Eaton XN-GWBR Series User Manual

8 Guidelines for electrical installation8.3 Electromagnetic Compatibility (EMC)188 XI/ON: XNE-GWBR-2ETH-IP 09/2011 MN05002007Z-EN www.eaton.com8.3 Electromagnetic Compatibility (EMC)XI/ON products comply in full with the requirements pertaining to EMC regulations.Nevertheless, an EMC plan should be made before installation. Hereby, all potential electro-mechanical sources of interference should be considered such as galvanic, inductive andcapacitive couplings as well as radiation couplings.8.3.1 Ensuring Electromagnetic CompatibilityThe EMC of XI/ON modules is guaranteed when the following basic rules are adhered to:• Correct and large surface grounding of inactive metal components.• Correct shielding of cables and devices.• Proper cable routing – correct wiring.• Creation of a standard reference potential and grounding of all electrically operateddevices.• Special EMC measures for special applications.8.3.2 Grounding of inactive metal componentsAll inactive metal components (for example: switchgear cabinets, switchgear cabinet doors,supporting bars, mounting plates, tophat rails, etc.) must be connected to one another over alarge surface area and with a low impedance (grounding). This guarantees a standardizedreference potential area for all control elements and reduces the influence of coupled distur-bances.• In the areas of screw connections, the painted, anodized or isolated metal componentsmust be freed of the isolating layer. Protect the points of contact against rust.• Connect all free moving groundable components (cabinet doors, separate mounting plates,etc.) by using short bonding straps to large surface areas.• Avoid the use of aluminum components, as its quick oxidizing properties make it unsuitablefor grounding.8.3.3 PE connectionA central connection must be established between ground and PE connection (protectiveearth).8.3.4 Earth-free operationObserve all relevant safety regulations when operating an earthfree system.WarningThe grounding must never – including cases of error – take on a dangerous touchpotential. For this reason, always protect the ground potential with a protectivecable.