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PURPOSE AND SCOPE This Technical Guidance Note (TGN), in conjunction with related functional specifications, details the requirements for Selective Protection Asset Replacement (SPAR) within TPS 5/33 and hard-wired feeder bay protection panels/cubicles on feeder bays at double busbar and...
This European Standard describes the method to evaluate the performance of protective sys-tems for electrical cable and busbar systems in order to maintain the circuit integrity under fire conditions to classify the protective system according to EN 13501-3 for the P classification. The test...
Applicability This manual covers the design and maintenance of the Network Rail DC Electrification system:- • That part of Network Rail's 750V third rail electrification system that lies between the outgoing terminal of the substation DC circuit breakers and the point of delivery of electrical...
PURPOSE AND SCOPE This document defines National Grid's policy for the protection arrangements and settings to be applied on its 400kV and 275kV transmission network and lower network voltages at 132kV, 66kV, 33kV and 13kV. Additionally the principles of this document shall be applied to other...
This document applies to the identification and marking of terminals of electrical equipment such as resistors, fuses, relays, contactors, transformers, rotating machines and, wherever applicable, to combinations of such equipment (e.g. assemblies), and also applies to the identification of...
This European Standard applies to cast aluminium alloy enclosures pressurized with dry air, inert gases, for example sulphur hexafluoride or nitrogen or a mixture of such gases, used in indoor or outdoor installations of high-voltage switchgear and controlgear above 1 kV, where the gas is used...
Includes: HV Switchgear and busbars HV Transformers (Inc. voltage and current transformers) Traction Rectifiers DC LV Switchgear and busbars Catastrophic failure can be defined as either a disruptive failure of the equipment or electrical flashover causing damage to the equipment and...
NEW!IEC 60445:2017 is available as IEC 60445:2017 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC...
PURPOSE AND SCOPE This technical guidance note provides model calculations on the use Eurocodes for the design of substation structures using TS 3.01.04 Issue 3 Busbar systems for AIS Substations. The model calculations are there for guidance only and should be used by professionally...
This document applies to the identification and marking of terminals of electrical equipment such as resistors, fuses, relays, contactors, transformers, rotating machines and, wherever applicable, to combinations of such equipment (e.g. assemblies), and also applies to the identification of...
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...
This European Standard applies to cast aluminium alloy enclosures pressurized with dry air, inert gases, for example sulphur hexafluoride or nitrogen or a mixture of such gases, used in indoor or outdoor installations of high-voltage switchgear and controlgear above 1 kV, where the gas is used...
This Standard applies to switching and metering centres (hereafter may be referred to for convenience as metering centres or centres) rated 600 V and less, intended to be used in accordance with the Rules of the Canadian Electrical Code, Part I, in nonhazardous locations, to provide switching,...
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 in...
Fuses for use by authorized persons are generally designed to be used in installations where the fuse-links are accessible to, and may be replaced by, authorized persons only. Fuses for use by authorized persons according to the following fuse systems also comply with the requirements of the...
Subclause 1.1 of IEC 62271-1:2007 is not applicable, and is replaced as follows: This part of IEC 62271 is applicable to three-pole alternating current switches for rated voltages higher than 52 kV, having making and breaking current ratings, for indoor and outdoor installations, and for rated...
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.
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...
This part of IEC 60092 specifies requirements for all electric propulsion plants and gives the specifications, system design, installation and testing of at least: - generators and their prime movers; - switchboards; - transformers/reactor
Introduction In order to reduce the risk of bypass paths causing wrong side failure of the track circuit, section 4.1.3 of the EBI Track 400 Technical Manuals [1][2] requires that the 48V DC supplies to the transmitter and receiver are earth free. The EBI Track 400 Transmitter contains a measuring...
