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  • BSI
    DD CLC/TS 50537-4:2010 Railway applications. Mounted parts of the traction transformer and cooling system - Gas and liquid actuated (Buchholz) relay for liquid immersed transformers and reactors with conservator for rail vehicles
    Edition: 2010
    $313.97
    / user per year

Description of DD CLC/TS 50537-4:2010 2010

This Technical Specification covers gas and liquid actuated (Buchholz) relays for liquid immersed transformers and reactors with conservator for rail vehicles.

The device is intended to detect

  • gas release from the unit to be protected,

  • cooling liquid surge from the protected unit to the conservator,

  • complete loss of the cooling liquid in the conservator.

This Technical Specification gives consideration to both technical and normative requirements of the railway environment and restricts the variety in particular provided by the industry-wide standard EN 50216-2. It determines requirements and tests enabling the interchangeability of Buchholz relays by defining the following types of interfaces:

  • mechanical interface, e.g. flanges for pipe connection, dimensions;

  • electrical interface, e.g. supply voltage for making and breaking capability;

  • functional interface, e.g. protective operational behaviour.

It is not applicable to flameproof relays. Different liquids may be used, which are typically used for both cooling and insulating.

Furthermore, operating conditions are described.



Standard NumberDD CLC/TS 50537-4:2010
TitleRailway applications. Mounted parts of the traction transformer and cooling system - Gas and liquid actuated (Buchholz) relay for liquid immersed transformers and reactors with conservator for rail vehicles
StatusUnder Review
Publication Date2010-04-30
Identical National Standard OfCLC/TS 50537-4:2010
DescriptorsCooling systems, Railway equipment, Relays, Oil-immersed transformers, Electric reactors, Railway vehicles, Transformers, Oil-filled electrical equipment, Railway electric traction equipment, Electrical equipment
ICS45.060.10 Tractive stock, 29.120.70 Relays, 29.180 Transformers. Reactors
CommitteeGEL/9/2
ISBN978 0 580 69509 4
PublisherBSI
Pages20

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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