Ri4Power - Application - Definitions and basic principles - Rated voltage Un - Rated operating voltage Ue

Technical System Catalogue Ri4Power

Ri4Power Application This planning handbook should be used to create low- The explanations in this handbook apply to the creation voltage switchgear and controlgear assemblies with the of low-voltage switchgear and controlgear assemblies Ri4Power modular system from Rittal, as the basis for that must meet the requirements of IEC/EN 61 439-1/-2. planning and configuration. Where necessary, the requirements of the predecessor standard IEC 60 439-1 are also met. Definitions and basic principles Before starting to plan a low-voltage switchgear, the follow- Standard ing parameters should be agreed with the subsequent user Other technical features IEC 61 439 see of the low-voltage switchgear: Clause page Pollution degree 7.1.3 39 Standard Rated data IEC 61 439 Material group Table 2 40see page Clause Conditions of installation of assemblies 7.1 40 Rated voltage Un 5.2.1 37 Stationary/movable installation 3.5.3 – 3.5.4 40 Rated operating voltage Ue 5.2.2 37 Protection category 8.2 40 Rated insulation voltage Ui 5.2.3 38 Use by skilled persons or ordinary persons 8.4.5 40 Rated surge voltage resistance Uimp 5.2.4 38 Classification according to electromagnetic 9.4 41 Rated current of switchgear assemblies InA 5.3.1 38 compatibility (EMC) Rated currents of circuits Inc 5.3.2 38 Special operating conditions 7 41 Rated diversity factor RDF 5.3.3 38 External design 3.3 41 Rated peak withstand current Ipk 5.3.4 39 Protection from mechanical impact 8.2.1 41 Rated short-time withstand current Icw 5.3.5 39 Type of layout 8.5 41 Conditional rated short-circuit current Icc 5.3.6 39 Rated frequency fn 5.4 39 A list of the maximum values of the Ri4Power systems in table form may be found on the Rittal website under “Technical details” for Catalogue 33, page 166. Rated voltage Un Standard reference chapter 5.2.1 to IEC 61 439-1 This is the highest rated a.c. voltage (root-mean-square The maximum possible rated value with the Ri4Power value) or d.c. voltage for which the main circuits of system is 690 V AC. the switchgear enclosure are designed pursuant to Dimensioning to a lower rated value is possible. In this IEC 61 439-1 section 3.8.9.1. connection, it is important to ensure that all operating equipment connected to the main circuit is suitable for this rated value. Rated operating voltage Ue Standard reference chapter 5.2.2 to IEC 61 439-1 If the rated voltage of an outgoing circuit deviates from the specified rated voltage Un, a separate rated operating voltage must be given for that circuit. This value must not exceed the maximum rated voltage of the Ri4Power system of 690 V AC. 2 - 37 Rittal Technical System Catalogue/Power distribution


Technical System Catalogue Ri4Power
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