A surge arrester is a device to protect electrical equipment from over-voltage transients caused by external (lightning) or internal (switching) events. Also called a surge protection device (SPD) or transient voltage surge suppressor ( TVSS), this class of device is used to protect equipment in power transmission and . ABB offers a complete range of surge arresters for high and medium voltage applications. The range comprises of AC and DC solutions up to 100kV and arresters for special applications like railways, DC-voltage limiting devices and many other purposes.
ABB has more than years of experience in designing and manufacturing surge arresters. ABB surge arresters are made of metal oxide (MO) resistors without spark gaps directly .
A typical surge arrester has both a ground terminal and a high-voltage terminal. When a powerful electric surge travels from the power system to the surge arrester , the high voltage current is sent directly to the insulation or . Cooper Power Systems surge arrester products are manufactured for reliable service in low voltage, distribution, riser pole, intermediate, and station class applications. We offer the largest selection of surge arresters for overhead and underground applications in the industry. Some overvoltages are very high in energy. The current from the surge is diverted through the arrester, in most cases to earth.
Effective over- voltage protection requires different surge arrester types to be used according to the particular application. At the end of its life, a thermal protector integrated into the surge arrester: ○ isolate the surge arrester from the rest of the installation.
The upstream protection of . TVSS (Transient Voltage Surge Suppressor). Surge Arresters from EPCOS include 2-Electrode and 3-Electrode Arresters. The main purpose of the surge arrester is to provide a conductive path for unwanted and excessive transients, thereby preventing the transient energy and voltages from . Search the TE Connectivity Bowthorpe Catalog. At normal operating voltages, the surge arrester must behave like an insulator, isolating the phase conductor from ground. Plant availability is increased!
Windings in electric machinery are particularly sensitive to overvoltages, especially in case of exceedingly steep wavefront: the steeper is the voltage wavefront the worst is the voltage distribution along the windings, creating the conditions for damage. Click here for detailed product scope information. Surge arresters are applied to protect electronic components of a plant against overvoltage! Section activities focus on these products: High voltage surge arresters.
Please see the section scopes document, available in the right column,. Zinc oxide elements that can be used in various types of surge arresters. It supports special applications.
Continuous research and development, the wealth of Siemens know-how, and comprehensive worldwide experience give Siemens surge arresters a leading edge in overvoltage . Part 1: Fundamentals covers the functioning, construction and the layout of the metal-oxide surge arresters. This part offers a quick overview without going into great detail.
Those sections which have been simplified for the sake of clarity, will contain references to the second part where extensive explanations can be found. Raychem offers surge arresters for medium voltage power distribution systems that are designed to reliably protect your valuable assets from overvoltage. They can withstand severe outdoor exposure over long operating lifetimes and help maintain service reliability in both overhead and underground installations. Low voltage surge arresters.
Over voltage protection is needed e. The most effective means of protection is the use of surge arresters in the vicinity of electricity equipment. It has been designed to be used with the 430TB or 434TB separable tee connector.