This file is the specification of Siemens' 3ES series surge arrester, which introduces the features of this series of surge arresters, including excellent pollution layer characteristics, high mechanical stability, extremely reliable pressure relief behavior, etc. This series of surge arresters are suitable for various applications and have economic, practical, stable continuous running, excellent protection level and loading capacity.
This manual presents Siemens' complete portfolio of high‑voltage surge arresters, covering three housing designs – porcelain, polymer and metal enclosures. It explains how each type can be tailored to meet specific requirements such as excellent pollution performance, high mechanical stability for seismic zones, and reliable pressure‑relief behavior.
The document includes detailed technical data for the 3EL, 3EQ, 3ES and related series, special‑application models, and GIS‑compatible versions. It also outlines the manufacturing facilities, testing capabilities, and contact information for ordering and technical support.
| Nominal system voltage (max.) | 150/220 kV |
|---|---|
| Highest voltage for equipment (max.) | 170/245 kV |
| Maximum rated voltage | 156/216 kV |
| Maximum nominal discharge current | 20 kA |
| Maximum short‑circuit rating | 50 kA |
| Housing material | Metal |
| Pressure relief device | Yes |
Siemens offers surge arresters with porcelain housings, polymer housings, and metal‑enclosed housings.
They can protect transformers, generators, motors, capacitors, traction vehicles, cables, and complete switchgear.