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Voltage Limiting Device
Description

A voltage limiting device must be used as a short-circuit device in order to limit the voltage between the return circuit and the structure earth, preventing dangerous touch voltages.

Our negative earth protection device (VGuard) is compliant with both EN 50526-2 and EN 50122-1 standards. The protection scheme is proven as it is based on the same in-house components used in Sécheron DC Switchgears.

VGuard is designed for networks up to 3600 VDC.

The VGuard-B is using a normally closed earthing switch with making capacity. The VGuard-H is based on a hybrid switch consisting of anti-parallel thyristors and the earthing switch connected in parallel.

Principle diagrams
Brochures area
Voltage Limiting Device
VGuard
VGuard