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SIMOSEC Fusible Interrupter Switchgear

SIMOSEC ANSI switchgear is a factory-assembled, type tested, three-phase, metal enclosed,indoor switchgear according to ANSI/IEEE C37.20.3 for single busbars.

Technical features
• Air-insulated indoor switchgear
• Gas-insulated, maintenancefree switching functions for the two/three-position switch
• Three-pole primary enclosure
• Phases arranged one behind the other
• No cross-insulation between phases
• Busbar system at the top or bottom, as required by application
• Air-insulated busbar and cable connection system
• Two/three-position switch, metal-enclosed, with airinsulated primary terminals and gas-insulated switching functions
• Hermetically-sealed (welded) stainless-steel switchgear vessel,
– For switching devices
– With welded-in bushings (for electrical connections and mechanical components)
– With insulating gas SF6
• Metal-enclosed design
• Pressure relief
– To the rear and upwards
– Separately for each compartment
• Air-insulated cable connection system for conventional cable lugs
• Three-phase current transformer, factory-assembled on the feeder bushings
• Integrated low-voltage niche (standard) for installation of low-voltage devices
– E.g. terminals, pushbuttons
– MCBs
• Option: Space heaters for severe ambient conditions, e.g. condensation

Personal safety
• All switching operations can be performed with closed panel front
• Metal-enclosed switchgear
• HV CL fuses and cable terminations are only accessible when the outgoing feeders are grounded
• Logical mechanical interlocking
• Capacitive voltage detection system for verification of safe isolation from supply
• Grounding of outgoing feeders by means of make-proof grounding switches

Electrical features
• Rated voltages up to 27.6 kV
• Rated short-circuit current (fused) up to 63 kA at 15 kV and below, and 20 kA at 27.6 kV
• Rated short-time withstand current up to 20 kA, 2 second or 25 kA, 2 seconds