Core Products
Full series of 660V/1140V/6kV/10kV three-level inverters & integrated drive cores, two/four-quadrant optional, customizable for global heavy industry.
Industry Solutions
SUNSIN medium & high voltage inverters and integrated drive cores provide reliable variable frequency control solutions for mining, oil & gas, metallurgy and various heavy-duty industrial sectors.
Classic Engineering Cases
Our tailored medium & high voltage drive solutions deliver stable, energy-efficient performance for countless heavy industrial sites worldwide.
Drive cabinet modernization improved process control and reduced equipment downtime risk.
An integrated drive solution improved reliability in a dusty and high-load industrial site.
A rugged high-voltage drive system supported outdoor mining equipment operation.
An 1140V inverter system provided robust control for mining motor loads.
A 660/690V drive system supported auxiliary industrial motors with stable speed control.
A PV inverter cabinet supported efficient DC/AC conversion for an industrial energy project.
Variable speed control allowed ventilation output to follow real operating demand.
A regenerative drive solution improved hoist control during lifting and lowering cycles.
Sunsin | Medium & High Voltage Three Level NPC Inverter Manufacturer
Shenzhen SUNSIN Technology specializes in R&D, production and service of industrial drive, control and new energy power equipment.
We own mature R&D teams and proprietary leading technologies, offering inverters, motor drives, EV chargers and energy storage converters for mining, metallurgy, machinery and new energy industries. Customized solutions are available to lower costs and boost efficiency for clients.
Adhering to technology-driven and quality-oriented development, we have a nationwide service network with products sold globally. Reliable quality and professional support make us a trusted partner for industrial and new energy manufacturers.
Our Partners
Long-term cooperation with industrial manufacturers worldwide, trusted by a wide range of industry partners.
Industrial variable frequency drives (VFDs) come in two dominant physical forms: wall‑mount VFD and floor‑standing cabinet‑type VFD. Many project engineers and procurement teams only focus on motor power, voltage or control modes, while overlooking enclosure form factor at the early selection stage. A wrong decision on VFD mechanical structure will trigger avoidable headaches: insufficient installation
Large‑scale industrial operations across mining, water treatment, oil and gas, power generation and heavy manufacturing rely on variable‑speed motor systems to run fans, pumps, conveyors, compressors and hoist equipment. When motor power climbs beyond low‑voltage drive capacity, project engineering teams face a fundamental decision: implement medium‑voltage (MV) drives or invest in high‑voltage (HV) drive systems.
When engineers select industrial inverter cabinets, VFD drive systems, or PMSM motor drives for mining, water pumping, industrial fan, and solar pump projects, most focus heavily on power capacity, control precision, and communication compatibility. However, one critical specification is often overlooked: the cabinet IP protection grade. Choosing the wrong IP rating is one of the
RS485 communication issues are among the most common and disruptive faults in daily VFD operation. In automated production lines, HVAC systems, water pump group control setups, and PLC-VFD linkage architectures, unstable or broken RS485 communication creates real operational headaches. Engineers often face unresponsive VFD speed commands, inaccurate real-time data feedback, random drive offline alarms, and
Every plant maintenance technician, automation engineer and machine‑builder runs into this common decision when setting‑up a new variable‑frequency drive (VFD). Should you activate V/F Control or vector‑control for your induction‑motor driven load? Many users stick to factory‑default V/F mode without understanding its performance limits, only to run into low‑speed torque shortages, unstable rotation, speed drop‑out
Industrial-grade marine and mining VFDs require dedicated professional certifications to operate safely and compliantly in extreme industrial environments. Unlike standard variable frequency drives used in ordinary factory settings, marine and mining VFDs work under tough and high-risk conditions. These include flammable gas, combustible coal dust, persistent humidity, severe salt fog corrosion, continuous mechanical vibration and
Chinese MV VFD solutions are gaining growing traction as mining operators hunt for cost-effective, robust drive equipment. Mining operations across Africa, Central Asia, Southeast Asia and the Middle East are accelerating equipment renewal and energy efficiency upgrades. For core equipment including mine belt conveyors, hoists and crushing systems, medium voltage variable frequency drives (MV VFDs)
Plant managers, automation engineers and global buyers all struggle to source a dependable variable frequency drive manufacturer amid countless suppliers. Poor-grade frequency converters cause costly downtime, energy waste and line failures, while untrustworthy vendors lack prompt technical support and global certifications. Most buyers only compare prices and overlook key standards: in-house R&D, standardized production, global
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