Use shielding with high absorptive and reflective capacity in the far and near field (copper or aluminum). (Shielding)Basic principles of shielding Do you need help with the professional shielding of your systems? We will be happy to assist you with the planning and selection of the right components. How is electromagnetic field interference created? A consumer (Z) is supplied by a voltage source (U) via cables. Grounding systems aren't just boxes and wires – they're the silent bodyguards protecting people and equipment from electrical disasters. When lightning strikes or a rogue voltage surge decides to crash the party, proper grounding steps in like a seasoned bouncer, redirecting danger away from. But insulation is transparent to electromagnetic energy and offers no protection. Shielding is needed to combat the effects of EMI. We manufacture in our own mechanical milling centre and in our own electronic production, individual shielding boxes in different sizes, with special interfaces. This publication gives you general guidelines for installing an Allen-Bradley industrial automation system that may include programmable controllers, industrial computers, operator-interface terminals, display devices, and communication networks.