4KW Single Phase to 3 Phase VFD

As a professional manufacturer in China, CSIVEI factory's 4KW Single Phase to 3 Phase VFD is a high-power solution for large-scale industrial equipment. Engineered for heavy machinery, centrifugal chillers, mining conveyors, and large water treatment pumps, this drive delivers robust performance with advanced motor control algorithms. Key features include high overload capacity, built-in DC reactor for harmonic mitigation, multiple communication interfaces, and configurable I/O expansion. The heavy-duty enclosure with reinforced cooling system ensures reliable operation in high-temperature industrial environments. Combining energy-saving capabilities with intelligent protection features, the CSIVEI 4KW Single Phase to 3 Phase VFD maximizes system uptime and operational efficiency for large-power applications.

Core Parameters and Specifications

Typical Applications

The CSIVEI 4KW Single Phase to 3 Phase VFDs robust performance for heavy industrial equipment requiring continuous operation:

●  Large pumps – main water supply pumps, industrial cooling pumps

●  Industrial fans – mine ventilation, cement plant fans, dust collectors

●  Compressors – large air compressors, nitrogen compressors

●  Mixers – concrete mixers, chemical reactors, pulp mixers

●  Centrifuges – sugar centrifuges, oil centrifuges, decanters

With reinforced cooling and harmonic mitigation features, it ensures reliable operation in harsh environments.

Energy Efficiency & Cost Savings

The CSIVEI VFD series helps industrial facilities reduce energy consumption and operational costs through intelligent motor control and energy optimization features.

Automatic Energy Optimization (AEO) – The drive continuously monitors motor load and automatically adjusts voltage and current to match actual demand. This feature can reduce energy consumption by 20-50% in variable torque applications such as fans and pumps.

Sleep Mode – When system demand falls below a preset threshold, the drive automatically stops the motor to eliminate idle power consumption. Once demand returns, the drive restarts seamlessly.

PID Controller – Built-in PID control enables precise regulation of pressure, flow, or temperature without external controllers, ensuring the system operates at optimal efficiency points.

Energy Monitoring – Real-time display of motor current, voltage, power, and energy consumption allows operators to track energy usage and identify optimization opportunities.

FAQs

Can I use a single‑phase input VFD with a three‑phase motor?

Yes. Our 4KW Single Phase to 3 Phase VFDs take single‑phase input and output three‑phase power to the motor. It's a common setup when only single‑phase power is available but you want the efficiency and reliability of a three‑phase motor. Just make sure the motor's voltage matches the drive's output—230V three‑phase.

Do I need an external braking resistor?

It depends. If you need rapid deceleration or the load has high inertia—like centrifuges, cranes, hoists, or winders—then yes, you'll need one. On drives that have an internal braking unit, the resistor handles the regenerative energy to avoid over‑voltage faults and shorten stopping times. For fans and pumps with slower deceleration, you can usually skip it.

What protections are built into the drive?

CSIVEI drives include a solid set of protections: over‑voltage, under‑voltage, over‑current, short circuit, over‑temperature (heatsink), phase loss on input or output, and motor overload (electronic thermal overload, I²t). These help keep things running reliably and extend equipment life.

How does the VFD save energy?

For variable torque loads like fans and pumps, power follows the affinity laws—it's proportional to the cube of speed. Dropping speed by 20% cuts energy use by roughly 50%. The Automatic Energy Optimization (AEO) feature reduces voltage to match actual load for extra savings. Sleep Mode also shuts the motor off during low‑demand periods, eliminating idle power draw.

Does the VFD come with a warranty and technical support?

Yes. CSIVEI drives come with a standard 18‑month warranty from the date of manufacture (or 12 months from installation, whichever is later). Extended warranty options are available for critical applications. Global tech support is available via email, phone, and online resources—user manuals, application guides, and configuration software are all included.