Low pressure switch is used infrequently load off load circuit; overload and short circuit protection can be used lines. Overload and short circuit protection done by fuses. When the current exceeds a corresponding multiple of the rated current fuse fuse complete with the corresponding time overload; theoretically instantaneous fuse short-circuit current. Load switch use and maintenance: 1 After unpacking the packing list and randomly check the product technical documentation are complete, check the product for damage during transportation, storage process. 2 Remove dust on the product, and insulators and grounding parts wipe clean. 3 conductive parts and mechanical friction parts Xi'an load switch, coated with neutral Vaseline. 4 After installation is complete check the wiring is correct, good grounding is reliable. 5 in operation and maintenance should be checked regularly, once a year; after breaking 20 times the rated load load switch wholesale, should conduct a comprehensive overhaul. 6 Inspection should not charged in the case, and should check the insulator, the contact exposure and so on. 7 operating personnel must be familiar with all parts of the performance, configuration and installation of the load switch. High voltage load switch load switch _ _ Hefei Xi'an by the Xi'an high Huayi power plant. Xian Huayi Electric Power Equipment Factory (www.xahy.com) strong, credible, in the Xi'an high-voltage circuit breakers and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Huayi electricity into the brilliant and you work for a better future!