Lightning Protection Products
Germany OBO surge arresters_Parex spark gap 480 481
Product No：Pro2009416215530
Product Model：480 481
UpdateTime：
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Details：
Spark gaps 480 and 481 are installed with attaching straps or connectors between the system parts to be bridged.
When installing, cable lengths should be kept as short as possible, as long cables increase the risk of insulation being subjected to unnecessary demands through inductive voltages.
480...: Explosion-proof, closed spark gap.
• Ex-proofed according to ATEX Directive 94/9/EC
• Designation: Ex II 2G EEx d IIC T6
• Including attaching cable 25 mm² Cu, highly-flexible with cable lug, screw (M 10)
• Pulsed current 100 kA (10/350μs)
• BET-tested
Application: indirect bridging of insulating flanges and insulating threaded joints.
481...: Closed, lightning current carrying spark gap for separation of electrically conductive plant
components.
• Connecting bolt; Ø 10 mm; stainless steel
• Pulsed current 50 kA (10/350)
• BET-tested
Application: setting-up galvanic separations for outer lightning protection and earthing systems,
e.g. two earthing systems due to reciprocal influence or corrosion (preventing corrosion currents).
Details：
480.pdf 