What radius of protection does the DDCE have?

The radius of coverage of the DDCE 100 is 100 m, according to the ROLLING SPHERE method of point A4 of UNE-EN-IEC 62305 (PART I)

What regulations does it meet?
  • UNE-EN (IEC) 62305: 2012 lightning protection: Parts 1 (General principles), 2 (Risk assessment) and 3 (Physical damage to structures and life hazard)
  • CTE (TECHNICAL BUILDING CODE) SU8, Safety from hazards due to lightning)
  • NFPA 780:2011
  • NBR 5419:2005
  • NTC 4552:2008
  • SANS 10313:2012
  • IRAM 2184 2011
  • CAN/CSA – B72 – M87 (R2013)
  • AS/NZS 1768: 2007
What type of installation needs to be carried out?

The DDCE installation is the same as sized for a conventional lightning protection system complying with current regulations.

Can the building earthing be connected to the DDCE?

Yes, and we strongly recommend the equipotential bonding of the various earths in the system to prevent potential differences between earths, as required by current regulations. The maximum permitted resistance of the earthing is 10 ohms.

How can we protect ourselves from the direct and indirect effects?

The DDCE is designed to prevent the formation of ascending streamers from the lightning, although in the remote event of a strike, it would act as a fuse. Moreover, it is complementary to existing protections as indicated by the RBT (ITC-BT-23) standards, EN 61643-11 element: 2012 and IEC 62305-4 overvoltage protection standards. It also minimises the effects of electromagnetic pulses on installations.

What would happen in the event of a lightning strike?

In the remote event of it happening, since the DDCE would be in saturation phase, this would compensate the electric field in microseconds just like a conventional system, acting as an internal fuse, able to absorb currents up to 200 kA, as certified in testing for compliance with UNE-EN-IEC 62305 carried out at LCOE (Electrical Engineering Laboratory of the Ministry of Industry).