SDD2-12-30 for DC and IT power systems
SDD2 DIN mount surge protector for DC and IT power system applications.
The new SDD2 provides the same excellent low let-through voltage with a width of 36mm.
The SDD2 design also eliminates earth leakage current by utilising a hybrid spark gap path to earth.
Visual indication is provided by a LED indicator to show circuit voltage and surge protection status and remote alarm terminals are provided for monitoring.
Designed for lightning intense environments
Based upon a tried and proven design with tens of thousands in
service throughout the world, the new SDD2 incorporates
the latest in redundant segment Metal Oxide Varistor technology
providing enhanced current handling capability and longer life.
HOW it works
The Novaris SDD2-12-30 unit works to protect sensitive electrical equipment by controlling the maximum voltage potential across the positive and Negative terminals of the switch board in a local area or the appliances, this unit protects against EMP voltages produced because of the lighting and also surges from the lighting.
as a example on a normal 24 volt system if the voltage rises to 34 volts then a short is placed across the wires to reduce the voltage and hold it at 30v and dumps this to the earth /ground system on the boat, once the voltage drops below 30v then the short is releases, This short can only be held for a few Nano seconds 8/20us with amperage’s upto 12,000 amps but its enough to protect the equipment in Most cases. after this hit the unit may have to be replaced but there is a fault display included.
This How it works is a basic overview of the devices operation, in Laymans terms that non electrical people will understand.
Please read the full spec sheet for details here https://octopusasia.com/sdd2-12-30-spec-sheet/