Relay and Instrument Diagrams are for individual substations and show a high level of detail.
Relay and Instrument Diagrams are for individual substations and show a high level of detail.
To make available the latest relay and instrument information, a diagram may be unapproved by Transpower. An unapproved drawing is for information only and is stamped UNCONTROLLED COPY and should be used with caution.
They should be used when any reference is required for switching, making safe, and other operational actions that can affect personnel safety or power system security.