The SI-2 compact, modular and safe Solid Insulated Switchgear can be provided with a load break switch or a vacuum circuit breaker up to 15 kV. This universal application which is fully compatible with the IEC standards, is safe, robust, functional and compact.

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Medium voltage switchgear, built to withstand severe conditions

Built to withstand severe conditions (new)

Our Arc-Killers extinguish an arc in 48 milleseconds

SGC nv SwitchGear Company’s patented SV-25 and SV-50 Arc-Killers takes safety to a new level. Not just the operator and the environment are shielded from harm, but the super-swift arc extinguishing system allows cubicles to be back in operation very quickly in case of an internal fault.

Our SI-2 line-up

SI-2 – Solid insulated switchgear with load break switch or circuit breaker

Technical specifications

Unit Circuit breaker Load break switch Fuse switch 3-position switch
Rated voltage kV rms 12/15 12/15 12/15 12/15
Rated frequency Hz 50/60 50/60 50/60 50/60
Rated Power Frequency Withstand Voltage
To-earth phases kV rms 42 42 42 42
Over insulation distance kV rms 48 48 48 48
Rated lighting impulse withstand voltage (peak)
To-earth phases kVp 95 95 95 95
Over insulation distance kV rms 110 110 110 110
Rated current A rms 20
Maximum number of operations at 100% lsc 50
Rating making capacity kAp 52 52
Rated short-time withstand current and duration kA rms
S
20
4
20
4
20
4
Peak withstand current kAp 52 52 52
Capacitive breaking capacity A rms 25 10
Rated breaking transfer current A rms 3150
PD on primary modular pC < 5 < 5 < 5 < 5
Rated operating sequence of circuit breaker O-0.3s-CO-15s-CO
No-load mechanical endurance > 10,000 > 10,000 > 10,000 > 10,000
IP code IP68
Altitude m < 5000
Operating temperature °C -25 to +55
Standards IEC 62271-201, IEC 62271-100, IEC 62271-102, IEC 62271-1, IEC 62271-105