Frequency converter AC 220V 380V 0,75KW-11KW 3-phase 50HZ 60HZ speed controller

A 3-phase frequency converter is professional electrical equipment designed to regulate the speed and power of AC electric motors. This versatile converter transforms 220V single-phase current into a 3-phase 220V or 380V output, suitable for motors with a power range of 0,75KW-11KW. The 3-phase frequency converter ensures energy-efficient motor operation, reduces electricity consumption, and is an invaluable solution for industrial, ventilation, pump, and other systems.

3-phase frequency converter — main features

• Universal input and output mode — converts 220V single-phase current into 3-phase 220V or 380V, providing flexibility for various electrical grid configurations and motor type selections.
• Analog input 4-20ma or 0-10V — integrated sensors allow for direct connection of pressure sensors and other analog devices to continuously control the motor.
• PID control function — provides constant pressure maintenance for 3-phase pumps, ideal for water supply and pneumatic systems without requiring engineering expertise.
• 16-segment programming — you can set up to 16 different speed levels, automating complex production operations with time scheduling.
• Current limiting technology — automatically clears sudden current spikes, protecting the motor from frequent overload failures and saving circuit breakers.
• Power dip tolerance — Power Dip Ride Through function keeps the converter active even if the grid voltage drops suddenly, without interrupting the process.
• Multi-layer motor protection — monitors short circuits, phase loss, overcurrent, overvoltage, undervoltage, overheating, and other risk factors.

Technical specifications

• Power range: 0,75KW-11KW
• Input voltage: AC 220V single-phase
• Output voltage: AC 220V or 380V 3-phase
• Frequency: 50HZ / 60HZ
• Analog input: 4-20ma / 0-10V
• Relay output: internal relay
• Maximum carrier frequency: 400HZ
• Programming segments: up to 16

Who is it suitable for and how to use it?

The 3-phase frequency converter is ideal for professionals — engineers, HVAC specialists, production managers, and electricians. Use it for central ventilation, heat pumps, compressors, textile machinery, and specialized equipment. To install, first disconnect the power, connect the 220V single-phase voltage to the input, connect the 3-phase motor to the output, and then set the parameters via the LCD menu. The 3-phase frequency converter is reliable, long-lasting, and provides a quick return on investment through energy savings.

Buyer questions

Q: Can the frequency converter work with single-phase motors?
No, this converter is designed only for 3-phase motors. Single-phase motors do not have phase timing and have a different construction. If you need a single-phase system, look for a specialized converter model for that specific purpose.

Q: How do I connect a pressure sensor to the frequency converter?
The pressure sensor is connected to the 4-20mA or 0-10V analog input. Set the PID parameters via the menu: P0-15=9 to set the carrier frequency higher, then adjust P0-10, P0-12, and P0-08 constants for pressure maintenance. The instructions include step-by-step photos.

Q: What is the warranty and delivery time?
Standard warranty is 12 months from the date of purchase. Delivery to Lithuania usually takes 10-20 business days. Shipping from China with a tracking number, insurance included. You can find delivery terms and return policy on the TopSmart website.

The 3-phase frequency converter is a reliable, versatile, and economical electrical device that reduces energy consumption by up to 40% and sets new standards for automatic motor control. The 3-phase frequency converter will become an integral part of your production or heating system.

Sources: Variable-frequency drive technology | TopSmart store