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CP-D RU, CP-A RUD, CP-A RU

Redundancy modules

ABBs redundancy units are used to establish true redundant redundancy which increases the availability of electrical systems significantly. Depending on the output current and housing of power supply three different version are available:

  • CP-D RU in MDRC housing
  • CP-A RUD for a true redundant setup of two 24 V DC power supplies with a max. output current of 2.5 A per channel
  • CP-A RU for a true redundant setup of two 24 V DC power supplies with a max. output current of 20 A per channel

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Redundancy unit CP-A RUD
  • Redundancy unit with 2 inputs / channels for decoupling of both CP-E power supplies
  • Up to 2.5 A per input / channel and output up to 5.0 A
  • True redundancy due to 100 % decoupling with 2 integrated diodes 

 Redundancy unit CP-A RU

  • Decoupling of CP power supply units with 2 inputs, each up to 20 A per input / channel
  • Output up to 40 A
  • True redundancy by 100 % decoupling of two parallel connected power supplies
  • 2 integrated diodes for the decoupling of 2 switch mode power supplies up to 20 A
  • Control module CP‑A CM (accessory) is used to monitor both inputs for undervoltage. One of two relay outputs de‑energizes when undervoltage is sensed at an input. The threshold value is adjustable from 14 to 28 V. The CP‑A CM plugs onto the front of the CP‑A RU unit.

Redundancy unit CP-D RU

  • Decoupling of CP range power supply units
  • Two inputs, each up to 5 A per input / channel
  • True redundancy or increased power by 100 % decoupling of two parallel connected power supplies
  • Output up to 5 A for true redundancy or up to 10 A for increased power