Relay

Introduction In this article, we focus on how to Set Siemens 7SR1003 relay parameters for protection of a 3 MVA, 33/0.433 KV Transformer using the example of a 33kV Substation with SEIMENS Switchgear. 7SR1003 Relay basically known as Nondirectional O/C Relay provides phase overcurrent (50/51) and earth fault (50N/51N) protection. Protection Function Packages : Standard version … Read more