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Gas-insulated surge arrester AZ

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Surge arrester for gas-insulated switchgear for system voltage up to 550 kV

The surge arresters are constructed from a stack of serially connected - extremely non-linear metal-oxide (MO) resistors in a metallic enclosure under pressurized SF6-gas. The high-field MO resistors of ABB surge arresters are manufactured by ABB.

The surge arrester is designed and type-tested according to IEC 62271-203 and IEC 60099-4.

Surge arresters are used to protect the insulation of gas-insulated switchgear, and connected cables, transformers etc. against all kind of transient atmospheric and switching overvoltages.

 

Brief performance data

    AZ
System voltage  kV  up to 550 kV
Continuous voltage kV up to 374 kV
Line discharge class Class 3-5

 

Why ABB?

  • Over 75 years of experience in overvoltage protection 
  • Local and global ABB application support 
  • Proven safe short-circuit design
  • Design life of more than 30 years
  • Own production of metal-oxide (MO) resistors with long-term stable characteristics
  • Compact design
  • Low residual voltages
  • Very good protection performance
  • High energy absorption capacity

Specificatii Tehnice

Disponibilitate N/A
Livrare N/A
Fisa tehnica N/A

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