The “Earth Test Technology and Standard System Construction” seminar of the Energy Industry Power Grounding Technology Standards Committee was held in Wuhan on February 4, 2018. The meeting was organized by Wuhan Kangda Electric Co., Ltd., the revised unit of DL/T 475-2017 "Guidelines for the Measurement of Characteristic Parameters of Grounding Devices" and a member of the Grounding Standards Committee. The Deputy Directors of the Standards Committee Dong Xiaohui and Li Qian, and the Secretary-General Wang Sen , Deputy Secretary-General Li Zhizhong and 9 experts from other committee members attended the meeting.

　　Experts at the meeting had a lively discussion and exchanges on new grounding test items and new technologies such as the power frequency "inverted phase incremental method" around the DL/T 475-2017 "Guidelines for the Measurement of Grounding Device Characteristic Parameters" officially promulgated in December 2017 , And conducted constructive discussions on the construction of grounding instrumentation and evaluation standard system.

　　After the seminar, the participating experts, accompanied by Dr. Hu Xiaohui, general manager of Kangda Electric, visited the company's R&D department and laboratory. The experts at the meeting highly recognized Kangda Electric's technical research and development strength and the achievements made in recent years. For the large-scale grounding characteristic parameter measurement system based on the power frequency "inverted phase incremental method" (incorporated into DL/T 475-2017 "Grounding device characteristic parameter measurement guidelines") and "strong anti-interference insulation test complete equipment" (solve Highly appraise the impact of strong induction in UHV and UHV substations on insulation and nuclear phase testing.

　　Founded in 1989, Wuhan Kangda Electric Co., Ltd. is a high-tech enterprise focusing on the research and development and production of insulation and grounding measuring instruments. The company has drafted a number of power industry standards and national verification regulations, including:

　　DL/T845.1-2004 electronic insulation resistance meter (under revision)

　　DL/T845.2-2004 Power frequency grounding resistance tester (under revision)

　　DL/T475-2017 Grounding device characteristic parameter measurement guideline

　　DL/T1473-2016 Inspection Regulations for Electric Measuring and Indicating Instruments

　　JJG1005-2005 National Metrological Verification Regulations for Insulation Resistance Meters (under revision)

　　JJG large-scale ground grid ground impedance tester verification regulations (newly formulated)

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　　Wuhan Kangda Electric Co., Ltd.

　　Address: No. 30, Shucheng Road, Xiongchu Street, Hongshan District, Wuhan

　　Website: www.whkddq.net

　　Tel: (027) 8738 1005, 8739 9915, 8738 6393