Hubei Tianrui Electronics Co., Ltd. was founded in 1998, is a collection of scientific research, production, sales and service in one of the high-tech power electronics components. Focusing on the development of ”Relay Protection and Power Automation“， the company continues to provide complete sets of precision transformer solutions for domestic power equipment manufacturers, and is a well-known manufacturer of relay protection relays and a leader in the industry.Till So far ,Tianrui acquires 50 patents in total, Including 4 inventions, 40 utility model patents, 6 appearance patents. Tianrui has 8 branches and offices all over China. Such as Beijing, Shenzhen, Nanjing,Zhuhai,Chengdu, Xi’an etc.
Factory Show
Raw Materials Inspection
Raw Materials Inspection
The Tianrui Electronics R&D team is composed of core technicians with more than 10 years of experience in the research and development of power sensor products. These core technicians with more than 10 years of experience in research, design, manufacturing.
Winding
Winding
The Tianrui Electronics R&D team is composed of core technicians with more than 10 years of experience in the research and development of power sensor products. These core technicians with more than 10 years of experience in research, design, manufacturing.
Soldering
Soldering
The Tianrui Electronics R&D team is composed of core technicians with more than 10 years of experience in the research and development of power sensor products. These core technicians with more than 10 years of experience in research, design, manufacturing.
Assembly
Assembly
The Tianrui Electronics R&D team is composed of core technicians with more than 10 years of experience in the research and development of power sensor products. These core technicians with more than 10 years of experience in research, design, manufacturing.
Development Milestones
1996
In 1996, Tianrui Company was established in Tianmen City, Hubei Province
2000
In 2000, the leading product, the miniature precision current-voltage converter, passed the inspection of the National Relay Quality Supervision and Inspection Center.
2003
In 2003, it successfully awarded "AA Grade Credit Enterprise". Its leading product, micro precision current-voltage converter, won the first prize of the Municipal Science and Technology Progress Award.
2004
In 2004, he was elected as a member of the National Electrical Instrumentation Standardization Technical Committee and a member of the Relay Protection and Automation Equipment Branch of the China Electrical Equipment Industry Association.
2006
In 2006, product manufacturing implemented RoHS requirements and passed testing by certification agencies.
2007
In 2007, it was elected as a governing unit of the Relay Protection and Automation Equipment Branch of the China Electrical Equipment Industry Association, and successfully hosted an industry technical seminar in Wuhan.
2008
In 2008, it was rated as one of the “30 Independently Innovative Small and Medium-sized Enterprises in the Province” by the Hubei Provincial Department of Information Industry.
2009
In 2009, the "Tianrui" trademark was registered in the Trademark Office of the State Administration for Industry and Commerce, and obtained 1 invention patent and 9 utility model patents.
2010
In 2010, it was awarded the "National Enterprise and Institutional Intellectual Property Pilot Unit" by the State Intellectual Property Office and passed the national high-tech enterprise review.
2011
In 2011, he was elected as a member of the Smart Grid Equipment Working Committee of the China Electrical Equipment Industry Association.
2012
In 2012, the establishment of a self-calibration system and calibration device for 5A/1mA ~ 5A/500mA micro current transformers with a ratio error of no more than 0.01% passed the appraisal of an expert group headed by Zhang Zhonghua.
2013
In 2013, Tianrui series current and voltage transformers were awarded Hubei Province Famous Brand.
2014
In 2014, it was approved as a recognized enterprise technology center by Hubei Province.
2015
In 2015, the independent research and development result "(100/√3~480)V/(0.1~2)V power frequency micro voltage transformer self-calibration system" passed the appraisal of an expert group headed by Cheng Shijie.
2016
In 2016, one invention patent was obtained; It has become an electronic sensor R&D center, and the company's products have expanded from low voltage to medium and high voltage.
2017
In 2017, the developed residual current transformer obtained the experimental certificate from the National Electronic Consumer Quality Supervision and Inspection Center.
