Product Specifications
| Brand Name: | Volcano Electric | Model Number: | HSEPM38H350-188N27-S05 | Type: | Brushless DC motor |
| Output Power: | 3.5KW | DC Voltage: | 380VAC | Speed Range: | 2700 RPM |
| Speed Regulation | 0-10V/RS485 | Braker: | Optional | Insulation Class: | Class F |
| Enclosure: | IP54 | Poles: | 16P | Wire: | 100% copper |
| Housing: | Aluminum | Efficiency: | IE 5.0 | ||
| Duty: | S1 | Place of Origin: | Zhejiang, China (Mainland) | Standard: | IEC standard |
| Application: | Data Center Cooling, HVAC(Heating, Ventilation, and Air Conditioning), Medical Ventilation Systems, Livestock Farming Environments | ||||
Product Description
EC outer rotor fan motors have many advantages compared to traditional AC fan motors:
Compact & Space-Saving
Direct integration of rotor and load reduces volume by 30%-50% and weight by 20%-30% compared to same-power internal rotor motors. Suitable for embedded installation (e.g., equipment interiors, narrow enclosures) with no need for transmission space.
High Energy Efficiency & Low Operating Costs
Motor efficiency reaches 85%-95%, meeting IE4-IE5 high-efficiency standards—saving 30%-60% more electricity than traditional AC motors. During variable-speed operation, energy consumption decreases linearly with load demand, eliminating “overcapacity waste.”
Stable Operation & Ultra-Low Noise
No friction noise from transmission parts. Coaxial rotation of rotor and load ensures high dynamic balance precision (usually ≤0.5g), with operating noise 3-8dB lower than internal rotor motors. Some models achieve noise levels below 50dB.
Flexible Speed Regulation & Strong Adaptability
Built-in EC control unit (ECU) supports 0-100% stepless speed regulation. Compatible with 0-10V/4-20mA analog control and RS485/MODBUS digital control, enabling integration with PLCs and IoT systems for diverse load requirements.
Photovoltaic
The high-voltage motor can be combined with the photovoltaic unit and storage battery through a unique High-voltage solar energizer which makes solar energy,battery power and grid power complement each other to supply power to multiple motors 24/7. These solution form a high-efficiency conversion unit to optimize solar energy utilization and reduce electricity costs significantly.
Waiting for you and feel free to contact our team at info@volcanomotors.com for any technical support.
Configuration

EC Outer Rotor Motor HSE188 list
| Model Definition | Rated Voltage(VAC) | Rated Power(kW) | Rated Speed(RPM) | IP Rating | Operation Temperature | Speed Regulation |
| HSEPM38H220-188N17-S05 | 380 | 2.2 | 1700 | IP54 | -25℃~+60℃ | 0-10V/RS485 |
| HSEPM38H250-188N24-S05 | 380 | 2.5 | 2400 | IP54 | -25℃~+60℃ | 0-10V/RS485 |
| HSEPM38H350-188N16-S05 | 380 | 3.5 | 1600 | IP54 | -25℃~+60℃ | 0-10V/RS485 |
| HSEPM38H350-188N27-S05 | 380 | 3.5 | 2700 | IP54 | -25℃~+60℃ | 0-10V/RS485 |
| HSEPM38H400-188N21-S05 | 380 | 4 | 2100 | IP54 | -25℃~+60℃ | 0-10V/RS485 |
| HSEPM38H550-188N17-S05 | 380 | 5.5 | 1700 | IP54 | -25℃~+60℃ | 0-10V/RS485 |
Advantages of EC Outer Rotor motors
- Structural Design: Utilizes 10-,12-,or 16-pole sinusoidal wave magnet design with rotor outer diameters of Φ102, Φ138,and Φ188.
- Power & Speed: Support integrated drive motors ranging from 0.55-7.5kW. Customizable ECmotor speeds tailored to specific application requirements.
- Voltage Compatibility: Supports multi-voltage configurations,including high-voltage motor drive control series(220VAC, 380VAC, 110VAC)
- Extended Voltage Range: Customizable wide-voltage startup and operation(±30% tolerance)
- Speed Control: RS485/Modbus remote communication control:0-10V stepless speed regulation.
- Positioning Precision: Configurable control modes, Sensorless, Magnetic encoder, Photoelectric encoder, Rotary encoder, Sin/Cos encoder, Absolute encoder
Customized Motors
For customized Motors, please contact our technician, Ordinary, we have to know the following information to get a professional proposal:
- Brushed or Brushless: Customer preference
- Output power (W): Horsepower/watts/torque rated at full load speed
- Voltage (V): i.e 12V DC …….. 450V AC
- Motor speed (RPM): Revolutions per minute of the shaft at full load Voltage
- Application: e.g. traction, air condition, etc.
- Duty: Most motors are rated continuous. Some applications however may use motors designed for intermittent duty
- Configuration/Frame: Our products are according to IEC standard, we also can customize the flange and shaft according to the customer drawing
- Controller function: e.g. forward/reverse, variable speed, acceleration profile, etc.
Volcano Motor









