sensorless Vector / V/F |
| Overload Capacity | G: 150%/60s, P: 120%/60s |
| Protection | OC, OV, UV, OH, OL, Phase Loss, Ground Fault |
| Special Feature | MPPT/CVT Solar Tracking (PV Type) |
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Output Frequency | 0-500Hz standard (up to 3000Hz on request for high-speed spindle applications) |
| 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 |
| PV Power Tracking | CVT mode, MPPT mode |
| 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 300N models follow a standardized naming system for easy identification:
300N-055GB-T4
| Position | Code | Description |
|---|---|---|
| Series | 300N | 300N Series |
| Motor adapter power | 0.75 / 1.5 / 2.2 / 5.5 / 7.5 / 18.5 | Decimal ratings are written as-is, in kW |
| 003 / 011 / 055 / 800 | Whole-number ratings use three digits: 003 = 3 kW, 011 = 11 kW, 055 = 55 kW, 800 = 800 kW | |
| Full range | 0.75 kW – 800 kW across the 300N platform | |
| Motor type | G | Heavy load (constant torque) — standard industrial drives |
| P | Fan / pump type (light duty) — used on S3 models | |
| PV | Photovoltaic DC input with CVT / MPPT tracking — PV-T2 / PV-T4 | |
| 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 |
Common 300N variants
| Variant | Meaning | Used in |
|---|---|---|
| G | Heavy load (constant torque), without built-in braking unit | H2; T2 from 15 kW; T4 from 30 kW |
| GB | Heavy load (constant torque) with built-in braking unit | S2; T2 up to 11 kW; T4 up to 22 kW |
| PB | Fan / pump type (light duty) with built-in braking unit | S3, all ratings |
| PV | Photovoltaic DC input with CVT / MPPT tracking | PV-T2 / PV-T4, all ratings |
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
Heavy industry, mining equipment, large conveyors, HVAC systems, water treatment, oil & gas, manufacturing lines, and PV solar pump systems.
OEM & ODM available. Contact us for pricing and technical support.
Inside the 300N T2 Series: Structure, Quality & Certification
Built in our own SHZK production line, the 300N T2 Series combines a precision power stage with factory-tested reliability. Every unit is 100% full-load aged and QA-inspected before shipping.
Precision power stage — IGBT modules and a layered control PCB.
Efficient cooling — finned heat sink and power module design for sustained torque.
Vector control board — precise speed & torque regulation logic.
Scalable footprint — compare unit sizes from 1.5 kW to 11 kW and beyond.
Factory & Quality Assurance
SMT surface-mount production and 100% full-load aging before delivery — backed by CE, RoHS & ISO 9001 manufacturing.
OEM / ODM Ready
Custom branding, packaging and parameter presets from a MOQ of 50 units — for system integrators and panel builders.
Download 300N T2 Series Technical Documentation (PDF)
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. The board type varies by model and power rating.
Main Circuit Terminal Layout
Main Circuit Terminal Layout (R/L1, S/L2, T — PP, PB — U, V, W — G, E)
A-Type (0.75-11kW) Main Board Wiring Diagram
B-Type (Mid Power) Main Board Wiring Diagram
C-Type (Mid Power) Main Board Wiring Diagram
D-Type (High Power) Main Board Wiring Diagram
E-Type (Max Power) 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.
FAQ About 300N T2 Series
What is the difference between VFD, AC drive, and frequency inverter?
VFD (Variable Frequency Drive), AC drive, and frequency inverter are different names for the same device. They all control the speed of an AC motor by varying the frequency and voltage of the power supplied. “VFD” is most common in North America, “AC drive” is widely used globally, and “frequency inverter” is common in Europe and Southeast Asia.
What applications is the T2 Series suitable for?
The 300N T2 Series three-phase VFD is ideal for pumps, fans, HVAC systems, air compressors, conveyors, mixers, crushers, and other industrial equipment requiring precise speed control and energy savings.
How to choose the right VFD for my motor?
Match the VFD rated power to your motor power rating. For pump and fan applications, you can often use a VFD one size smaller. For constant torque loads like conveyors, match exactly. Consider input voltage, output current, and application requirements. Contact our technical team for sizing assistance.
Related Products