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2023/11/21

Content and Precautions of Spring Finger Contact

Various maintenance guides (procedures) and standards specify the measurement of contact finger clamping force. (Wuhan Qiji Electronics) recommends using a spring scale as the measuring tool. In practice, measuring the contact finger clamping force at heights with a spring scale is not only inconvenient and inaccurate but also ineffective. For some structural isolating switches, the contact finger clamping force cannot be measured at all with a spring scale. Abstract: To address the overheating issue in the conductive circuit during the operation of high-voltage isolating switches, combined with the heating defect of the G4 type isolating switch discovered through infrared temperature measurement, this study considers the operating environment, switch structure, and operation and maintenance aspects.

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