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Product overview

An overview of our disconnectors and earthing switches

Learn more about the range and technology of our high-voltage disconnectors and earthing switches. Our high-voltage disconnectors and earthing switches combine state-of-the-art technology with the highest quality standards for a voltage range from 36 kV to 800 kV.

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Most important features:

  • Voltage range from 36 kV to 800 kV
  • Rated current up to 5000 A (80 kA – 1 s)
  • Short-circuit currents are maximum values and maybe only valid for 1 s – needs to be verified for specific application
  • Durable materials for use in strong seismic activity
  • Suitable for indoor and outdoor use
  • Switching capacity requirements, such as the commutating currents, electromagnetic and/or electrostatic couplings (also with values above and beyond the IEC)

Advantages:

  • Maintenance-free contact system without spring elements
  • Outstanding price-performance ratio
  • Operational under all severe climatic conditions, including in coastal regions and areas with dramatic temperature differences, high risk of ice formation or strong seismic activity
  • Type-tested according to IEC 62271-102
  • Quality control system certified according to DIN EN ISO 9001
  • Delivery of completely routine-tested and pre-adjusted assemblies simplifies setup and commissioning
  • Life-time technical support and service on short notice

Our disconnectors and earthing switches

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The center break is the most frequently used disconnector type worldwide. Its design is characterized by two rotating insulators that open and close the contacts in a sideways motion.
 

Most important features and advantages:

  • Design with two rotating insulators mounted on an integrated base frame
  • The current path opening to the side creates a bigger phase distance in parallel arrangements than with other disconnector types
  • Convenient design allows for versatile and customized applications, e.g. in parallel, diagonal or in-line arrangements
  • Integrated base frame can be easily and flexibly adapted to the supporting structure
  • Available in various colors
  • Sophisticated contact system ensures long service life and requires no maintenance effort
  • Extended RIV limits for each voltage level reduce magnetic interference for increased efficiency and reliability
  • Tested according to national and international standards, such as IEC, ANSI, GOST R and GB
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Double side break disconnectors are primarily used in substations with limited phase space and where a vertical opening of the current path is not possible. The current path makes a horizontal rotating movement.

 

Main features and advantages:

  • Has three supporting insulators
  • The center insulator can rotate and carries the current path
  • Outer supporting insulators carry the fixed contacts
  • Two open separation sections
  • Compact and stable design allows for high mechanical tensile loads
  • Combination with surge arresters possible
  • Available with self-interlocking mechanism and in various colors
  • Sophisticated contact system ensures long service life and requires no maintenance effort
  • Extended RIV limits for each voltage level reduce magnetic interference for increased efficiency and reliability
  • Tested according to national and international standards, such as IEC, ANSI, GOST R and GB
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Pantographs require the smallest possible mounting space and are connected to the busbar with its characteristic scissors.

 

Main features and advantages:

  • Vertical disconnection
  • Busbar connection
  • Diagonal or parallel arrangement
  • Applicable for flexible and rigid busbar connections
  • Compact and stable design allows for high mechanical and thermal loads
  • Self-interlocking mechanism prevents opening during a short circuit
  • Sophisticated contact system ensures long service life and requires no maintenance effort
  • Tested according to national and international standards, such as IEC, ANSI, GOST R and GB
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The current path of the vertical break disconnector opens in the vertical direction, making small phase distances possible. Vertical break disconnectors carry out two movements: a vertical swinging movement, and a rotary movement around its own longitudinal axis.

 

Main features and advantages:

  • The great distance between the supporting and rotating insulators ensures the dielectric strength of the parallel insulation, even in saline fog conditions
  • Delivered in finished assemblies, reducing the time required for installation and commissioning
  • Available with self-interlocking mechanism and in various colors
  • Tested according to national and international standards, such as IEC, ANSI, GOST R and GB