Instrument output current is stable, test accuracy is high



2026 mainstream brands and market landscape The domestic market is mainly clustered in Wuhan and Shenzhen/Guangzhou (communication industry clusters). Since lightning protection testing involves public safety, instruments must comply with metrological verification regulations. Domestic leading brands (recommended first choice) Wuhan UHV Electric Power Technology Co., Ltd.: Position: Mainstream supplier of lightning protection testing in the power industry, products comply with power industry standards (DL/T). Features: Instrument output current is stable, test accuracy is high (±1%), especially suitable for maintenance of lightning protection facilities in substations and transmission lines. Equipped with large-capacity data storage and Bluetooth printing functions. Applicable to: Power systems, railway systems, large industrial and mining enterprises. Guangzhou Hongce / Shenzhen Leidi: Position: Deeply engaged in the communication industry (base stations for mobile, telecom, and Unicom), complying with communication industry standards (YD/T). Features: Excellent portability, specifically designed for field base stations, long battery life, extremely simple operation (one-key test). Applicable to: Communication operators, tower companies, third-party lightning protection testing institutions. Shanghai Laiyang / Yangzhou Tuopu: Features: High cost-performance, providing a full range of products from basic to intelligent types, suitable for general building lightning protection testing. Beijing Putian / Zhongguang Lightning Protection (supporting instruments): Some major lightning arrester manufacturers also provide supporting dedicated testing instruments with the best compatibility. Internationally renowned brands Germany DEHN, France CITEL, USA ERICO (nVent): Features: Usually used as supporting testing tools for their own SPD products, with extremely high accuracy, but slightly less versatility (may be optimized only for specific models), and expensive. Applicable to: Foreign-related projects or special industrial scenarios using imported high-end SPD systems. 3. Key indicators for selection When purchasing, please pay attention to the following parameters: Test voltage range: It should cover the varistor voltage range of common SPDs, usually 0-2000V or 0-3000V. For high-voltage DC power supply systems (such as photovoltaic DC side), confirm whether the maximum test voltage is sufficient (may require above 3000V). Test current accuracy: