Product Description XI/ON - Eaton Automation
Product Description XI/ON - Eaton Automation
Product Description XI/ON - Eaton Automation
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<strong>XI</strong>/<strong>ON</strong>: Gateways for Modbus TCP 8 Guidelines for Electrical Installation<br />
8.3.2 Grounding of Inactive Metal Components<br />
All inactive metal components (for example: switchgear cabinets,<br />
switchgear cabinet doors, supporting bars, mounting plates, tophat<br />
rails, etc.) must be connected to one another over a large surface<br />
area and with a low impedance (grounding). This guarantees a standardized<br />
reference potential area for all control elements and<br />
reduces the influence of coupled disturbances.<br />
8.3.3 PE Connection<br />
In the areas of screw connections, the painted, anodized or<br />
isolated metal components must be freed of the isolating layer.<br />
Protect the points of contact against rust.<br />
Connect all free moving groundable components (cabinet doors,<br />
separate mounting plates, etc.) by using short bonding straps to<br />
large surface areas.<br />
Avoid the use of aluminum components, as its quick oxidizing<br />
properties make it unsuitable for grounding.<br />
Warning<br />
The grounding must never – including cases of error – take on a dangerous<br />
touch potential. For this reason, always protect the ground<br />
potential with a protective cable.<br />
A central connection must be established between ground and PE<br />
connection (protective earth).<br />
8.3.4 Earth-Free Operation<br />
Observe all relevant safety regulations when operating an earthfree<br />
system.<br />
168 M001973-01, 07/2007
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