Air-Insulated Switchgear (AIS) NXAIR for rated voltages of 35 kV, up to 3150A

Air-Insulated Medium-Voltage Switchgear NXAIR S family represents factory-assembled, metal-enclosed, type-tested curcuit-breaker switchgear in withdrawable design, used for indoor installation mainly at the primary distribution level of power supply companies and industries, such as:

  • Power generation and emergency power supply installations
  • Cement industry
  • Metallurgy and rolling mills
  • Mining industry and processing
  • Petroleum industry and offshore installations
  • Diesel power plants

Customer benefit features

  • As insulating medium, air is always available
  • Use of standardized block-type current transformers
  • No handling of insulating gas and low and high pressure monitoring required
  • Use of maintenance-free vacuum circuit-breakers or contactors
  • Pressure-resistant partitions
  • All operations with closed high-voltage door
  • Metallic enclosure, earthed shutters and partitions
  • Internal arc classified switchgear according to IAC A FLR; front, lateral and rear accessibility; for all short-circuit currents and an arc duration of 1 s
  • Safe-to-touch and hermetically sealed primary enclosure, live parts are accomodated in an insulated and earthed metal housing
  • Positively driven shutters (separately lockable)
  • Logical mechanical interlocking system.