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Normas BSI – AENOR
BS EN 50299-1:2014

BS EN 50299-1:2014

Oil-immersed cable connection assemblies for transformers and reactors having highest voltage for equipment Um from 72,5 kV to 550 kV. Fluid-filled cable terminations

2015-01-31 /Definitive
Equivalencias internacionales:

EN 50299-1:2014

Relación con otras normas BSI:

Reemplaza a: BS EN 50299:2002


This European Standard covers the oil-immersed single-phase connection assembly of cables for transformers and reactors, designed in accordance with EN 60076 series.


In the standard the term "transformer" is used as common definition for transformer and reactor.

The purpose of EN 50299-1 is to establish for the cable assemblies:

  • the electrical and mechanical requirements, including interchangeability;

  • the limits of supply;

  • the test to be carried out.

It complements and amends, if necessary, the relevant IEC standards and applies to oil immersed cable connections, suitable for fluid-filled or dry-type cable terminations.

EN 50299-1 does not cover direct cable terminations (see, but, in this case, upon agreement between purchaser and supplier, the standard may be used for guidance except for Figure 1 and Figure 2 which are not applicable.

This standard applies to oil-immersed cable cable connection boxes on transformers with highest voltage for equipment U m = 72,5 kV to 550 kV, including the current conductor terminal at the cable sealing end of the transformer.

Rated voltage, Mechanical properties of materials, Electric cables, Electrical equipment, Interchangeability, Transformers, Oil-filled electrical equipment, Electric reactors, Electrical connections
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