Ri4Power The central earth point (CEP) No other connections should exist between the PEN and the in TN-S supply net N, and also no connection between the NE and P conductor in the entire downstream wiring. The CEP should be clearly The CEP should be generated in the main low-voltage labelled. We recommend voltage and current monitoring in distribution. The connection should be a solid copper bar the CEP connection for this network configuration. with the minimum cross-section of the PEN/N conductor. If possible, the connection should be made in the centre of the main low-voltage distribution. PE conductor connection and current carrying capacity of PE conductor connections within a Ri4Power switchgear For covers, doors, trim panels etc. with no electrical operat- ing equipment attached, the usual metal screw connections and hinges are considered adequate for continuous connec- tion as potential equalisation. This applies to all specified connections on the TS system enclosure. If other operating equipment is connected to these parts or if there is a risk of a potential transfer to these parts, a PE conductor must be carefully connected, whose cross-section should be based on the largest cross-section of the supply cable to the corre- sponding operating equipment. Generally speaking, the manufacturer of the switchgear enclosure must ensure that the PE conductor circuit is capable of withstanding the highest thermal and dynamic loads occurring at the installation site. In principle, all PE conductors should be dimensioned using the calculation I2txsec. See also page 65 for further details. For constructional PE conductor connections, further infor- mation can also be found in the technical documentation on “PE conductor connection, current carrying capacity”, see www.rittal.com. 2 - 71 Rittal Technical System Catalogue/Power distribution
Technical System Catalogue Ri4Power
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