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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 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.
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 rules and/or other...
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.
The purpose of this procedure is to specify the arrangements for the primary and secondary injection of an additional circuit of busbar protection, for a High Impedance circulating current scheme with a single (duplicated) relay per zone. Informative: Such installations are typically...
This International Standard provides general rules for the use of certain colours or alphanumerics to identify conductors with the aim of avoiding ambiguity and ensuring safe operation. These conductor colours or alphanumerics are intended to be applied in cables or cores, busbars,...
This International Standard provides general rules for the use of certain colours or numerals to identify conductors with the aim of avoiding ambiguity and ensuring safe operation. These conductors may be applied in cables or cores, busbars, electrical equipment and installations. It...
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.
IEC 62995:2018 specifies requirements for the installation of cabling on railway vehicles and within electrical enclosures on railway vehicles, including magnetic levitation trains and trolley buses. This document covers cabling for making electrical connections between items of electrical...
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.
This recommendation applies to heat-treated aluminium alloy busbar material of the AL-Mg-Si type.
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...
PURPOSE AND SCOPE PS(T)010 states that when a Numeric Busbar Protection is out of service for unacceptable period of time a contingency plan shall be applied. UKBP/TP162 details how to implement the above policy. This report is assessing the risks of adopting a Numeric Protection System...
