scope:

PURPOSE AND SCOPE

This Specification defines National Grid's technical requirements for fault recording.

Fault recording equipment is required to provide monitoring of system faults. This Specification describes the functional and performance requirements for fault recording on National Grid's 400 kV, 275 kV and 132 kV systems.

The requirements are applicable for each feeder end as specified within the Bay Specifications.

Common requirements for all System Monitoring are given in NGTS 3.24.68. Fault Recording is one of three functions specified.

Where the fault recording function is integrated within another item of equipment, then this Specification shall form a part of the overall Specification for the equipment hosting the fault recording function ie NGTS 3.24.68, System Monitor Common Requirements.

See Appendix A at the end of this TS for fault recording integrated within protection.