Ri4Power The rated diversity factors should be determined according The admissible rated operating current Inc1 of an NH slimline to the number of outgoing feeders used (in accordance with fuse-switch disconnector is calculated from the product of Inc IEC 61 439-2, Table 101). from Table 7 on page 54, RDF1 from Table 8 and RDF2 from Table 9. Table 8: Rated diversity factor RDF1 for NH slimline fuse-switch disconnectors depending on the number per section Inc1 = Inc RDF1 RDF2 No. of NH slimline fuse-switch disconnectors 1Rated diversity factor RDF 2 and 3 0.9 The enclosure depth and enclosure height are irrelevant for 4 and 5 0.8 the diversity of the outgoing units from the section, and the 6 to 9 0.7 section dimensions may therefore be selected independ- ently of the diversity. 10 or more 0.6 Fuse-switch disconnector sections with horizontal busbar In addition to the quantity-dependent rated load factor, system in the centre-rear section from the Ri4Power modular a second rated diversity factor must be taken into account system, consisting of TS 8 enclosures and other required depending on the protection category. system accessories. fuse-switch disconnectors depending on the enclosure rear section. The neutral conductor should always be2 for NH slimlineThe main busbar system may only be installed in the centreTable 9: Rated diversity factor RDF positioned offset from the main busbar system in the lower protection category or upper enclosure section. Enclosure protection category Rated diversity factor RDF2 The detailed configuration of the fuse-switch disconnector IP 2X with forced ventilation 1.0 sections with horizontal busbar system in the centre rear IP 2X 0.95 section may be found in the valid Ri4Power assembly IP 43 0.8 instructions. IP 54 with forced ventilation 1.0 IP 54 0.8 Cable chamber The cable chamber is designed for the cable management of outgoing feeder sections. Bayed to the side of the modular enclosure, it is used to route the cables and also for insertion into the individual compartments. The cable chamber may also be used independently of the modular enclosure inside Ri4Power systems for general cable management. For compliance with Form 4b, the use of Form 4b connec- tion spaces is mandatory. Form 4b connection spaces are fitted onto the side panel modules of the compartments of modular outgoing feeder sections. For this reason, when planning a combination of a modular outgoing feeder sec- tion and a cable chamber, it is expedient to consider them as one transport unit. For inner compartmentalisation with Form 2b, 3b, 4a and 4b, the main busbar system routed through the cable chamber should be separated by covers. Depending on the configura- tion of the entire system, the main busbar system of the cable chamber may be routed in the top or bottom of the roof sec- If an enclosure variant with forced ventilation is chosen, with tion, base section or rear section. a cable chamber bayed to the side of a modular enclosure, a vented roof plate must not be used, because otherwise, The optional selection of a roof plate for cable gland plates additionally allows cables to be fed in from above. However, ventilation of the modular enclosure compartment cannot be achieved. this option is not admissible when configuring the main bus- bar system in the roof section. The detailed configuration of the cable chambers can be found in the valid Ri4Power assembly instructions. 2 - 55 Rittal Technical System Catalogue/Power distribution
Technical System Catalogue Ri4Power
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