Import 200pmicro Ohmmeter — Buy in wholesale FOB from Supplier in China

The 200A Micro Ohmmeter from Wuhan GDMK Electric Co., Ltd. is a high-precision contact resistance tester designed for power system maintenance. It addresses the limitations of conventional QJ44 double-arm DC bridges, which use only milliamp-level test currents and often fail to detect defects in conductor cross-sectional area. This instrument provides a DC test current of 100A and 200A, meeting the latest Chinese Ministry of Power standard DL/T845.4-2004 and verification procedure JJG1052-2009, which mandate a minimum current of 100A for at least 60 seconds to ensure accurate measurement of switch contact resistance.

The device employs high-frequency switching power supplies and digital circuit technology to measure loop resistance in switch control equipment. It features an ergonomic operator panel, a large-screen LCD for result display, and offers selectable current gears of 50A, 150A, 100A, and 200A. The instrument provides a resolution of 0.01 micro-ohms and allows custom test time settings up to 599 seconds, exceeding the standard 60-second requirement. It is designed to overcome the measurement inaccuracies caused by oil films and oxide layers between high-voltage switch contacts.

This micro ohmmeter is used by electric power and power supply departments for on-site maintenance of high-voltage switches and for factory loop resistance testing. Buyers are typically utility companies, electrical contractors, and switchgear manufacturers requiring reliable contact resistance data. When sourcing, confirm the exact current output configuration, included accessories like test leads, and the supplier's calibration procedures. Verify the specific warranty terms and technical support availability directly with Wuhan GDMK Electric Co., Ltd.

Wuhan GDMK Electric Co., Ltd. is located in the Jiangxia District Economic Development Zone, Wuhan, China. The supplier is listed with a 'harbor' trust tier on the platform. The listing does not provide details on the company's operational history, number of employees, or annual revenue.

The supplier's product page focuses on the technical specifications and compliance standards of its 200A Micro Ohmmeter. It positions the instrument as a solution for power system testing that meets national standards. The listing does not mention specific client portfolios, export markets, or production capacity. Buyers should contact the supplier directly to verify manufacturing capabilities and request recent test reports or calibration certificates.