NR NR/L2/ELP/27550 ISSUE 2 PDF

This standard describes the end-to-end processes required when producing Traction Power Isolation documentation for the following: 
a) Isolation diagrams and instructions (ISO) 
b) Comprehensive Track diagrams (CTD) 
c) Alternate Feeding diagrams (AFD) 
d) Major Feeding Diagrams (MFD) 
e) Substation Operation diagrams (SOD) 
f) HV distribution 267 diagram

Purpose 
This standard sets out the detailed requirements necessary for all Traction Power Isolation documentation produced by or on behalf of Network Rail to maintain a consistent standard in terms of content, format and overall appearance. The main benefit will be control measures to support safe operation and maintenance of traction power system