Planning with SIVACON 8 PS - Siemens

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Planning with LXA/LXC5.2 System components5.2.11 Tap-off unitsCharacteristics of tap-off unitsFor a comprehensive power distribution structure, tap-off units are available in four sizes:● For 80 to 250 A● For 400 A● For 630 A● For 800 to 1250 AThe rated operating voltage (Ue) is 400 V. Regardless of mounting position, the enclosureensures IP54 degree of protection (IP55 can be achieved with the appropriate accessories).All units are fitted with either a fuse switch disconnector or circuit-breaker with handle as wellas bolts for the cable connection. For conductor systems (conductor configurationsaccording to type LX...6.) with insulated PE conductor, the tap-off units are supplied with theaddition of a separate PE connection.Cable entryCable entry can be from the side or front (exception: for tap-off units up to 250 A from thefront only). Integrated flange with cable sleeves facilitates multi-core cable entry. Aluminiumplates are used for single-core cable entry; these have to be fitted with cable glands locally.Safety during operationThe tap-off units cannot be opened unless the protective device is switched off manually.Once this is done, the cable connection area is no longer energized. The part of the contactdevice in the front of the tap-off unit is "finger-proof".Implementing the tap-offsTap-offs are required for different amperages depending on the sizeand type of consumersinvolved. These are implemented by means of plug-in tap-off units from 80 to 630 A orbolt-on tap-off unitsfrom 800 to 1250 A.Planning with SIVACON 8 PS162 Planning Manual, 10/2007, A5E01541101-01
Planning with LXA/LXC5.2 System components5.2.11.1 Plug-in tap-off unitsTap-off units from 80 to 630 A● There are basically two different assembly variants: fuse switch disconnectors orcircuit-breakers● Plug-in tap-off units can be fitted/removed easily● Power tap-off via tap-off point● Anti-rotation feature prevents incorrect mounting.● IP20 touch protection whilst the unit is being connected to the tap-off pointFigure 5-5Plug-in tap-off unitNoteHot pluggingCountry-specific regulations may prohibit plugging when the busbar run is not switchedoff and energized with electrical power.Planning with SIVACON 8 PSPlanning Manual, 10/2007, A5E01541101-01 163
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Planning Manual · 10/2007Planning
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Safety GuidelinesThis manual contai
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Table of contents3.3 Technical data
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Table of contents6 Planning with LR
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Table of contentsPlanning with SIVA
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System overview1.1 Overview of Siem
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System overview1.1 Overview of Siem
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System overview1.2 CD-K systemConne
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System overview1.3 BD01 systemConne
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System overview1.4 Networked busbar
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Planning principles2.2 Busbar trunk
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Planning principles2.3 Rated curren
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Planning principles2.4 System selec
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Planning principles2.4 System selec
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Planning with BD2A/BD2C3.2 System c
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Planning with BD2A/BD2C3.3 Technica
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Planning with BD2A/BD2C3.4 Conducto
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Planning with BD2A/BD2C3.4 Conducto
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Planning with BD2A/BD2C3.5 Dimensio
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Planning with LDA/LDC 44.1 System d
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Planning with LRC6.2 System compone
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Planning with LRC6.3 Technical data
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Planning with LRC6.4 Dimension draw
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Further information about planning
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Further information about planning7
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GlossaryAThe manufacturers of low-v
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GlossaryRated ultimate short-circui
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IndexAAdditional equipment, 59, 126
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IndexSelection of systems, 31Select
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Siemens AGAutomation and DrivesLow-
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Planning with SIVACON 8 PS - Siemens

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