VBMC Metal Clad Switchgear

VBMC Metal Clad Switchgear

VBMC Air-Insulated, Metal Compartmented, Trolley-Mounted Modular Metal Clad Switchgear bring a new dimension to medium voltage distribution systems with their high-performance and type-tested structures. With Siemens Sion series circuit breakers, they ensure network continuity, personnel, and equipment safety while providing high protection against moisture and dust. Our Metal Clad Switchgear offer long-term high-performance guarantees through the collaboration between Siemens and Voltberg.

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Technical Specifications VBMC 12 VBMC 24 VBMC 36
Rated voltage (rms) kV 12 24 36
Power frequency withstand voltage 50 Hz,
1 mi (rms) between phases and phase ground		 kV 32 50 70
Lightning impulse withstand voltage 1.2/50 ms
(peak) between phases and phase – ground		 kV 75/85 125 170
Rated frequency Hz 50-60
Rated (rms) current Busbars A 630 .. 3150 630 .. 3150 630 .. 2500
(with forced ventilation) A 4000 – –
CB & Disconnector A 630 .. 3150 630 .. 3150 630 .. 2500
(with forced ventilation) A 4000 – –
Load Break Switch A 630 .. 1250 630 .. 1250 630 .. 1250
Vacuum Contactor A 400 800 –
(for capacitive load) A 250 200 –
Rated short time withstand (rms) current CB & Disconnector kA 16 .. 40 16 .. 31.5 16 .. 31.5
Load Break Switch kA 16 .. 20 16 .. 20 16 .. 20
Vacuum Contactor kA 8 8 –
Short circuit withstand time s 3 3 3
Rated short time withstand (peak) current CB & Disconnector kA 40 .. 100 40 .. 100 40 .. 80
Load Break Switch kA 40 .. 50 40 .. 50 40 .. 50
Vacuum Contactor kA 20 20 –
Internal arc fault Current kA 40 31,5 31,5
Duration s 1 1 1
Earthing switch Rated short time withstand current kA 16 .. 40 16 .. 31.5 16 .. 31.5
Short circuit withstand time s 3 3 3