NR RT/E/WI/27076 ISSUE 1 PDF

Introduction

This Instruction covers the maintenance procedure for all types of voltage regulator and regulating transformer for signalling supplies on 25 kV A.C. Electrified Lines. It also includes the indoor control panel associated with the voltage regulator. The frequency of inspection shown shall be regarded as normal, but may increase at the discretion of the Area Electrification Engineer, where local conditions require this.

Before commencing any work which involves interruption to any supply, including Standby Supplies the consumer shall be given adequate notice by the A.E.E.'s authorised representative, and agreement obtained in appropriates cases.

Whenever possible, maintenance of any associated apparatus e.g. Transformers, H.V.A.C. Distribution Boards, Changeover Equipment, shall be carried out concurrently in order to minimise interruptions to supplies. The maintenance procedures for those equipments are contained in separate Standing Orders.

Further detailed requirements peculiar to individual types of equipment are the subject of separate Orders.

All inspection schedules are comprehensive, and incorporate any inspections of shorter periodicity.

Defects found during the course of this work, whether within the scope of this Order or not, must be immediately dealt with, as may be appropriate, and recorded on the Substation Log Book.

After completion of maintenance, all locks, keys and tools shall be returned clean to their respective places. 1.6 All safety precautions, including permit-to-work, if applicable, must be observed