Natural Drainage Units

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Description

Natural Drainage Units

Natural Drainage Units a South African development used to return current leaving a DC traction system and finding its way onto a buried pipeline, causing the pipeline to corrode if not implemented.

NDU’s are utilized to direct current to a structure from a pipeline when the pipeline is more positive than the relevant structure.

This type of Cathodic Protection is only used where the current requirements are small.

NDU’s Features:

  • DC drain up to 600 Amps steady state
  • 4000V blocking voltage in reverse direction
  • Class 1 surge protection

Specifications:

  • Unit, 4000V, drain up to 600A

 

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