Air Insulated Switchgear

Cubicle Types

Switch Disconnector cubicle with Fuse, type SDF

Fused switch disconnector cubicle type SDF, is primarily used for transformer protection voltage metering. The cubicle is equipped with a SF6-insulated, 3-position switch disconnector and with earthing switch. For fuse earthing, the integrated

earthing switch operates on the upstream side and separate earthing switch operates on the downstream side of the fuses.

The mechanism used is a double spring mechanism with automatic fuse-tripping. Access to cable compartment is possible in earthed-position.

“Open” and “earthed” positions are “visible” through inspection windows placed behind the low voltage compartment door. Inspection of cable connections

and fault indicators when used, is easily carried out through the front-door window.

Basic equipment

Top unit, including

  • 3-position switch disconnector
  • operating mechanism with mechanical position indication
  • enclosure of busbar compartment
  • integrated low voltage compartment
  • interlocking unit
  • fuse tripping with indication
  • busbars
  • earthing bar

Bottom unit, including

  • earthing switch type EF
  • fuse base
  • enclosure of cable compartment
  • cable entry with cable support

Cubicle Accessories

  • integrated voltage indicators or socket interface for portable indicators
  • auxiliary contacts for close (2NO+2NC) and earth (2NO+2NC) position
  • auxiliary contacts for fuse tripped, 1NO+1NC
  • gas density indication with alarm contact
  • emergency tripping
  • tripping coil
  • motor operation device
  • voltage transformers
  • arc-gas channel
  • channel for control cables
  • anti condensation heater
  • through-going earthing bar
  • apparatus earthing bar

Contact Us

Please call us for any inquiries :

T. +62-21-386 6228

F. +62-21-345 6879

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Postal and Mail Contact

Jl. Hayam Wuruk No. 4 E-G-I

Jakarta Pusat 10120