HV/MV Equipment
AC Disconnectors
(Disconnect Switches)

Grid Solutions > HV/MV Equipment > Disconnectors > AC Disconnectors > SX

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SX
Pantograph Disconnector up to 1,000 kV

The SX is a space saving double scissor aluminium disconnector connecting the lower busbar to the upper one via the pantograph arms. Horizontal rather than vertical separation means a space reduction of as much as 30%.


Customer Benefits
  • Reduced substation space requirements (up to 30%)
  • Clear conducting routing for safety
  • Rigid or flex busbars for flexibility
  • Double scissor design for high rigidity
  • Built-in ground switches available
  • Virtually maintenance free
  • Easy start-up and commissioning
Main Characteristics
Specifications
Drawings
  • Rugged performance in adverse conditions including high winds and heavy ice, stable in closed potion during short circuits
  • Blades are extra heavy, one piece, tubular aluminium with replaceable silver plated copper contacts
  • Galvanized structural steel channel base supports the insulators and live parts, providing high strength and rigid design
  • All bearings and counter-balancing springs are isolated from the main path
  • Vertical separation design offers space reduction as much as 30%
  • Clear busbar arrangement and routing results in increased safety during operation and maintenance
  • Flexible installation and arrangement configurations

Specifications

Technical Data (IEC)

Rated Voltage Rated Current A/ Short time current kA Up to BIL kV A mm B mm C mm D mm Ø mm
72.5 kV 4000/63 325 980 2000 1400 340 22
100 kV 4000/63 450 1230 2200 1500 340 22
123 kV 3150/50 550 1480 2500 1600 340 22
145 kV 4000/63 650 1710 3000 2000 340 22
170 kV 4000/63 750 1910 3000 2000 340 22
245 kV 4000/80 1050 2510 3650 2650 340 26
300 kV 4000/80 1050 2810 3650 2650 340 26
362 kV 4000/80 1175 3100 4400 3100 400 26
420 kV 4000/80 1425 3550 5450 4100 400 26
550 kV 4000/80 1550 4200 5800 4300 400 26

Drawings

SX drawing