Explore our press releases and news updates. (Formerly Supplement SA of UL 508A) 1 Listed Components 1.1 Where a Listed device is provided in an industrial control panel and specific . 10 kA: Short-circuit-based configuration of the industrial control panel shall be performed by the manufacturer. Product Standards - What is UL 508A Supplement SB? There are three distinct steps to establishing the rating: 1) Establish the short circuit current rating of individual power . As the recognized method for SSCR determination of a control panel, the NEC references UL 508A Supplement SB. in UL 508A, Supplement SB, therefore provides an equivalent, approved and economic alternative. Values was expanded for the available fault current at the point of installation at the individual power SCCR with current 508A standard are specified in Table SB 4.1 of Supplement SB as an approved method for determining an short Fulfill furthermore the UL 508A is still limited to 600V or less should not be confused an example of control! In this video Dirk Meyer describes the determination of the panel overall short circuit current ratings (SCCR) according to UL 508A Supplement SB Machine builders that work with the USA should have their products UL -certified. Taking these values and the time needed to completely understand the . Industrial control panels are defined by the NEC section 409.2 as an assembly of two or more power circuit components, control circuit components, or any combination of power and control circuit components. However, when current-limiting overcurrent devices are used, only the component SCCR can be increased. When it comes to control panels, UL 508A Supplement SB establishes an approved method that defines how equipment SCCR is determined. During the design stage, the design engineer should estimate the available fault current and communicate the required SCCR to the OEM. UL 508A provides , Tech Topics will explain how UL 508A Supplement SB is used to determine panel SCCR and how the use of , training session on UL 508A , studied the standard in detail, and have firsthand field experience. Compliance with the High Fault SCCR may be . However, previous versions of the document may be used until UL Solutions provides notification that they are no longer in use. Due to a planned power outage on Friday, 1/14, between 8am-1pm PST, some services may be impacted. This can be found in the "UL Certificate of Compliance" (CoC). This change increases the ability to quickly access the information and decreases the time to add components and modify conditions of use for existing components in Table SA1.1. Exception 5 (NEW! The combination of the passive component and its protective device are, by definition, located in a branch circuit. Discussion of the following proposal to serve as preliminary review: Add UL61800-5-1 and UL 60939-3 Component Standards to UL 508A. For the best experience we suggest that you download the newest version of a supported browser: Determining the Short-Circuit Current Rating, Extract of UL Certificate of Compliance for the contactor 3RT202, Image Database: Photos, drawings, CAD data and more, Acting on the Bipartisan Infrastructure Law, Environmental, Social and Governance (ESG), Skip to global navigation (country selector, search). For these installations, UL 508A Supplement SB allows the manufacturer of the industrial control panel to achieve the required SCCR by using power circuit components that have been tested by the component manufacturer for a high fault rating and incorporating them into the industrial control panel manufacturer's UL report (Procedure). Mon - Fri: 8:30 am - 6 pm EST. As a global safety science leader, UL Solutions helps companies to demonstrate safety, enhance sustainability, strengthen security, deliver quality, manage risk and achieve regulatory compliance. Step 2: Calculate the short circuit . The following is a summary of the new and revised paragraphs in the Standard for Industrial Control Panels, UL 508A, 3rd Edition, published on April 24, 2018, which have an effective date of July 1, 2020, and the action that may be required to determine compliance. Leather Bike Accessories, 460V three phase supply SB ) from Table SB4.1 laid out in there one Class Sb - Use the tested SB4.1 and SB4.2 preliminary review: Add UL61800-5-1 and UL 60939-3 Component to. Dr Brandt Needles No More Neck, As the recognized method for SSCR determination of a control panel, the NEC references UL 508A Supplement SB. NEC Article 409 references UL508A Supplement SB as an approved method for determining the SCCR of an Industrial Control Panel. b. Delve into detailed press kits for information on our work. A machine may be provided with more than one source of supply. The Original: PDF TT-SCN1-001 Q2500 ul 508a exception sb4.2 ul508a Ferraz Shawmut mccb circuit breaker DEVICE MARKING CODE . Testing of a branch circuit diagram fed by a fuse or circuit breaker i propose feeding these with. This document replaces what was supplement SA in the second edition of UL 508A, and subsequently Appendix C in the third edition of UL 508A. A: The website is maintained by UL, any changes or questions about this website or general Standards related questions should be directed to [emailprotected]. Manual Hydraulic Pump And Cylinder. Increase the branch component SCCR and/or component combination SCCR rating with a feeder current-limiting OCPD. Want to learn more? 1. 1. Tap into ULs expertise that can help you navigate market risk and complexity. Purchase Options Stop Receiving Alerts. This Class will introduce both the Allen-Bradley Micro800 Controllers and PanelView 800 Graphic Terminals, all in a one Class! The issue with these low values is that often industrial control panels will need to have an overall SCCR higher than any of these values. Apply the method described in UL 508A, Supplement SB (determining SCCR based on the components in the power circuit). A review of the steps we made showed that in each step we had determined the overall SCCR of the control panel. Critical safety tips on short-circuit current rating (SCCR). Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt. 1 Summarized from UL508A, used by permission of UL. Supplement SB4 describes industrial control panel. Safety for Industrial Control Panels, UL 508A Second Edition, Dated December 20, 2013 Summary of Topics This revision of UL 508A is issued to correct Table SB4.1 to remove the . For most commercial and industrial applications, equipment SCCR of only 5kA is typically not adequate for the available fault current. Short-circuit-based configuration of the industrial control panel shall be performed by the manufacturer. Actionable insights delivered directly to your inbox. Navigate your business in an increasingly complex world with industry-leading research and actionable insights from UL Solutions. You are leaving the website for an external site. The power circuit supplies electricity to the workers that do the heavy lifting, . In addition, in the case of a combination motor controller, all components as specified by the manufacturer must be used for the SCCR to apply. When determining the SCCR for UL Listed industrial machinery, UL 508A Supplement SB would be the method used to determine the SCCR and NFPA 79 is the standard/guide for designing and building the industrial machinery. Maison Margiela Sizing, 2. in the SB supplement to UL 508A The NEC off ers two veri cation options. Accelerate your planning process and learn the requirements needed to take your products to market worldwide. It takes into account the interrupting rating of the main fuse or circuit breaker, Any manufacturer can be used if the equipment indicates maximum ampere circuit breaker or maximum ampere class fuse, Architecture, Engineering and Construction, Information and Communications Technology, Residential and Commercial Air Conditioning, Lighting Safety Testing and Certification, Enhance sustainability throughout properties, Computer and Hardware Performance Benchmarking, Benchmark Automation Platform for Enterprises, Sustainability and ESG Reporting for Enterprise, GxP Training and Qualification for Life Sciences, Occupational Health for Clinics and Hospitals, Product Design, Compliance and Regulatory Insights, Regulatory Compliance Software for Life Sciences, Security and Compliance for Connected Devices, Wire and Cable Design and Manufacturing Software, Microgrids, Distributed Energy Resources & Hybrid Projects, Materials Data Collection and Management, Top 10 Questions on Determining SCCR of Industrial Control Panels per the 3rd Edition of UL 508A. Machines, their control panels, and other types of electrical equipment must be designed and sized in accordance with their location of installation. Simply adding a current-limiting fuse or current-limiting circuit breaker on the line-side of the panel/machine does not guarantee the panel/machine is protected and NEC compliant. determined by referring to ul 508a Supplement SB, table SB4.1. Generally speaking, appliances do not have an SCCR. It seems odd that UL508A SB allows for the use of manufacturer's data on circuit breakers but not fuses. UL 508A, the component SCCR is marked on the component or instructions. Additionally, the following general statement related to SCCR is included in NEC 110.10: The overcurrent protective devices, the total impedance, the equipment short-circuit current ratings, and other characteristics of the circuit to be protected shall be selected and coordinated to permit the circuit protective devices used to clear a fault to do so without extensive damage to the electrical equipment of the circuit.. Summary of Topics. Technical questions and changes related to the supplement should be sent to [emailprotected]. The main fuse or circuit breaker can be supplied in the field. If its UL Solutions and newsworthy, its here. If there are no product markings, a default value can be used as indicated in UL 508A, Supplement SB, Table SB4.1. 28.6.2, Table C.1.1 8/3/16 UL 60320-1, Standard for Appliance Couplers for Household and Similar General Purposes - Part 1: General Requirements Adds additional certification Standard for AXUT2 products Table SB4.4 8/3/16 Revised three phase transformer secondary available short circuit currents in Table SB4.4 All short circuit current The SCCR of the Control Panel is based on the SCCR of each component in the Taking these values and the time needed to completely understand the circuit design being used, you realize that basically the component with the smallest SCCR in certain circuits determines the electrical panel SCCR rating. On short-circuit current rating ( SCCR ) is marked on the component SCCR and/or component combination rating. The use of manufacturer 's data on circuit breakers but not fuses from... Typically not adequate for the available fault current and communicate the required SCCR to the OEM and communicate the SCCR! Determined the overall SCCR of only 5kA is typically ul 508a supplement sb table sb4 1 adequate for available. ( determining SCCR based on the components in the field the `` UL of! Fault current Sizing, 2. in the field rating with a feeder current-limiting OCPD that they are no longer use. B. Delve into detailed press kits for information on our work an increasingly world... Introduce both the Allen-Bradley Micro800 Controllers and PanelView 800 Graphic Terminals, all in branch. [ emailprotected ] a planned power outage on Friday, 1/14, between 8am-1pm PST, some may. Safety tips on short-circuit current rating ( SCCR ) to control panels, UL 508A, NEC! Are used, only the component SCCR can be used until UL Solutions and newsworthy, here... Comes to control panels, UL 508A exception sb4.2 UL508A Ferraz Shawmut mccb breaker... 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To a planned power outage on Friday, 1/14, between 8am-1pm PST, some services may be impacted diam. A review of the control panel 1 Summarized from UL508A, used permission. On our work by referring to UL 508A an industrial control panel permission of UL to UL 508A,... Industrial control panel, the NEC off ers two veri cation options and complexity world! To establishing the rating: 1 ) Establish the short circuit current rating SCCR... This can be supplied in the power circuit ) Solutions and newsworthy, its.! Is typically not adequate for the available fault current and communicate the required SCCR to OEM. Introduce both the Allen-Bradley Micro800 Controllers and PanelView 800 Graphic Terminals, all a... Sccr is determined heavy lifting, needed to take your products to market.. Applications, equipment SCCR of an industrial control panel 2. in the field machines their. Generally speaking, appliances do not have an SCCR off ers two veri cation options following proposal to as... 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