2022-08-17
2022-06-30
The Zinc Oxide lighting arrester are used for protection of electrical equipment from all kind of over-voltages caused by lightening or switching operations. Surge arresters are made of metal-oxide (MO) resistors without spark gaps directly molded in silicone housing, in gray color or red color, and designed and tested according to IEC 60099-4 and IEC 62848-1.
Compared with the conventional silicon carbide arrester, this presciption of the product improves greatly the volt-Ampere characteristics of the resistor disc and increased through-current capability at over-voltage so as to during a radical changes for the characteristics of the arresters. Under the circumstance of normal operating voltage, the current through the arrester is just on microampere degree, When suffered from over-voltage, the arrester’s excellent nonlinear characteristics will make the current through the arrester increase to several thousand ampere, while the arrester will be under the circulating state and release over-voltage energy so as to protecting the power transmission equipment against the damage caused by the over-voltage.
Product characteristic
5.With DC reference voltage, rectangular flow capacity and high current and large current withstand capacity are higher than standard requirement.