scope:

This module specifies the requirements for the following types of ancillary conductors:

• Auto Transformer Feeders;

• Return Conductors;

• Aerial Earth Wires;

• In Feeders;

- Across Track;

- Along Track.

It is applicable to the modification to, renewal of, or new railway subsystems.

This module is applicable to all designers undertaking Overhead Contact System (OCS) design for Network Rail.

Purpose

The purpose of this module is to specify the Network Rail requirements to meet legislative requirements and to achieve safety, economy and performance when designing or evaluating the designs for Auto Transformer Feeders (ATF) and other ancillary conductors.

This module provides a common strategy to demonstrate compliance and optimise the design of railway subsystems, but is not intended to reiterate legislation and governing standards.