Siemens UL 508A Manuale di riferimento - Pagina 3
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Stampa la paginaShort-circuit current rating (SCCR) of
industrial control panels
NEC Article 409 and UL 508A
Short-circuit current rating (SCCR)
of industrial control panels
Reference Manual
06/2013
A5E31896849002A/RS-AA/001
Introduction
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Overview of NEC Article 409
Overview of Supplement SB
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from the UL 508A standard
Basic steps for calculating
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the SCCR of a control panel
Flow chart for calculating the
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SCCR of a component
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