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  • 2022-10-10

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Bus Bars for Power Distribution

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As vital components for electrical power distribution in telecommunication satellites and land-based weapon systems, the bus bars and battery bars developed by Axon¡¯ ensure reliable distribution of constant energy. Bus bars and battery bars are flat which allows weight saving and better heat dissipation. They are made with silver plated pure aluminium or high conductivity aluminium alloy. Axon¡¯s bus bars and battery bars equip many satellites of the EUROSTAR 3000 platform.

bus bar.PNG


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Advantages

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Distribution of energy between the different components of the batteries:

  • Between the solar array slip ring and the power system regulator

  • Between the batteries and the power system regulator

  • Between the power supply regulator system and the different devices in the satellite

  • Between battery pack groups

Mass reduction compared to a copper solution

High electrical conductivity of pure aluminium and aluminium alloy

Improved heat dissipation in comparison with a circular power cable bundle

Voltage drop of the power distribution chain can be significantly reduced

Over 10 year experience in bus bars


bus bar2.PNG

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Construction

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The construction of bus bars can be single layer or multi-layer

Depending on the application, different types of bars can be used (U shape, E shape, I shape)

Depending on the application, bus bars are made with

  • Aluminium alloy or silver plated pure aluminium

  • Polyimide adhesive tape

  • Epoxy or polyimide coating

  • Silicone potting

  • Glass fiber tape

Bar interconnection is carried out with dismountable flexible or rigid links.

To install the bus bars onto the spacecraft walls, Axon' offers rigid and flexible fixtures.

  • Flexible fixtures enable the bar to flex with the spacecraft movement.

  • Rigid aluminium fixtures ensures fastening of the bar to the mechanical structure.

    bus bar3.PNG


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Applications

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Power distribution in telecommunication satellites and land-based weapon systems


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