Steps for Resistance Measurement with Digital Dual-Clamp Phase Voltmeter

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SMN series contact pressure detector is a special instrument developed by our company for detecting the clamping force of moving contacts in low-voltage switchgear drawers.

Currently, 380VAC power supply systems commonly use drawer-type switchgear. Due to deformation of moving contacts during drawer insertion and extraction, damage to clamping springs, reduced clamping force of moving contacts, poor contact or reduced contact area between static and moving contacts, the resistance at the contact points increases, causing heating, which may further develop into two-phase or three-phase short circuits, switchgear burning, property loss, power supply interruption, and equipment shutdown. The SMN series detector provides a convenient and accurate method for detecting contact clamping force, which can significantly reduce short-circuit faults in low-voltage drawer cabinets caused by factors such as contact deformation. This product is widely used in operating sites of petroleum, nuclear power, electric power, and other sectors. It is a reliable diagnostic tool for enterprises to inspect the clamping force of low-voltage switchgear contacts, conveniently and quickly monitoring the clamping force parameters, helping to analyze the causes of connector heating or burning, ensuring long-term stable and reliable switch performance, and avoiding accidents.

SMN series low-voltage switchgear contact clamping force detector consists of a digital display and a handle clamping force sensor. The standard product measurement range is 0-200N. It has automatic and manual measurement modes, as well as upper and lower limit alarm functions for clamping force. Corresponding to different manufacturers' low-voltage cabinets such as ABB, Siemens, Tianshui Changcheng, etc., various forms of handle sensors and guide heads can be configured.











Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.