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Wenzhou Changtai Electric Co., Ltd. was established in 1995. It is an enterprise restructured from a tertiary-industry subsidiary of State Grid Wenzhou Power Supply Company, a member enterprise of the Standardization Technical Committee for High-Voltage Switchgear and DC Power Supply in the electric power industry, and one of the earliest manufacturers in China engaged in the production of medium- and low-voltage power transmission and distribution complete equipment and components. Through 30 years of unremitting efforts by the Changtai team, the company has now become a Class A supplier of equipment rated at 35 kV and below for the State Grid main network. It has received numerous honors, including National High-tech Enterprise, National Sci-tech Small and Medium-sized Enterprise, "Specialized, Refined, Distinctive, and Innovative" Small and Medium-sized Enterprise, Innovative Small and Medium-sized Enterprise, and Zhejiang Provincial High-tech Enterprise R&D Center. The company's products cover more than 20 provinces, autonomous regions, and municipalities across the country, and its high- and low-voltage complete equipment has been safely connected to the grid for 30 years.
Exhibit Details
12KV DRY AIR GIS

12KV DRY AIR GIS

Environmentally friendly gas-insulated indoor AC metal-enclosed switchgear (C‑GIS) complies with China's environmental protection policies and supports the development of a global eco‑industrial chain aligned with carbon‑peak and carbon‑neutral goals. It is deployed in demanding environments such as high altitudes, high humidity, and dusty conditions, serving sectors including State Grid, Southern Power Grid, subways, petrochemicals, mining, wind power, photovoltaic generation, and railways. The products meet national standards, IEC standards, and industry-specific specifications. Their modular architecture readily accommodates intelligent control requirements, "four‑remote" functions, and integrated primary‑secondary equipment.

CTXGNH-12 Environmental-friendly Medium-Voltage Ring Main Unit

CTXGNH-12 Environmental-friendly Medium-Voltage Ring Main Unit

New Products / New Technology

The CTXGNH-12(V)/630-20 environmentally friendly air-insulated, metal-clad AC switchgear is a green, dry-air‑insulated switchgear developed to provide high‑quality products for China's distribution networks and to serve the extensive urban and rural grid customers across the country. It boasts outstanding performance characteristics, including a well‑thought‑out design, reliable power supply, compact structure, convenient installation, flexible operation, small footprint, and excellent cost‑effectiveness.

Intelligent Control Single-Phase Circuit Breaker

Intelligent Control Single-Phase Circuit Breaker

New Products / New Technology

Application Scenarios  Smart microgrid distribution equipment, used in medium- and low-voltage distribution systems within infrastructure such as photovoltaic power generation facilities, data centers, industrial and mining enterprises, and commercial centers. It is applied to inverter output connections, internal grid interconnections, power distribution, and motor control systems. In large-scale data centers, it can serve as an intermediate voltage level, reducing current on the low-voltage side and minimizing line losses.  Applicable Standards: IEC 61439, GB/T 14048.2-2020, GB/T 14048.3-2020

思源黑体预加载(勿删): WENZHOU CHANGTAI ELECTRIC CO., LTD.

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