ECSS-E-HB-20-20A – Guidelines for electrical design and interface requirements for power supply (15 April 2016)


In general terms, the scope of the consolidation of LCLs power distribution interface requirements in the ECSS-E-ST-20-20 and the relevant explanation in the present handbook is to allow a more recurrent approach for the specific designs offered by power unit manufacturers, at the benefit of the system integrators and of the Agency, thus ensuring:

  • better quality,
  • stability of performances, and
  • independence of the products from specific mission targets.


A recurrent approach enables power distribution manufacturing companies to concentrate on products and a small step improvement approach that is the basis of a high quality industrial output.
In particular, the scope of the present handbook is:

  • to explain the principles of operation of power distribution based on LCLs,
  • to identify important issues related to LCLs, and
  • to give some explanations of the requirements set up in the ECSS-E-ST-20-20 for power distribution based on LCLs, for both source and load sides.

This handbook supports ECSS-E-ST-20-20C (15 April 2016) “Space engineering – Electrical design and interface requirements for power supply”


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