Maintenance and care of relay protection testers require a combination of daily protection and regular inspections to ensure testing accuracy and lifespan. During daily use, after each operation, wipe the instrument surface with a dry, soft cloth to remove dust and stains, paying particular attention to cleaning panel buttons, wiring terminals, and ventilation openings. Avoid contact with damp cloths or corrosive cleaning agents to prevent oxidation of interfaces and damage to the panel. Regularly check the instrument's exterior for any bumps or deformation, ensure wiring terminals are secure and free of rust, and check the internal cooling fan for proper operation. If the ventilation openings are heavily dusty, gently blow them clean with compressed air to ensure proper heat dissipation. Furthermore, according to the period specified in the instrument's instruction manual, contact a professional organization for functional verification and accuracy calibration to avoid test data deviations due to prolonged use. When storing, place the instrument in a dry, well-ventilated environment away from direct sunlight, controlling the ambient temperature and humidity within the specified range. Keep it away from strong magnetic fields, vibration sources, and corrosive gases. During periods of inactivity, periodically power on the instrument for a period of time to prevent internal components from becoming damp and aging. In daily operation, it is also necessary to pay attention to the proper use of power supply to avoid voltage instability or sudden power outages from impacting the instrument's circuitry.
