Probe on temperature rise test of mine-used switch devices

Combining with related standards and actual work experience, the paper introduced temperature rise test method of circuit for mine-used switch electrical products, connecting wire method of temperature rise test, temperature rise test methods for different working systems, expounded measuring method of surface temperature of electrical components and temperature rise of coil. It summarized notices before temperature rise test and during the experiment process. The paper has certain guiding significance for temperature rise test of mine-used switch devices in practical work.