Ul508a supplement sb pdf merge

Test each panel construction and record the construction in a followup procedure. Formerly supplement sa of ul 508a 1 listed components 1. Get started for free sign up with facebook sign up with twitter i dont have a facebook or a twitter account. Sccr overall panel short circuit current rating klockner moeller. It is a weakestlinkinthechain evaluation, meaning that the lowest sccr circuit within the panel. Many manufacturers and users started combining a manual ul 508 type e. Supplement sb is the ul approved method for determining the sccr for industrial. Shortcircuit current rating markings are not required for industrial control panels containing only control circuit components. Industrial control panels, supplement sb, is an example of an approved method. Overview of ul508a supplement sb ul 508a is a safety standard for industrial control panels adopted by underwriters laboratory, which is an approved method in determining sccr referenced by nec article 409. Ul508a, supplement sb describes three steps to determine the sccr of. How to facilitate the ulcompliant approval to your control panel. Panduit industrial ethernet physical infrastructure.

Supplement sb, provides an analytical method to determine the shortcircuit current rating of an industrial control panel. Design of a motor circuit as per standard ul 508 part iv and ul 508a p. They are especially easy to integrate into distributed systems. Reference implementing automation systems that leverage network architectures in manufacturing networks pdf odva communications to deliver unprecedented efficiency, security. Determination of the short circuit current rating according to ul 508a supplement sb. All components in power circuit must have ratings ratings of starters are typically based on hp rating supplement sb, table sb4. With their modular design, our products can be planned and built into a control cabinet in a very simple way. With sirius, we offer you a unique comprehensive portfolio for every industrial control application. Ul 508a, supplement sb is an approved method to determine sccr for industrial control panels and industrial machinery control panels. Evaluate panel per ul508a, supplement b required by 406 if jurisdiction does not adopt 2005 nec earlier. Equipment intended to be connected to a source of supply greater. This method is based upon the weakest link approach. With the numerous possibilities for product combinations within a panel, this option will require a tremendous investment in testing and maintenance. Instruction sheets with sccr ratings ul tested combinations pdf.