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