This page summarizes Zhuhai Huawang Technology’s corporate qualifications, standards participation and intellectual property. Certificate copies can be presented to qualified customers on request.
Corporate Qualifications
- National High-Tech Enterprise of China, certificate no. GR202544002365.
- ISO 9001 quality management system certified.
- ISO 14001 and ISO 45001 valid through November 2026 (renewal in progress).
- Guangdong Famous High-tech Product title for core sensor products.
Standards Participation
- Q/GDW 12082-2021 — State Grid enterprise standard, General technical specification for wireless sensors in the IoT for power transmission and transformation equipment. Huawang participated in drafting.
- DL/T power industry standard for high-voltage ceramic capacitance sensors up to 35 kV (draft proposed by the China Electricity Council). Huawang participated in drafting.
- State Grid Corporation of China standard for digital leakage-current meters of metal-oxide surge arresters. Huawang participated in drafting.
- T/EPTC 002-2022 — technical specification for 10 kV intelligent distribution transformers. Huawang participated in drafting.
Awards
- Science and Technology Progress Award (2nd class) of China Southern Power Grid — ceramic-capacitor-coupling live-display and PD online identification system, jointly developed with the Yunnan Electric Power Research Institute.
- Hebei Province Science and Technology Invention Award (2nd class, 2021) — RSO generator rotor inter-turn short circuit detector.
- State Grid Youth Innovation and Creativity Gold Award.
Intellectual Property
Huawang holds 52 patents and 63 software copyrights, covering PD pulse recognition, HFCT noise separation and GIS PD localization algorithms, among others.
Positioning on IEC 60270
Huawang’s quantitative PD measurement chain is based on the pulse current method defined in IEC 60270, which yields traceable apparent-charge values in picocoulombs (pC). The high-frequency current transformer (HFCT) method shares its physical principle but uses a different measuring circuit and frequency band, so HFCT readings are converted or comparative values and are not claimed to be IEC 60270 compliant. This distinction is stated in tenders and technical documents so that buyers can compare quotations on a like-for-like basis.
See also: Grid track record and tender wins · White papers and technical resources