Forms of power supply net TN, IT, TT

Technical System Catalogue Ri4Power

Ri4Power Forms of power supply net TN, IT, TT The Ri4Power system is suitable for different network con- figurations. The different designs of the PE conductor system and the system assembly allow various network configura- tions to be realised. Designation Circuitry TN-S system (TN-S network) L1 L2 L3 PE N P1 P2 TN-C system (TN-C network) L1 L2 L3 PEN P TN-C-S system (TN-C-S network) L1 L2 L3 PE PEN N P1 P2 TN system (TN network) L1 with residual-current circuit-breaker L2 (FI circuit-breaker RCD) L3 PEN I ΔN > RCD IT system (IT network) L1 L2 L3 z < P TT system (TT network) L1 L2 L3 N P Source: Tabellenbuch Elektrotechnik Rittal Technical System Catalogue/Power distribution 2 - 42

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• Ri4Power Form 1-4
• Modular system
• Busbar systems up to 5500 A
• Modular enclosure system
• Simple planning
• Ri4Power Form 1-4 – Universal design at its best
• Circuit-breaker section
• Coupling section
• Outgoing section
• Cable chamber
• Fuse-switch disconnector section
• Circuit-breaker section
• Terminal space
• Circuit-breaker
• Busbar system
• System example of a circuit-breaker section
• Overview of components
• Rittal Power Engineering
• Bill of materials
• Coupling section
• Coupling switch
• Busbar riser
• Busbar configuration
• System example of a coupling section
• Overview of components
• Rittal Power Engineering
• Bill of materials
• Outgoing section
• Distribution busbars
• Compartments with power outlet
• Compartments with control units
• System example of an outgoing section
• Overview of components
• Rittal Power Engineering
• Bill of materials
• Cable chamber
• TS 8 cable chamber enclosure
• PE and N distribution busbars
• PE/PEN, cable entry, base/plinth
• System example of a cable chamber
• Overview of components
• Rittal Power Engineering
• Bill of materials
• Fuse-switch disconnector section
• Busbar system
• Switchgear area
• Cable connection space
• System example of a fuse-switch disconnector section
• Overview of components
• Rittal Power Engineering
• Bill of materials
• List of contents – Planning instructions
• Tables
• Busbar system Maxi-PLS
• Beneficial system technology
• Four attachment levels
• Simple, practical connection
• Busbar system Flat-PLS
• Dimensioning in numerous variants
• Connection with no drilling required
• All-round contact hazard protection
• Busbar systems (100/185/150 mm)
• Busbar system 100 mm bar centre distance
• Busbar system 185 mm bar centre distance
• Busbar system 150 mm bar centre distance
• Connection system
• Connector kits
• Connection system
• Design certificate/type-tested
• Ri4Power
• Application
• Definitions and basic principles
• Rated voltage Un
• Rated operating voltage Ue
• Rated insulation voltage Ui
• Rated surge voltage resistance Uimp
• Rated current of switchgear assemblies InA
• Rated current of circuits Inc
• Rated diversity factor RDF
• Rated peak withstand current Ipk
• Rated short-time withstand current Icw
• Conditional rated short-circuit current Icc
• Rated frequency fn
• Pollution degree
• Material group
• Conditions of installation of assemblies
• Stationary/movable installation of the low-voltage switchgear
• Protection category
• Use by skilled persons or ordinary persons
• Classification according to electromagnetic compatibility (EMC)
• Special operating conditions
• External design
• Protection from mechanical impact
• Type of layout
• Forms of power supply net TN, IT, TT
• Selection and dimensioning of the main busbar system
• Parameters for selection of the mainbusbar system
• Rated peak withstand current Ipk and rated short-time withstand current Icw
• Installation instructions
• Design of the busbar systems with regard to infeed and rated current InA and rated short-time withstand current Icw
• Short-circuit current distribution with various infeed variants (disregarding impedance)
• Rated current of switchgear assemblies InA
• Rated current of the busbar system Inc
• Description of switchgear section types
• Air circuit-breaker sections
• Coupling switch section
• Modular outgoing feeder section
• Modular outgoing feeder section
• Fuse-switch disconnector section with vertical distribution busbar system for horizontally arranged NH slimline fuse- switch disconnectors and device modules
• Fuse-switch disconnector sectionwith Rittal NH slimline fuse-switchdisconnectors
• Cable chamber
• Corner section
• Distribution busbar section
• Busbar riser
• General remarks and recommendations
• Making busbar connections and connections to copper busbars
• Choice of internal connections
• Air circuit-breakers (ACB)
• Moulded-case circuit-breakers (MCCB)
• NH fuse-switch disconnectors
• Motor-starter combinations (MSC)
• General wiring
• Operation and maintenance
• Notes on the use of aluminium cables
• List of design verifications to be obtained
• Switchgear installation types
• Conductor cross-section in relation to short-circuit withstand capacity (unprotected active conductors)
• Cable routing or cable entry
• Neutral conductors – Requirements
• Notes on the positioning and design of N, PE and PEN conductors
• Dimensioning of the PE with the aid ofcalculation I2txsec. Appendix B (normative)
• Transport units and weights
• Accidental arcing protection for human safety
• System overview of the standard main busbar routing in Form (1) 2-4
• Short-circuit rating diagram for busbar supports RiLine60, Flat-PLS 60/100 and Maxi-PLS 3200
• Admissible heat losses within compartments
• Busbar temperature increase and heat loss
• Explanation of TSK versus design verification
• The central earth point (CEP) in TN-S supply net
• PE conductor connection and current carrying capacity of PE conductor connections within a Ri4Power switchgear
• Internal separation of switchgear enclosures
• Fuse designations, operating categories
• Connection of busbars to DIN 43 673
• Protection categories IP
• Project checklist for Rittal Ri4Power low-voltage switchgearand controlgear assemblies
• Rated currents Inc ACB (air circuit-breakers)
• Rated currents Inc for moulded-case circuit-breakers MCCB
• Busbar rated currents

Technical System Catalogue Ri4Power
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