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The CRSI Design Handbook has been the reference book for cast-in-place reinforced concrete design since 1952. The 10th edition provides the necessary information needed for common reinforced concrete structural members such as columns, beams, footings, pile caps, retaining walls, and...
This CP gives a description of the procedures and requirements related to documentation, design and type testing applicable for TA of bus trunk. This CP does not set the design requirements to the bus trunk. TA is based on compliance with design requirements given in the DNV GL...
PURPOSE AND SCOPE This Specification describes the functional and performance requirements and the facilities to be provided for the numerical protection of busbars at 400 kV, 275 kV and 132 kV double busbar switching stations. It also defines the interfaces to the appropriate bay...
Busbars supplying SSI equipment. Purpose This Notice Board is a reminder that, if any TFM connected to a particular busbar operates a relay, the routine Busbar Earth Tests specified in NR/SMS/Test/051 are required.
Scope and object Add the following paragraphs: This International Standard applies to busbar trunking systems (BTS) and their accessories for feeding and distributing electrical power in residential, retail, public, agricultural and industrial premises. It also applies to busbar...
This Recommendation applies to commercial-purity aluminium busbar material.
PURPOSE AND SCOPE This document forms part of a suite of documents, which define National Grid's (NG) functional and performance requirements for new plant and equipment for the use on the NG UK Electricity Transmission system. This Specification covers the requirements, which are applicable to all...
Requirements for busbars and busbar connections which are components of a.c. high voltage electrical systems (above 1 kV), composed of metal, with air, oil, gas, solid or semi-solid insulation.
Specifies the performance requirements for the relays and the parameters whose values are to be declared by the manufacturer. Recommends methods of presenting the characteristics and performance of these relays. Applies to relays designed to detect faults, particularly in a.c. generators,...
PURPOSE The purpose of this procedure is to outline the recommended practice for commissioning numerical Busbar Protection on the National Grid system. This covers protection installed on new sites and also asset replacement of existing high impedance schemes. This document should be used in...
PURPOSE AND SCOPE This procedure details the requirements for the preparation of contingency plans to be implemented in the event of a failure, unplanned outage, planned depletion or asset replacement of a complete numerical busbar protection system fitted at a 400 or 275kV double...
This Specification describes the functional and performance requirements and the facilities to be provided exclusively for the protection of busbars at 400 kV and 275 kV double busbar switching stations.
NOTE 1 Throughout this part, the abbreviation BTS is used for a busbar trunking system. Where reference to Part 1 is made, the term ASSEMBLY therefore reads as "BTS". This part of IEC 61439 lays down the definitions and states the service conditions, construction requirements, technical...
NOTE 1 Throughout this part, the abbreviation BTS is used for a busbar trunking system. Where reference to Part 1 is made, the term ASSEMBLY therefore reads as "BTS". This part of IEC 61439 lays down the definitions and states the service conditions, construction requirements, technical...
NOTE 1 Throughout this part, the abbreviation BTS is used for a busbar trunking system. Where reference to Part 1 is made, the term ASSEMBLY therefore reads as "BTS". This part of IEC 61439 lays down the definitions and states the service conditions, construction requirements, technical...
PURPOSE AND SCOPE This document provides details for the preparation of contingency plans to be implemented in the event of a failure or unplanned outage of a complete numerical busbar protection system fitted at a 400 or 275kV double busbar substation.
