On November 9, the 15th National Games of China, co-hosted by Guangdong, Hong Kong, and Macao, officially opened at the Guangzhou Olympic Sports Center Stadium. Behind the dazzling lights and passionate cheers of this grand national event lies the strong backbone of stable and reliable power supply.

The ZGNGR-type Neutral Grounding Resistor Complete Device, independently developed by Guangzhou Zhiguang Electric Technology Co., Ltd.—a wholly-owned subsidiary of Guangzhou Zhiguang Electric Co., Ltd. (Zhiguang Electric Technology)—safeguarded the power distribution system at the main venue. It ensured the smooth operation of the opening ceremony and reliable power supply throughout the competition, showcasing Zhiguang Electric Technology’s leading expertise and proven strength in handling grounding faults in distribution networks.

Technology Leadership: Injecting “Stability” into Large-Scale Event Power Systems

Large stadium power systems are complex and highly concentrated in load, with extremely high demands for grid safety and reliability. Once a single-phase grounding fault occurs, any delay in response may easily cause a power outage.

The ZGNGR-type Neutral Grounding Resistor Complete Device from ZG Electric Technology was specifically designed to address these critical safety challenges in high-end large-scale applications. For the 15th National Games, it provided a solid and reliable “invisible barrier” for the event’s power assurance system.

Low Temperature Rise · Stable and Reliable, With an innovative grid-structured design and optimized resistor plate cutting technology, the device significantly enhances heat dissipation efficiency. Testing shows that the temperature rise remains below 600K within 10 seconds under rated voltage—far exceeding national standards. This ensures outstanding stability even during peak event loads, eliminating risks of overheating.

High Durability · Resilient in Harsh Environments, The core resistor elements possess exceptional high-temperature oxidation resistance (performing reliably at 1100°C) with a melting point up to 1450°C. Whether exposed to humid, salty air in southern regions or pollutants in harsh industrial environments, the device maintains excellent performance and long service life without degradation.

High Strength · Flexible Installation, Constructed with premium stainless steel, the device boasts excellent mechanical strength, vibration resistance, and deformation resistance. Its modular design allows for compact size, flexible installation, and easy maintenance—ideal for space-constrained distribution rooms or retrofit projects, greatly improving deployment efficiency.

Fully Customizable · Perfectly Matched, Covering a full voltage range from 6kV to 35kV, the product can be precisely customized to match the user’s distribution system requirements, ensuring optimal alignment between protection schemes and system characteristics—meeting diverse application needs.

Its successful deployment at the 15th National Games proved the device’s capability to quickly and accurately isolate grounding faults and effectively suppress system overvoltage—making it the “key guardian” of safe and reliable power distribution.

Proven Strength: Continuously Empowering Energy Security

power electronics technology, Zhiguang Electric Technology is committed to safeguarding grid safety through technological innovation. ZGNGR Neutral Grounding Resistor Complete Device’s application at the 15th National Games once again demonstrates market and industry recognition of Zhiguang Electric Technology’s product reliability and technological excellence.

Zhiguang Electric Technology sincerely wishes all athletes outstanding performances and the 15th National Games a complete success! Looking ahead, Zhiguang Electric Technology will continue to contribute to a safer and smarter energy future with advanced technologies, reliable products, and comprehensive services—embodying the strength of Zhiguang innovation.