As a critical downhole conveying equipment, the ESP variable frequency drive system faces three major challenges: long-cable transmission, choke signal interference, and harsh on-site operating environments. Nancal Electric's medium voltage drives, based on cell series multi-level topology, with long-cable adaptive control as the core and choke system compatibility as a distinctive feature, effectively address industry pain points through deep integration of hardware optimization and software algorithms.
Nancal Electric has officially launched its comprehensive, one-stop retrofit and upgrade service for medium voltage drives. Power cells and control systems can be easily renewed, delivering a major reliability upgrade, with both on-site and factory remanufacturing options. Our solutions help extend equipment service life and improve operational efficiency.
Nancal Electric supplies medium voltage drives for the newly commissioned Unit 3 at PipeChina's Guangzhou Compressor Station, continuing its long‑term role as a core localization partner for China's unified national pipeline network.
Nancal Electric completes full localization of eight imported RCP drives at Haiyang Nuclear Phase I, eliminating unplanned shutdowns and enhancing operational reliability with a "4-operation, 1-standby" drive system configuration.
In metallurgical steel production, sintering main exhaust fans consume significant energy, and traditional starting methods suffer from high inrush current and severe energy waste. Nancal Electric retrofitted a steel plant's sintering main exhaust system with medium voltage VFDs, achieving soft start and variable frequency speed regulation in a "two-drive-two" configuration with manual mutual backup. Committed to energy savings and customer cost reduction, we are always taking action.
Recently, the first in-service gas-to-electric compressor unit of PipeChina successfully completed its 72-hour trial operation and was officially commissioned at the Quzhou Station of Zhejiang Natural Gas Pipeline Company. All equipment of the project was fully localized, with two 23,500 kVA water-cooling medium voltage drives supplied by Shanghai Nancal Electric Co., Ltd. Nancal Electric contributed to the project's energy savings and emission reductions, supporting improvements in pipeline transmission capacity and green supply assurance.
Nancal Electric successfully co-organized the 10th National Petrochemical Electrical Technology Conference 2026, where it delivered a technical presentation highlighting the core value of its high-reliability medium voltage drive solutions for energy saving, carbon reduction, and safe operation in the petrochemical industry. To date, the company has delivered over 200 water-cooling medium voltage drives. It also showcased its full-range series of air-cooling medium voltage drives covering all power ranges, emphasizing their high reliability, high energy efficiency, and flexible adaptability to support the green and low-carbon transition of the petrochemical sector.
The hydrostatic test for the reactor coolant system of Unit 3 at the Haiyang Nuclear Power Plant was successfully completed. This test represents the first key milestone in the commissioning phase for Unit 3. The cold test verified that the four reactor coolant pumps (RCPs) for Unit 3, along with their supporting localized RCP Drives supplied by Nancal Electric, operated normally, marking a successful first attempt.
Power grid fluctuations, harsh environmental conditions, dynamic load challenges… Faced with such complex on-site operating conditions, how does Nancal Electric's medium voltage AC drive, with its highly reliable system design, steadily withstand the "real test"?
This medium voltage drive has been in stable operation on-site for over three years and has withstood multiple grid voltage sags of varying severity.The power cell fast automatic bypass design and the Low Voltage Ride Through (LVRT) capability of Nancal Electric's medium voltage drives address internal cell failures and external grid voltage sags, respectively, effectively preventing unplanned shutdowns caused by such issues.
2025 was a year of deep technical cultivation and steady advancement for Nancal Electric. Guided by the spirit of engineers, we drove continuous innovation in power electronics and electrical drives, delivering reliable products and solutions to help build a clean, low-carbon, safe, and efficient energy ecosystem.
Unplanned shutdown is the costliest "silence" on a production line. Faced with the high price of unexpected stops, how can a medium voltage drive leverage its high reliability to reduce the risk of unplanned shutdown? Read on to discover Nancal Electric's solution.