Product Description XI/ON - Eaton Automation

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XI/ON: Gateways for Modbus TCP 8 Guidelines for Electrical Installation 8.3.2 Grounding of Inactive Metal Components All inactive metal components (for example: switchgear cabinets, switchgear cabinet doors, supporting bars, mounting plates, tophat rails, etc.) must be connected to one another over a large surface area and with a low impedance (grounding). This guarantees a standardized reference potential area for all control elements and reduces the influence of coupled disturbances. 8.3.3 PE Connection In the areas of screw connections, the painted, anodized or isolated metal components must 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 unsuitable for grounding. Warning The grounding must never – including cases of error – take on a dangerous touch potential. For this reason, always protect the ground potential with a protective cable. A central connection must be established between ground and PE connection (protective earth). 8.3.4 Earth-Free Operation Observe all relevant safety regulations when operating an earthfree system. 168 M001973-01, 07/2007
XI/ON: Gateways for Modbus TCP 8 Guidelines for Electrical Installation 8.3.5 Mounting Rails All mounting rails must be mounted onto the mounting plate with a low impedance, over a large surface area, and must be correctly earthed. Figure 73: Mounting options A TS 35 B Mounting rail C Mounting plate Mount the mounting rails over a large surface area and with a low impedance to the support system using screws or rivets. Remove the isolating layer from all painted, anodized or isolated metal components at the connection point. Protect the connection point against corrosion (for example with grease; caution: use only suitable grease). M001973-01, 07/2007 169
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Product Description XI/ON - Eaton Automation

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