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Type 1 surge arrester / modular - DGV series
The DGV is a modular Type 1 AC Surge Protection Device (SPD) dedicated to protect sensitiveequipment against over voltage which may occur in the AC network during a storm (lightning) or during
switching electric power sources (industrial interferences).
The DGV is a one-pole SPD and can be used in common mode (DGV connected between L/PE and
N/PE = CT1 configuration) or common and differential mode (DGV connected between L/N and
1xDE 400 between N/PE = CT2 configuration).
Protection is based on specific heavy duty Gas tube and high energy varistor block which is able to
channel currents of up to 40 kA to earth without incurring damage. According to the latest issue of
IEC 62 305 and IEC 60 364 standards, it is compulsory to install those surge arresters on the incoming power supply if the building is fitted with external lightning protection system. Multiple stage protection can be achieved using DGV surge arresters at the network entrance combined with DGT or DGX surge arresters positioned as close as possible to sensitive equipments.