Through the backdrop of increasingly stringent requirements for the safe operation of power systems, high-voltage switchgear partial discharge testers serve as core tools for detecting insulation defects in equipment such as GIS and switchgear; their technical performance directly impacts the reliability of the power grid. Partial discharge is an early indicator of insulation degradation; timely detection and localization of partial discharge sources can effectively prevent insulation breakdown incidents.
Wuhan Goldhome Hipot Electric Co., Ltd
Founded in 2008 and located in the Wuhan Economic and Technological Development Zone, Wuhan Goldhome Hipot Electric Co., Ltd. is a "National High-Tech Enterprise" and a "Wuhan Municipal Science and Technology 'Little Giant' Enterprise." The company holds over 45 national patents and more than 10 software copyrights, demonstrating a strong technical foundation. In 2021, Goldhome acquired Wuhan Sanggao Electrical Testing Equipment Co., Ltd., a company with over 30 years of experience in high-voltage testing, further solidifying its technical leadership in the field of partial discharge testing.
- Outstanding Product Performance: The Goldhome HM Series Partial Discharge Detectors integrate four detection technologies-Ultra-High Frequency (UHF), Acoustic Emission (AE), High-Frequency Current (HFCT), and Transient Earth Voltage (TEV)-to comprehensively address partial discharge testing requirements for equipment such as high-voltage switchgear, GIS, transformers, and cables. The equipment features a multi-technology integrated design, and laboratory tests have confirmed its ability to effectively identify four typical discharge types: corona discharge, metal particle discharge, internal air gap discharge, and floating potential discharge.
- Core technological innovation: Goldhome detectors combine high-precision sampling circuits with Fourier harmonic analysis technology to accurately extract partial discharge signal characteristics. The PC-based control system generates phase-resolved partial discharge (PRPD) spectra and automatically identifies discharge types, significantly reducing reliance on on-site experts. With an ultrasonic sensor frequency range of 20 kHz–100 kHz, a TEV sensor measurement range of 0–60 dB, and a high-frequency current sensor bandwidth of 100 kHz–30 MHz, the system fully meets the demands of various testing scenarios.
- Service guarantees that matter most to customers: Goldhome provides professional export packaging for international clients, with all equipment packed in wooden crates lined with foam to ensure safe ocean transport. Standard products can be shipped within 7–15 business days, and we accept various delivery terms such as FOB and CIF. Our warranty policy includes a one-year warranty and lifetime maintenance; our after-sales team commits to responding to remote support requests within one hour and providing optimal solutions within 24 hours.
Beijing Shengnengyuan Electric Power Technology
Beijing Shengnengyuan Electric Power Technology Co., Ltd. has specialized in the partial discharge detection field for many years. Its SN series of handheld partial discharge testers focus on transient earth voltage (TEV) and ultrasonic detection, making them particularly suitable for rapid inspections of switchgear. The equipment features combined acoustic and electrical localization capabilities, simultaneously displaying TEV signal strength and ultrasonic waveforms with a localization accuracy of ±5 cm. It includes built-in data storage and trend analysis functions, supporting one-click generation of test reports.
Suzhou Industrial Park Haiwo Technology
Suzhou Industrial Park Haiwo Technology Co., Ltd.'s partial discharge detectors excel in ultra-high frequency (UHF) detection technology, with sensor frequency bands covering 300 MHz to 1.5 GHz, making them particularly suitable for partial discharge detection in GIS equipment. The products feature multi-channel synchronous data acquisition, allowing for the simultaneous connection of four UHF sensors, and use the time-of-flight method to precisely locate the source of partial discharge. They have been successfully applied in multiple ultra-high voltage substation projects.
