Specifications

36
RF SOLUTION-CITEL
●
Choosing the SPD technology
DS surge protectors are based on Varistor (MOV) technology.
Some versions use different electrical diagrams :
-
<< VG >> technology : this Gas tube-Varistor hybrib association,
used in Type 1 SPD (DS150VG, DS250VG, DUT250VG),
improves the protection level Up and the residual voltage Ures.
- Association with RFI filter : The Surge protection panel CBB
and secondary SPD DS-HF combine surge protection stage
and filter stage in order to improve the protection level.
●
Coordination of Surge Protectors
In order to bring maximum protection efficiency, it could be
necessary to create a
<< coordination >> diagram, that means
installation of a
<< primary >> SPD at the network entrance and a
<< secondary >> close to sensitive equipment.
This association is required in the 2 following cases :
- High sensitivity equipment :
󳃨 Improvement of protection level.
-
Long distance (greater than 30m) of wire between equipment
to be protected and primary SPD :
󳃨 Reduction of ringing voltages created during the surge
transmission.
Efficient SPD coordination is performed by including
between primary and secondary SPDs :
- a minimum length of wire (> 10 m).
or
- a coordination inductor (DSH range).