132 pages Buyer's Guide: ABB surge arresters are the primary protection against atmospheric and switching overvoltages. They are generally connected in parallel with the equipment to be protected to divert the surge current. The active elements (ZnO blocks) of ABB surge arresters are manufactured using a highly non-linear ceramic resistor material, composed primarily of zinc oxide mixed with other metal oxides and sintered together.
Strong focus on quality at all stages, from raw material through to finished product, ensures that ABB surge arresters survive the designed stresses with ease and with good margins. Different dimensions permit a large variety of standard arresters as well as client-specific solutions as regards protection levels and energy capability.
This Buyer’s Guide deals with high voltage surge arresters for standard AC applications. For other applications, such as series capacitors protection, shunt capacitor protection or DC applications, contact your ABB sales representative. surge arresters in SF6 gas-insulated design for mounting on all commercial GIS switchgear.
AN 1.3 Arresters are typically installed phase to earth. In some specific cases
it may be necessary to install additional MO surge arresters between
the phases as well. The application note describes how to select surge arresters in these cases.
AN 2.0 describes basic principles of transformerprotection. You will find the answers about the transient ovevoltages through transformer and selection of surge arresters for transformers with examples.
Overvoltage protection.Selection of MO surge arresters
AN 1.1 describes basic principles of MO surge arresters selection. You will find the answers about what input data is needed, what are the service conditions, what is important for the choice and what steps are to be taken to choose correct surge arresters.
AN 1.0 describes basic principles of equipment protection. You will find the answers about what is overvoltage, what types of overvoltage can appear in the system, what equipment need overvoltage protection and what are economic considerations for it.