BS EN 50181:2010 pdf download

BS EN 50181:2010 pdf download.Plug-in type bushings above 1 kV up to 52 kV and from 250A to 2,50 kA for equipment other than liquid filled transformers.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 60137, Insulated bushings ibr alternating voltages above I 000 V
IEC Guide 109 and Cenelec TC 111 X document l), Environmental aspects – InclUsion in electrotechn1icei product standards
NOTE It is highly reconwnonded to mirsnlize lii. ripect of buahnlp cvi the wirorwnent diving all phases ci their his finckiding rnwiulachiring. operation during service life, danianhlirig after their er elide ar disposal cv recydingl.
Ec Gisidel 09 and document by cENELEC IC ii IX, Envrronme,*& stater&raliwr for elecfrical arid ec*rcnic wodla and sysfenre after finalization can be iaed as h*ful reference
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
plug In type bushing
bushing one end o( which ts Immersed in an insulating medium which has customized dimensions according to insutation requirements for the specific application and the other end designed to receive a separabte Insulated cable connector without which the bushing cannot function
3.2
separable connector
fully insulated termination permitting the connection and disconnection of the cable to and from the mating plug-rn type bushing
interface type
bushing dimensions that insure mechanical and electrical interchangeability of bushing and separable connector of similar rating and type
4 Requirements
4.1 Application
Bushings covered by this European Standard shall be suitable for operation with one end connected to a separable connector and the olher end having customized dimensions according to the insulation requirements for the specific application.
42 Standard values of maximum voltage (Un)
The value of L4 of a bushing shall be chosen from the standard values of the highest voltage for equipment, defined in IEC 60038 as given below in kilovolt:
12—24 — 36—52
4.3 Standard values of rated current (4)
The value Ir of a bushing shall be chosen from the standard values given below in ampere:
250 – 400 – 630 – 800 – 1 250 – 1 600 – 2 000 -2 500
4.4 Compliance
Bushings which are supplied separately shall meet the requirements of EN 60137.
Customized bushings which are integrated directly in the equipment shall comply with the test reciirements specified in the standard(s) relevant to that type of equipment.
4.5 Bushing mounting distance
The minimum distance between bushings shall take into account the outer dimensions of separable connectors and the optional bail holders.
4.6 DetaIl dimensions of plug-in type bushings
4.6.1 General
The dimensions necessary to ensure adequate mounting and interchangeability of mating plug-in separable
connectors shall be as specified In the following Figures and Tables.
4.6.2 Outside cone type
The dimensmns necessary tor outside cone plug-in type bushings are specibed in Figures 1 and 2 and in Tables I and 2.