9±1 Mm Contact Opening Distance High Voltage Circuit Breaker

In 2005, our group ranked the No. 225 in competitiveness of China's top 500;

According to national development,we expand five major industrial, such as the high voltage apparatus, renewable energy equipment, intelligent grid and rail transit equipment,and magnetic gear in order to achieve the business strategic abjectives.

Over these years, our company stand for independent innovation and to build low-carbon economic development model.Annual R & D expenses accounted for more than 5% of corporate sales.We have mastered the core technology of transformation and distribution equipment and core self-supporting ability long since.Our self- developed prefabricated substation, ring main unit, load switch, wind power switchgear, inelligent grid systems and many other products achieved the international advanced level,By the way, we are the one of the companies who draft the national standards about that.

Tianan has the certification and honour involves China famous brand,China top brand,National inspection- free products and ISO9001 quality system, IS014001 environmental management system, OHSAS 18001 occupational health and safety management system. the inspection measurement and certification system  and "CCC","PCCC"，etc.Also we equipped with business efficient and flexible management mechanism, large number of outstanding professionals, first-class production and testing equipment, high-level research and development strategy, Quality is the character" concept, perfect quality management system and quality assurance,sales and marketing network all over the country,which forms to provide customers with excellent support system of resources.

The products are widely used in nuclear power plant, chemical plant, railway, underground, Airport, national defense, Beijing Olympics and main national, provincial and municipal construction projects. Whether in the Shenzhou spacecraft launching base,the Sanxia power plant, Qinghai-Tibet railway, Qingshan nuclear power station, or domestic subway, Olympic venues. International airport. wind farms and so on.Our  projects applied in more than 30 countries and regions all over the world. Our main products includes

   - 126kV&252kV power transformer,resin-Cast Dry-type & Oil-immersed Power transformer，Combined transformer

   - 252kV and below 252kV outdoor HV disconnecting switch and transformer,

   - Boxtype substation below 40.5kV,Prefabricated substation and cable (RMU)branch box

   - 126kV GIS combination apparatus,

   - SF6 circuit breaker,Vacuum circuit breaker ,H. V. &L. V. Circuit breaker, 

   - High-voltage inverter speed regulation device, high-voltage static reactive power Generator, active power filter, intelligent electric equipments, etc.

Seeing is believing, Tianan Group sincerely welcome all new and old customers and friends come to our company for a visit or inspection.