scope:

PURPOSE AND SCOPE

The purpose of this document is to define the procedural arrangements for Type Registered equipment.

Where applicable, the document should be read in conjunction with the Technical Guidance Note relevant to the technology to be Type Registered.

Type Registration is a documented, risk managed process, which enables National Grid to verify that specified equipment purchased for use on, or directly connected to, National Grid's Electrical Transmission System complies with National Grid's Technical Specifications (TS), International Electrotechnical Commission (IEC) or other relevant specifications and is thereby deemed suitable for the intended application.

As defined in National Grid Policy documents PS(T) 003 - Type Registration and PS(T) 048 - Standard Bay Solutions, the policy is to register complete sub-system Solutions e.g. substation control and protection solutions, transformers, overhead line conductor and cable systems or Components where deemed appropriate. This can include protection modules. For the purposes of Type Registration, the term Solution shall apply to;

• All primary equipment connected directly to the Electricity Transmission System
• All secondary equipment directly controlling or protecting the Electricity Transmission system
• All secondary equipment that could impact the integrity of the prime function of the primary equipment.
• All auxiliary equipment supporting the primary and secondary equipment.

Items of plant or equipment that are constructed on site from raw materials and items relating to site services facilities e.g. structures, fencing, oil separators, which require site-specific applicationengineering effort are outside of the scope of the Type Registration process. Where this is the case, guidance on the application and installation of such items may be obtained from reference to the relevant Technical Specifications, Technical Guidance Notes etc. For further details of equipment not subject to Type Registration/Technical Specification refer to appendix 'G' A list of Solutions and equipment to which the Type Registration process applies, is shown in the attached Appendix 'A'. It should be noted that the lists are not exhaustive and may be updated as and when considered appropriate by the National Grid - Type Registration Engineer.

The only exception to this process is for trial Solutions following the New Technology Process PS(T)13

Confirmation of Type Registration does not absolve the Solution Provider from its responsibilities for compliance with all relevant legal and regulatory requirements. Compliance with National Grid TS, National or International Specifications is also assumed unless specifically listed as a nonconformance.