Description

Keystone ZnO lighting Arrester is one kind most world advanced over-voltage protector at present. Due to its core components of resistance applying ZnO and other metal oxide to make of, comparing with traditional carborundum arrester, it improves greatly V-A characteristics of Resistance, increases the getting trough ability of resistance, thereby it brings fundamental Under normal working voltage, the current passing arrester only A class, when bearing over voltage, the excellent non-linear V-A features of arrester would make effect, the current passing through the arrester increase high to thousands of Ampere instant, the arrester is under getting through state, to release over-voltage energy, therefore it effective limits the damage to power transmission equipments due to over Voltage. Appliance ZnO Lighting Arrester, is one kind protecting equipment preventing electric equipments in AC power system from High voltage and over-voltage operation. Using Environments a) Ambient temperatur e no higher than ï&frac*4;‹*0℃, no less than **0℃ï&frac*4;› b)Above Sea Level no higher than ***0mï&frac*4;ˆorder should be indicated if used in tableland areaï&frac*4;‰; c) Power frequency not less than *8Hz, and no higher than *2Hzï&frac*4;› d) Continu ous power frequency voltage loaded on lighting arrester no higher than continuous working voltage of lighting arrester; e) Utmost wind velocity no higher than *5m/sï&frac*4;› f) Area where earthquake intensity less than 7 degree. *Messy area should be indicated. Normal operating conditions for lighting arrester: Technical Performance The technical performance of the prodect is in conformit to GB*********0, IEC******4