IEC 61897-ed.2.0

Podrobné informácie

Označenie: IEC 61897-ed.2.0

Dátum vydania: 03.03.2020

Stránok: 58

Krajina: Medzinárodná technická norma

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Anotácia

IEC 61897:2020 applies to aeolian vibration dampers intended for single conductors or earth wires or conductor bundles where dampers are directly attached to each subconductor. The purchaser may adopt part(s) of this document when specifying requirements for cables different from those mentioned above (e.g. optical ground wires (OPGW), all dielectric self-supporting optical cables (ADSS)). In some cases, test procedures and test values are left to agreement between the purchaser and the supplier and are stated in the procurement contract. Annex A lists the minimum technical details to be agreed between purchaser and supplier. Throughout this document, the word “conductor” is used when the test applies to dampers for conductors or earth wires. This second edition cancels and replaces the first edition published in 1998. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Consider, in addition to Stockbridge type aeolian vibration dampers, also spiral aeolian vibration dampers and elastomeric aeolian vibration dampers. b) Consider the application of dampers on high temperature conductors, specifying additional high temperature tests in clamp slip tests. c) Simplify the procedure of the damper effectiveness evaluation. d) Introduce test at low temperature on fastener components such as break away bolts and conical spring washers. e) Include figures showing the test arrangements for the main mechanical tests. Key words: Overhead Lines, Aeolian Vibration Dampers IEC 61897:2020 sapplique aux amortisseurs de vibrations eoliennes pour conducteurs uniques ou cables de garde, ou aux faisceaux de conducteurs lorsque les amortisseurs sont directement relies a chaque sous-conducteur. Lacheteur peut adopter un ou plusieurs fragments du present document lors de la specification dexigences concernant des cables differents de ceux mentionnes ci-dessus, par exemple les cables de garde optiques (OPGW, Optical Ground Wire) ou les cables optiques autoporteurs entierement dielectriques (ADSS, All Dielectric Self-Supporting). Dans certains cas, les procedures et valeurs dessai sont convenues entre lacheteur et le fournisseur et sont indiquees dans le contrat dapprovisionnement. Lannexe A contient les informations techniques minimales a convenir entre lacheteur et le fournisseur. Dans le cadre du present document, le mot "conducteur" est utilise lorsque lessai sapplique aux amortisseurs pour conducteurs ou cables de garde.