
1. What is an External Frequency Converter?
An external frequency converter is a standalone device that adjusts the frequency and voltage of electrical power supplied to motors, enabling precise speed control. SHUYI’s external frequency converter offers seamless adjustment from 0Hz to 400Hz, optimizing performance across various industries by reducing energy consumption and mechanical stress.
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2. How SHUYI’s External Frequency Converter Works
SHUYI’s external frequency converter operates through a two – stage process:
- Power Conversion:
First, it converts incoming AC power into DC using advanced IGBT modules, filtering out electrical noise. - Frequency & Voltage Regulation:
Then, it transforms the DC power back into stable AC at the desired frequency. The built – in control system maintains a consistent voltage – frequency ratio (V/F), ensuring smooth motor operation under different loads.
3. Core Advantages of SHUYI’s Converters
SHUYI’s external frequency converters stand out for efficiency and versatility:
- High – Precision Control:
Achieve frequency accuracy within ±0.1Hz, perfect for applications requiring stable motor speeds, like CNC machines. - Wide Compatibility:
Support input voltages from 100V to 690V, suitable for single – phase and three – phase motors. - Robust Design:
With an IP65 – rated enclosure, these converters resist dust and water, ideal for harsh industrial environments. - Energy – Saving Features:
Cut electricity costs by up to 30% in variable – load scenarios, thanks to optimized power output.

4. Key Applications
SHUYI’s external frequency converter excels in multiple sectors:
- Manufacturing:
Control conveyor belts and pumps, reducing production downtime by 20%. - HVAC Systems:
Adjust fan and compressor speeds based on real – time demand, improving energy efficiency. - Renewable Energy:
Stabilize power output from wind or solar generators, ensuring grid – ready frequencies.
5. Why Choose SHUYI?
Opt for SHUYI’s external frequency converters for:
- Cost – Effective Performance:
Offer competitive pricing, 20% lower than similar models without sacrificing quality. - Global Standards Compliance:
Meet international certifications like CE, UL, and IEC, ensuring reliability worldwide. - Responsive Support:
Provide 24/7 multilingual technical assistance for seamless integration and operation.
Web: www.shuyitop.com
Tel/Fax: 0086-577-62840011
Wechat/WhatsApp: 008613355775769
Zhejiang SHUYI Electric Co., LTD, Focus On Switches With 30 Years.