List of contents – Planning instructions

Technical System Catalogue Ri4Power

List of contents – Planning instructions Application ...................................................................... 37 General remarks and recommendations.......................59 Definitions and basic principles.................................... 37 Making busbar connections and connections to Rated voltage Un............................................................... 37 copper busbars.................................................................59 Rated operating voltage Ue .............................................. 37 Choice of internal connections..........................................59 Rated insulation voltage Ui ............................................... 38 Air circuit-breakers (ACB) .................................................59 Rated surge voltage resistance Uimp ................................ 38 Moulded-case circuit-breakers (MCCB) ...........................59 Rated current of switchgear assemblies InA ..................... 38 NH fuse-switch disconnectors ..........................................60 Rated current of circuits Inc............................................... 38 Motor-starter combinations (MSC) ....................................60 Rated diversity factor RDF................................................ 38 General wiring ...................................................................60 Rated peak withstand current Ipk ...................................... 39 Operation and maintenance..............................................61 Rated short-time withstand current Icw ............................. 39 Notes on the use of aluminium cables ..............................61 Conditional rated short-circuit current Icc ......................... 39 List of design verifications to be obtained ........................61 Rated frequency fn ............................................................ 39 Switchgear installation types.............................................62 Pollution degree................................................................ 39 Conductor cross-section in relation to short-circuit withstand capacity (unprotected active conductors)........62 Material group................................................................... 40 Cable routing or cable entry..............................................62 Conditions of installation of assemblies............................ 40 Neutral conductors – Requirements..................................63 Stationary/movable installation of the low-voltage switchgear........................................... 40 Notes on the positioning and design of N, PE and PEN conductors....................................................64 Protection category........................................................... 40 Dimensioning of the PE with the aid of Use by skilled persons or ordinary persons ..................... 40 calculation I2txsec. Appendix B (normative).....................65 Classification according to electromagnetic Transport units and weights..............................................66 compatibility (EMC)........................................................... 41 Accidental arcing protection for human safety .................67 Special operating conditions............................................ 41 System overview of the standard main busbar routing External design................................................................. 41 in Form (1) 2-4...................................................................68 Protection from mechanical impact.................................. 41 Short-circuit rating diagram for busbar supports Type of layout ................................................................... 41 RiLine60, Flat-PLS 60/100 and Maxi-PLS 3200.................69 Forms of power supply net TN, IT, TT............................... 42 Admissible heat losses within compartments ...................70 Selection and dimensioning Busbar temperature increase and heat loss.....................70 of the main busbar system............................................. 43 Explanation of TSK versus design verification ..................70 Parameters for selection of the main busbar system........ 43 The central earth point (CEP) in TN-S supply net .............71 Rated peak withstand current Ipk and PE conductor connection and current carrying rated short-time withstand current Icw............................... 43 capacity of PE conductor connections within Installation instructions ..................................................... 44 a Ri4Power switchgear......................................................71 Design of the busbar systems with regard to infeed Internal separation of switchgear enclosures ...................72 and rated current InA and rated short-circuit withstand Fuse designations, operating categories..........................73 capability Icw ..................................................................... 44 Connection of busbars to DIN 43 673...............................74 Short-circuit current distribution with various infeed variants (disregarding impedance) .................................. 45 Protection categories IP ....................................................74 Rated current of switchgear assemblies InA ..................... 45 Project checklist for Rittal Ri4Power low-voltage switchgear and controlgear assemblies .......................75 Description of switchgear section types ...................... 49 nc ACB (air circuit-breakers) ................77Rated currents Inc............................. 46Rated current of the busbar system I Air circuit-breaker sections............................................... 49 circuit-breakers MCCB....................................................80nc for moulded-caseRated current I Coupling switch section.................................................... 50 Rated busbar currents ....................................................88 Modular outgoing feeder section ..................................... 51 Fuse-switch disconnector section with vertical distribution busbar system for horizontally arranged NH slimline fuse-switch disconnectors and device modules.................................. 53 Fuse-switch disconnector section with Rittal NH slimline fuse-switch disconnectors.................... 54 Cable chamber................................................................. 55 Corner section .................................................................. 56 Distribution busbar section............................................... 57 Busbar riser ...................................................................... 58 2 - 27 Rittal Technical System Catalogue/Power distribution


Technical System Catalogue Ri4Power
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