Auxiliary multicore and multipair cables

Security of Supply

Emergency rated system transformers 66/20.5 kV, 66/11.5 kV and 33/11.5 kV delta/star and star/star connected

National Equipment Defect Reporting Scheme (NEDeRS®) – Notes of guidance

Stay strands and stay fittings for overhead lines

Earth rods and their connectors

Public Electricity Network Distribution Assemblies

Requirements for the Application of Protective Multiple Earthing to Low Voltage Networks

Application of ancillary electrical equipment

Environmental test requirements for protection and control equipment and systems

Insulated Aerial Bundled Conductors For Low Voltage Overhead Distribution Systems – Conductor Fittings and Associated Apparatus

Insulator Binds and Equivalent Helical Fittings for Overhead Lines

Recommendations for the safe working of utilities’ staff and other parties near light rapid transit systems

Low voltage overhead line shrouding materials

Code of practice for the coordination of power line carrier system frequencies in the range 30•0 kHz to 526•5 kHz

Aerial Bundled Conductors Insulated with Cross-Linked Polyethylene for Low Voltage Overhead Distribution

Specification for single circuit overhead pole lines for use at high voltage up to and including 33 kV

Guidance on the application of Engineering Recommendation P2, Security of Supply

Structural testing of wood poles prior to climbing or use as a personal support

400 V a.c. switchgear, controlgear and fusegear assemblies

Overhead line conductors - protection against corrosion by the application of anti-corrosion grease during manufacture

Tests on power cables with XLPE insulation and metallic sheath and their accessories, for rated voltages of 66 kV (Um = 72.5 kV), 110 kV (Um 123 kV) and 132 kV (Um = 145 kV)

Tap-changers for system voltages up to and including 132kV

Continuous Maximum Rated (CMR) system transformers (for use on systems up to 132 kV)

Partial discharge testing of bushings, capacitors, instrument transformers and switchgear of rated voltage 7.2 - 420 kV inclusive

Fault Passage Indicators up to 132kV for Underground and Overhead Distribution Systems

Issue 3 - Amendment 8

Recommendations for the Connection of Generating Plant to the Distribution Systems of Licensed Distribution Network Operators

Low voltage heat-shrinkable material components for use up to and including 600/1 000 V

Environmental classification and corrosion protection of structures, plant and equipment

Design and use of temporary scaffold guards and conductor support systems

Insulated Aerial Bundled Conductors for Low Voltage Overhead Distribution Systems – Erection Requirements

Standard numbering for small wiring (for switchgear and transformers together with their associated relay panels)

Partial discharge testing of bushings, capacitors, instrument transformers and switchgear of rated voltage 7.2 - 420 kV inclusive

Operational procedure associated with electricity supplies for traction purposes on AC and DC electrified lines

Technical Requirements for Customers’ Export and Import Limitation Schemes

Covered-conductors for overhead lines (having rated Voltages Uo/U greater than 0.6/1 kV up to and including 19/ 33 kV)

Generation Sharing Guidance

Distributed Generation Connection Guide: G98 & G99

Issue 1 – Amendment 10

Requirements for the connection of generation equipment in parallel with public distribution networks on or after 27 April 2019

Good Practice Guide to DNO Common Network Asset Indices Methodology V2.1
 

DNO CNAIM V2.0: Methodology Changes Explained

DNO Common Network Asset Indices Methodology V2.1: Health & Criticality

Engineering Recommendation G99/NI Issue 1 – Amendment 1
7 December 2023
Requirements for the connection of generation equipment in parallel with public distribution networks in Northern Ireland on or after 27 April 2019
 

Outdoor, free standing CTs & VTs up to 36 kV

Guidance on Neutral Current Diversion

Engineering Recommendation G100 Issue 2 Overview and Summary Guide

Distribution cables of rated voltage 0.6/1/ (1.2) kV with XLPE insulation, concentric waveform copper wire and solid aluminium conductors

Stay strands and stay fittings for overhead lines

Distribution transformers - Part 4 Pole mounted transformers

Environmental test requirements for protection and control equipment and systems

Overhead line conductors - protection against corrosion by the application of anti-corrosion grease during manufacture

Aerial bundled conductors insulated with cross-linked polyethylene for low voltage overhead distribution

Switchgear for service up to 36 kV (Cable and Overhead conductor connected)

Specification for single circuit overhead lines on wood poles for use at 132kV

Insulating foam-filled tube and solid rod for live working

Single core cables for use in substations having extruded insulation and rated voltages of 6350/11 000 volts, and 19 000/33 000 volts

Design and use of temporary scaffold guards and conductor support systems

Guidelines for the Provision of Low Voltage Connections to Multiple Occupancy Buildings

Switchgear for use on 66 kV to 132 kV distribution systems (Disconnectors and earthing switches)

Measures necessary to minimise corrosion damage to buried metallic structures by neighbouring cathodic protection installations

Environmental classification and corrosion protection of structures, plant and equipment

Fittings for covered conductors for overhead lines (having rated voltages U0/U greater than 0.6/1 kV up to and including 19/33 kV)

Portable earthing equipment for overhead lines and substations

Complexity of Distribution Circuits Operated at or above 22kV

Guidance for the operation and management of fluid filled cables. This document replaces ETR 135.

Power installations exceeding 1 kV a.c. – Design of high-voltage open-terminal stations

Switchgear for use on 66 kV to 132 kV distribution systems Part 5 Inductive voltage transformers, capacitor voltage transformers, combined unit transformers and current transformers for use on 72.5 kV to 145 kV distribution systems

XLPE covered-conductors for overhead lines (having rated voltages Uo/U greater than 0.6/1 kV up to and including 19/33 kV)

Specification for single circuit overhead lines of compact covered construction on wood poles for use at high voltage up to and including 33 kV

Type approval tests for mechanical connections to metallic sheaths of cables Addendu

Structural testing of wood poles prior to climbing or use as a personal support

Calculation of fault currents in three-phase AC power systems (Application Guide to Engineering Recommendation G74)

Guide to the application of Engineering Recommendation G5/4 in the assessment of harmonic voltage distortion and connection of non-linear equipment to the electricity supply system in the U.K

Operational procedure associated with electricity supplies for traction purposes on AC and DC electrified lines

Security of Supply

Requirements for the Application of Protective Multiple Earthing to Low Voltage Networks

Harmonic voltage distortion and the connection of harmonic sources and/or resonant plant to transmission systems and distribution networks in the United Kingdom

Harmonic voltage distortion and the connection of harmonic sources and/or resonant plant to transmission systems and distribution networks in the United Kingdom

Guidance on the application of Engineering Recommendation P2, Security of Supply

Issue 3 - Amendment 8

Recommendations for the Connection of Generating Plant to the Distribution Systems of Licensed Distribution Network Operators

Analysis package for assessing the security contribution from distributed generation and electricity storage systems – Users’ guide

Analysis Package For Assessing Generation Security Capability - Users' Guide

Framework for new low voltage housing development installations - Part 1 Design and planning

Framework for new industrial and commercial underground connections - Part 4 Design and planning

Issue 2 Amendment 3 
Recommendations for the Connection of Type Tested Small-scale Embedded Generators (Up to 16A per Phase) in Parallel with Low-Voltage Distribution Systems

Voltage fluctuations and the connection of disturbing equipment to transmission systems and distribution networks in the United Kingdom

Guidelines for the design, installation, testing and maintenance of main earthing systems in substations

A guide for assessing the rise of earth potential at electrical installations

Framework for new low voltage housing development installations - Part 2 Materials specification

Framework for new low voltage housing development installations - Part 3 Installation and records

Framework for new industrial and commercial underground connections - Part 5 Materials specification

Framework for new industrial and commercial underground connections - Part 6 Installation and records

Framework for contestable diversionary and reinforcement works not exceeding 33 kV - Part 7 Contestable diversionary and reinforcement works

Guidelines for the Provision of Low Voltage Connections to Multiple Occupancy Buildings

Distributed Generation Connection Guide: G98 & G99

Engineering Recommendation G99/NI Issue 1 – Amendment 1
7 December 2023
Requirements for the connection of generation equipment in parallel with public distribution networks in Northern Ireland on or after 27 April 2019
 

Issue 1 Amendment 4 
Requirements for the connection of generation equipment in parallel with public distribution networks on or after 27 April 2019