The manual is often divided into device-specific documentation and hardware-specific manuals that describe the physical building blocks of the 7SR51 family. 2. Key Protection Functions & ANSI Codes
If you're looking for a manual or documentation for the 7SR511, here are a few options: 7sr511 manual
The following are some of technical specifications of 7SR511 backup protection for transformers
Suitable for feeder protection, backup protection for transformers, motors, and generators. 7sr511 manual