Protection relays for digital substations
High-performance protection makes your power supply future-proof
Protection relays are essential for network operators, electricity suppliers, and industrial enterprises in every sector. For over 100 years, Siemens has been offering successful and always innovative SIPROTEC and Reyrolle protection relays and technologies. This means long-term user satisfaction with the products and solutions, with services, and with a partnership with a genuine global player. Siemens is the ideal partner for overcoming the challenges of the digital future.
Single Event Upset (SEU) - A physical phenomenon and SIPROTEC 5 measures
With the advancement of semiconductor technology in the nanometer range, a physical phenomenon, which was typically only observed in aerospace engineering up to now, has become also relevant to numerical protection devices. This white paper give an overview of the causes and effects of SEUs, as well as the solutions that SIEMENS uses to maintain the reliability of its SIPROTEC 5 products.
Protection relay products and software - Secure and efficient grid operation
Easy protection relay selector
This tool gives a quick guidance to find a protection relay of SIPROTEC 5, SIPROTEC 4, SIPROTEC Compact, Reyrolle which would fit your needs.
Easy relay retrofit selector
Easy tool to find the right Siemens protection relay for your retrofit projekt.
Topics and applications
Solutions with SIPROTEC and Reyrolle protection relays
Highest availability even in harsh environment
SIPROTEC 5 and SIPROTEC Compact – Conformal Coating as standard
The new coating feature provides an additional level of protection for SIPROTEC devices used in extremely harsh environmental conditions.
With SIPROTEC 5, Siemens is offering the most comprehensive protection portfolio in the industry.
SIPROTEC 5 sets the benchmark for protecting, automating, and monitoring your network. As an incomparably modular, flexible generation of intelligent digital field devices, SIPROTEC 5 offers a comprehensive product family with modular elements for every application and requirement that can be precisely configured to your application.
SIPROTEC 5 delivers maximum protection and flexibility throughout the entire lifecycle. Take advantage of the leading provider in the field of protection, a global partner that supports you every step of the way.
Protecting Grids with Confidence
The protection, control, monitoring and measuring of our power networks is a vital element in managing our electrical assets, increasing reliability, sustainability and the safety of operating personnel. Our goal is to provide protection devices which provide flexible solutions and easy integration into an energy market which is becoming increasingly decentralized and digitalized. With the new Reyrolle5 we have listened to the changing needs of our customers.