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Solid state decoupler

Type:Auxiliary materials

Features:With the wide application of cathodic protection technology in buried steel pipeline, the stability of cathodic protection system has attracted much attention. But in real life,

Release DATE:2021-06-22

electromagnetic interference is everywhere, and the influence of electromagnetic interference on pipeline cathodic protection system also exists. Because electromagnetic interference can cause the failure of cathodic protection, accelerate corrosion and damage to impressed current equipment, it is very important to solve the problem of interference in cathodic protection system. The usual method to solve the electromagnetic interference is to install a drainage device on the pipeline. The drainage device can effectively solve the electromagnetic interference problem and limit the pipeline potential to a reliable level. However, the existing discharge device also has some problems. For example, it can only withstand the electromagnetic interference with relatively small amplitude, and can not solve the interference of strong energy such as direct lightning current and induced lightning current. Solid state descoupler can well solve the fault grounding short circuit current of high voltage line, the grounding current of the lightning arrester line at the top of high voltage line struck by lightning, and the stray current generated when the train passes through the railway. This product can protect the influence of over-voltage or over-current generated by the above conditions on the cathodic protection of pipelines, prevent the aggravation of corrosion of pipelines due to electromagnetic interference, and play an effective role in the protection of pipeline equipment.

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       Product type: Solid state decoupler

  I. Product details

  With the wide application of cathodic protection technology in buried steel pipeline, the stability of cathodic protection system has attracted much attention. But in real life, electromagnetic interference is everywhere, and the influence of electromagnetic interference on pipeline cathodic protection system also exists. Because electromagnetic interference can cause the failure of cathodic protection, accelerate corrosion and damage to impressed current equipment, it is very important to solve the problem of interference in cathodic protection system. The usual method to solve the electromagnetic interference is to install a drainage device on the pipeline. The drainage device can effectively solve the electromagnetic interference problem and limit the pipeline potential to a reliable level. However, the existing discharge device also has some problems. For example, it can only withstand the electromagnetic interference with relatively small amplitude, and can not solve the interference of strong energy such as direct lightning current and induced lightning current. Solid state descoupler can well solve the fault grounding short circuit current of high voltage line, the grounding current of the lightning arrester line at the top of high voltage line struck by lightning, and the stray current generated when the train passes through the railway. This product can protect the influence of over-voltage or over-current generated by the above conditions on the cathodic protection of pipelines, prevent the aggravation of corrosion of pipelines due to electromagnetic interference, and play an effective role in the protection of pipeline equipment.

  

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 2. Reference standards

  Iec 61643.1-2005 "Surge protectors connected to low voltage distribution systems - Part 1: Performance requirements and test methods"

  NACE RP0177 measures to Mitigate the Effects of ALTERNATING Current and Lightning on Metal Structures and Corrosion Control Systems

  Gb18802.1-2002 /IEC61643-1 "Surge protectors (SPD) for low-voltage distribution systems - Part 1: Performance requirements and test methods"

  GB/T19271.1 "Lightning electromagnetic pulse protection Part I: General Rules"

  GB50057 lightning Protection Design Code for Buildings

  GB50251 "Design Code for Gas Transmission Pipeline Engineering"

  GB50253 "Design Code for Oil Pipeline Engineering"

  GB4208 "Shell Protection Class (IP code)"

  SY/T0032-2000 "Technical Standard for AC discharge protection of buried Steel Pipelines"

  

  Performance parameters

  

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  Technical specifications

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installation instructions

  1. Connect one end of the product to the pipeline and the other end to the grounding network. The grounding resistance value of the grounding network should be controlled within 4 ohms.

  2, the product can be used explosion-proof box structure, directly installed in the explosion-proof environment.

  3, this product adopts sealed structure, can be installed in a wet place.

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