• There are no items in your cart

BS EN 50121-5:2015

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Railway applications. Electromagnetic compatibility Emission and immunity of fixed power supply installations and apparatus

Available format(s)

Hardcopy , PDF

Superseded date

02-05-2019

Language(s)

English

Published date

31-03-2015

This European Standard applies to emission and immunity aspects of EMC for electrical and electronic apparatus and systems intended for use in railway fixed installations for power supply. This includes the power feed to the apparatus, the apparatus itself with its protective control circuits, trackside items such as switching stations, power autotransformers, booster transformers, substation power switchgear and power switchgear to other longitudinal and local supplies. Filters operating at railway system voltage (for example, for harmonic suppression or power factor correction) are not included in this standard since each site has special requirements. Filters would normally have separate enclosures with separate rules for access. If electromagnetic limits are required, these will appear in the specification for the equipment. The limits in this standard do not apply to intentional communication signals. The frequency range considered is from DC to 400Ghz. No measurements need to be performed at frequencies where no requirement is specified. Emission and immunity limits are given for items of apparatus which are situated: within the boundary of a substation which delivers electric power to a railway; beside the track for the purpose of controlling or regulating the railway power supply, including power factor correction; along the track for the purpose of supplying electrical power to the railway other than by means of the conductors used for contact current collection, and associated return conductors. Included are high voltage feeder systems within the boundary of the railway which supply substations at which the voltage is reduced to the railway system voltage; beside the track for controlling or regulating electric power supplies to ancillary railway uses. This category includes power supplies to marshalling yards, maintenance depots and stations; various other non-traction power supplies from railway sources which are shared with railway traction. The immunity levels given in this standard apply for vital equipment such as protection devices; equipment having connections to the traction power conductors; apparatus inside the 3m zone; ports of apparatus inside the 10m zone with connection inside the 3m zone; ports of apparatus inside the 10m zone with cable length>30m. Apparatus and systems which are in an environment which can be described as residential, commercial or light industry, even when placed within the physical boundary of the railway substation, shall comply with the relevant generic European EMC standard. Excluded from the immunity requirements of this standard is power supply apparatus which is intrinsically immune to the tests defined in Tables1 to 6 of this standard. NOTE An example is an 18 MVA 230kV to 25kV power supply transformer. These specific provisions are to be used in conjunction with the general provisions in EN50121‑1 . This part of the standard covers requirements for both apparatus and fixed installations. The sections for fixed installations are not relevant for CE marking.

Committee
GEL/9
DocumentType
Standard
Pages
26
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

View more information

Access your standards online with a subscription

Features

  • Simple online access to standards, technical information and regulations.

  • Critical updates of standards and customisable alerts and notifications.

  • Multi-user online standards collection: secure, flexible and cost effective.