Product Introduction
Metal oxide surge arresters are used on the roof of DC traction electric locomotives in urban rail transit systems to protect the insulation of locomotive electrical equipment from overvoltage damage. The product is designed and produced based on two standards drafted by our company, NB/T 42049-2015 "Metal Oxide Surge Arresters without Gap for DC Systems up to 3kV" and GB/T 25890.5-2010 "DC Switchgear for Rail Transit Ground Equipment Part 5 DC Surge Arresters and Low Voltage Limiters" (EQV IEC61992-5). It has passed comprehensive type tests at the National Quality Supervision and Inspection Center for Insulated Surge Arresters, ensuring reliable protection. At the same time, in response to the severe vibration of the locomotive roof during operation, according to the GB/T 21563 "Shock and Vibration Vibration Test for Railway Vehicle Equipment" (idt IEC61373) standard,specificallyWe conducted impact and vibration resistance tests on the product, and the test proved that the lightning arrester meets the Class 1A requirements specified in the standard. The product is equipped with a pressure release device, which can timely and effectively discharge the hot gas generated inside after the deterioration and failure of the resistor, avoiding damage to surrounding equipment and personal injury accidents caused by lightning arrester breakdown and explosion. The structure is reasonable and the performance is stable.
