15 kW Frequency Inverter, 1-Phase 220V to 3-Phase 380V

Multiple-functional Buttons

The multiple-functional keypad features a centralized layout where start/stop, frequency adjustment, and parameter settings are accessible via single-button operations; it also supports shortcut combinations, putting frequently used commands right at your fingertips. No external tools are required for commissioning—all settings can be configured directly on the panel—thereby reducing wiring and setup time and simplifying on-site operation.

Clear Led Display

The screen offers uniform brightness and high contrast, with operational data, settings, and alarm information displayed in distinct zones for intuitive reading. It provides real-time updates on frequency and current status, instantly displaying error codes; the display remains easily readable in both low-light and bright environments, facilitating inspections and troubleshooting.

Durable Housing

The unit features a reinforced design that is vibration-resistant and dust-proof, ensuring suitability for long-term, continuous operation in industrial settings. It boasts secure mounting points, an optimized cooling airflow path, and a compact internal component layout; these features minimize dust accumulation and the risk of loose connections, thereby reducing the frequency of routine maintenance.

Features

1. Wide Voltage Compatibility: Accepts single-phase 220–240V AC input and offers selectable three-phase output voltages (380V/400V/415V/440V/460V). A single unit can match three-phase motors of different voltage ratings, eliminating the need for on-site transformers; it is ready to use upon wiring and offers high adaptability.
2. RS485 Communication & Networking: Comes standard with an RS485 communication interface supporting remote start/stop, frequency setting, and operating status monitoring. It integrates easily with PLCs, touchscreens, or host computer systems, enabling coordinated control of multiple units for centralized management and automation integration.
3. IP20 Protection Design: With an IP20 protection rating, it effectively prevents the entry of fingers and larger foreign objects. It is suitable for installation in electrical control cabinets, distribution boxes, or dry indoor environments. Its compact structure and efficient heat dissipation ensure stable, reliable long-term operation.
4. Single-Phase to Three-Phase Drive: Directly accepts single-phase 220V input and outputs three-phase 380V to drive three-phase motors. This solves the power supply challenge of operating three-phase equipment where only single-phase power is available, eliminating the need for complex wiring modifications and ensuring flexible, convenient installation.

Use Cases

• Water Supply & HVAC: Constant-pressure water supply, pumps, fans, cooling towers, and HVAC circulation systems; PID closed-loop control ensures stable pressure and flow.
• Industrial Processing: Air compressors, conveyor belts, mixers, food processing machinery, woodworking routers, and stone cutters; vector control ensures high torque at low speeds.
• Agriculture & Outdoor: Agricultural irrigation, sprinkler systems, car washers, rolling shutters, and barrier gates; compatible with single-phase power supply and offers flexible installation.
• Lifting & Transport: Small lifting equipment, hoists, and conveyor lines; ensures smooth startup and reduces inrush current.
• Energy-Saving Retrofits: Variable-load equipment such as fans and pumps; automatic energy-saving operation for long-term electricity cost reduction.
• Closed-Loop Control Applications: Motor speed control systems requiring PID closed-loop operation via pressure, temperature, or flow sensors.

Application Scenarios

HVAC

Industrial Printing

Conveyor Belts

Air Compressors

Q1: What is the typical factory-default carrier frequency for the 15kW power range?

For general-purpose variable frequency drives (VFDs) in the 15kW–55kW ​​range (380V class), the factory-default carrier frequency is typically 4kHz, whereas it is usually 8kHz for the 1.5kW–11kW range. Since applications involving single-phase input with voltage boosting tend to generate more heat, increasing the carrier frequency is not recommended.

Q2: Which parameters must be entered manually before performing an auto-tuning (self-learning) procedure?

At a minimum, you must input the following: rated power, rated voltage (380V), rated current (as per the nameplate FLA), rated frequency (50Hz), and rated rotational speed.

Q3: For a 15kW load, should I choose V/F control or open-loop vector control (SVC)?

For variable-torque loads such as fans and water pumps, V/F control is sufficient; it involves simpler parameters and does not rely on the high accuracy of motor parameters. For applications requiring heavy-duty starting or high torque at low speeds (e.g., conveyor belts, extruders), SVC should be selected—provided that the motor parameters have been accurately determined via auto-tuning. Note that under vector control, a single VFD can drive only one motor, and the power ratings of the VFD and the motor should be reasonably well-matched.