Ul 508a establishes guidelines for the product as well as conser. This guide is not intended to be used in lieu of ul 508a or other regulatory standards. Ul 508a is a subset of ul 508 and is specifically for industrial control panels. Cables according to nec, nfpa 79 and ul 508a standards. The standards for industrial control panels icps for use in hazardous locations are ul 1203, nfpa 496 and ansiisa 12. Ul offers training in constructing industrial control panels in accordance with ul 508a. Ul 508a cabinet level ul listed andor ul regognized if in compliance with ul 508a 29. There is presently no direct equivalent to ul 508a in the canadian standards. The basis are the safety rules prescribed by the national electrical code nec. Requirements for industrial control panel safety, implications of ul 508a 2nd edition. Ul certification customers have free access to ul standards, not including ul iec based standards. This document gives guidelines to panel builders on various issues including proper component selection, wiring methods and calculation of short circuit current ratings. This guide replaces neither the standards including ul 508a that electrical equipment must comply with nor the requirements of standard profes.
A brief history of ul 508a and tips for how control panel. We design, assemble, and install ul certified panels and can bring existing control panels up to ul safety standards, as well as build panels from the ground up meeting the customer requirements, while following ul. And ul, with help from industry representatives like me, has been working on doing just that for a good 10 years. The training will primarily focus on uls policies for building industrial control panels and how to navigate the ul 508a standard. Ul 508a supplement sa specific component requirements ul.
The ul508a mark indicates to you that all details of the integration of the components within this enclosure were done consistent. These requirements cover industrial control panels intended for general industrial use, operating from a. We are able to supply control panels in nema 1, 12, 3r, 4x enclosures. Fulfilling key requirements of relevant north american standards 2 3 20 1 feeder main. The following types of machines are identified as industrial machinery. Our breadth, established objectivity and proven history mean we are a symbol of trust, enabling us to help provide peace of mind to all. It supersedes the previous version of this document dated june 20, 2018 references in this document to sections or paragraphs in ul 508a are understood to be to the third edition of the standard with revisions dated july 3, 2018. The ones most commonly associated with electrical control panels are ul 508a, nec, nema, and iec. How to facilitate the ulcompliant approval to your control panel. Schneider electric electrical distribution roger pollack june 2008 8. These standards ensure public safety, and provide assurances.
This certifies it meets the ul508 safety standard and was produced by panel shop with ul 508a certification. Purchase ul standards online official ul standards sales. Equipment intended to be connected to a source of supply greater. Such evaluations are covered by the standards applicable to the complete piece of utilization equipment. Ul 508a standard for industrial control panels first edition april, 2001 second edition december 20, 20 this ul standard for safety consists of the second edition including revisions through january, 2014.
A circuit that carries the electric signals directing the performance of a controller, and which does not carry the main. Ul 508 application guide make the most of your energysm. These are acronyms for the safety standards used to produce and install electrical control panels and electrical wiring systems. Ul 508a, standard for industrial control panels intertek. We can manufacture control panels from customer supplied drawings, or we can create an effective custom solution for an application based on intended requirements. A panel that carries a ul508a certified mark does not mean that the completed control panel has been designed and tested to ul 508a standards. Plastics machinery, including injection molding, extrusion, blow molding, specialized processing, thermoset molding and size reduction.
June 2008 ul 508 application guide make the most of your energysm. Standards subscriptions from ansi provides a moneysaving, multiuser solution for accessing standards. Ul 508 labelling ul 508a certification to panel builder. Conductors and components of branch and feeder circuits. Ul 218 fire pump controllers ul 508a industrial control panels ul 508c power conversion equipment adjustablespeed drive and accessories or modules for use with an adjustablespeed drive ul 845 motor control centers. Ul508a is the ul standard for the construction of industrial control panels. Documents sold on the ansi webstore are in electronic adobe acrobat pdf format, however some iso and iec standards are available from amazon in hard copy format. Ul 508a certification provides the inspection authority and your customer evidence that the control panel complies with nationally recognized safety standards. 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. Requirements for industrial control panel safety, conductors.
Ul 508a covers industrial control panels and industrial panel enclosures operating at 600. Like most industries the electrical industry uses many acronyms. In regards to power supplies, ansiul 610101 and ansiul 610102201 have replaced the old ul 508 standard for industrial control equipment. Ul 508a covers industrial control panels and industrial panel enclosures operating at 600 volts. Jun 30, 2015 the ul representative at the meeting understood their predicament and vowed to try to harmonize the ul 508 standards with the latest iec standards. Periodic audits of manufacturers that carry the ul 508a certification. Eatons assortment of new supplementary handles meet these stricter requirements in both the. Ul standards development covers more than just products.
Control panel design guide according ul 508a build it in. Our engineering staff can assist in the design of your panelboards to meet the most stringent of ul 508a standards. Includes explosionproof, purged pressurized and nonincendive type panels. Ul 508a control panel design guide newark element14. Standards page 1 of 205 ul 508a standard for safety industrial control panels purchase options next last standard for industrial control panels ul standard o scope o summary ot topics standard standard 508a. Metalworking machine tools, machines that cut or form metal. These standards provide details and guidelines for the design, placement, durability and colors of needed labels. Sccr ratings instruction sheets with sccr ratings ul tested combinations pdf. In 2005 ul 508a was changed to require control panel builders to include a short circuit current rating on the control panel assembly. Bedeutung, geltungsbereiche, beispiele induux wiki. Ul 508a the standard ul 508a industrial machinery the following types of machines are identified as industrial machinery. Ul standard for safety industrial control equipment.
If a customer follows ul 508a s construction requirements and. The topic of short circuit current ratings as described in this paper is in line with current marking requirements in the us. Codes and regulations for panel builders wtwh media. The evaluation of a prefabricated building, structure, or platforms supplied with industrial control panels are not covered by the.
Ul508a is a safety standard for industrial control panels adopted by. Ul 508 is the standard for industrial control equipment, whereas ul 508a is for industrial control panels. Formerly supplement sa of ul 508a 1 listed components 1. Ul 508a is the reference standard for the industrial control panels in the usa. Mmc marked suitable as tap 24 apr ul standard for safety for industrial control equipment, ul 508. Ul panels are third party safety approved so other third parties can easily approve them. This makes fulfilling the global regulatory requirements considerably easier for power supply manufactur. December 19, 2017 ul and dgn sign collaboration agreement on standards october 20, 2017 ul standards program manager, deborah prince, recognized with the 2017 ansi meritorious service award during the ansi awards banquet and ceremony held during the us celebration of world standards week october 10, 2017 ul standards program manager, joe. Ul 508a industrial control panels power distribution and control. The ul 508a standard directs manufacturers on various issues regarding. Comments or proposals for revisions on any part of the standard may be submitted to ul at any time. References in this document to sections or paragraphs in ul 508a are understood to be to the third edition of the standard with revisions dated.
Equipment standards only require the sccr to be marked nec requires the marked value to be adequate for the maximum available fault current. Ul 508a is a standard covering industrial control panels. Always consult all pertinent actual regulatory standards and local standard representatives to ensure full compliance. We will help with the acceptance ul 508a standard pdf download a1d9fc608e share on facebook 31 aug 2010. The secure pdf file needs to remain open for offline viewing.
A ul panel shop can independently design and produce ul panels. A ul508a panel is an electrical control panel with a ul508a label. Csds proposals including access to uls collaborative standards development system. Our engineering staff can assist in the design of your panelboards to meet the most stringent of ul508a standards. December 19, 2017 ul and dgn sign collaboration agreement on standards october 20, 2017 ul standards program manager, deborah prince, recognized with the 2017 ansi meritorious service award during the ansi awards banquet and ceremony held during the us celebration of world standards week october 10, 2017 ul. Ul508a and nfpa79 have a quasilegislative character. It stands to reason, however, that the nec and cec3 will come to. We design, assemble, and install ul certified panels and can bring existing control panels up to ul safety standards, as well as build panels from the ground up meeting the customer requirements, while following ul safety standards. The nec has article 409 dedicated to the industrial control panels, but it contains few details. This keeps the manufacturers on their toes to keep meeting the ul requirements. Ul 508a control panel design considerations c3controls.
We will help with the acceptance ul 508a standard pdf download a1d9fc608e share on facebook in industrial control panels according to ul508a. Sa in the second edition of ul 508a, and subsequently appendix c in the third edition of ul 508a. With over a century of experience in the development of more than 1,500 standards, ul is an accredited standards developer in the us and canada. Ul is a global independent safety science company offering expertise across three strategic businesses. Ul standard for safety industrial control panels english. Find the most uptodate version of ul 508a at engineering360. Ul also tests and certifies to these critical industrial standards. Always consult all pertinent actual regulatory standards and local standard representatives to ensure. Ul standards setting safety standards are written documents that outline the process in which a product is tested to help mitigate risk, injury or danger. Underwriters laboratories ul is an independent testing company that provides product safety standards and third party product safety certification. Ul standard for safety for industrial control panels, ul 508a second edition, dated december 20, 20 summary of topics this revision of ul 508a is issued to correct table sb4. This guide replaces neither the standards including ul 508a that electrical equipment must comply with nor the requirements of standard profes sional practice. While that seems a reasonable request, and is certainly in the best interest of safety, in practice it can be difficult to comply with. Ul 508a, supplement sb is an approved method to determine sccr for industrial control panels and industrial machinery control panels.
Ul 508a standard for industrial control panels standards catalog. A secure pdf license can be reassigned to a different computer if necessary. Harmonic filters are available as both ul 508 and ul 508a as they fall into both categories. It is the responsibility of the equipment manufacturer to ensure compliance with all applicable standards. Compliance with the standard for automatic electrical controls for household and similar use, part 1.
Concept solid singledoor, door with window and flushmount models ul 508a listed. Their functionality is similar, but the selection of the listing mark will depend on the need and application. The ul representative at the meeting understood their predicament and vowed to try to harmonize the ul 508 standards with the latest iec standards. Jul 07, 2015 in 2005 ul 508a was changed to require control panel builders to include a short circuit current rating on the control panel assembly. Ul standards encompass ul s extensive safety research and scientific expertise. Fire pump controllers are covered by the requirements in the standard for fire pump controllers, ul 218. These standards apply when the entire control panel is located in a hazardous location. An internet connection is required to open a secure pdf. A project for an ordinary location listing provides certification and training with a ul engineer at your facility for private onboarding training. In order to open a secure pdf, you will need to install the fileopen plugin and register your computer. References in this document to sections or paragraphs in ul 508a are understood to be to the third edition of the standard with revisions dated july 3, 2018. The standards for industrial control panels icps for use in hazardous locations are ul1203, nfpa 496 and ansiisa 12.
These requirements cover industrial control panels intended for general industrial use, operating from a voltage of volts or less. These are acronyms for the safety standards used to produce and install electrical control panels and. Ul 508a industrial control panels power distribution and. This document is intended to be used to determine the requirements for components when used in industrial control panels. Ul standardssetting safety standards are written documents that outline the process in which a product is tested to help mitigate risk, injury or danger. Selecting the right switch for the right application. Ul standards encompass uls extensive safety research and scientific expertise. Requirements for industrial control panel safety, implications of ul. Ul 508a standard pdf download a1d9fc608e share on facebook 31 aug 2010. Benefits of selecting an enclosure or cabinet that carry the ul 508a certification include. Ul 508a standard for industrial control panels standards. Ul 508a, but is by no means an exhaustive guide, and does not cover all uses and applications associated with ul 508a regulations. Eaton s assortment of new supplementary handles meet these stricter requirements in both the ul 508a and nfpa 79 standards. Ul 508a is the ul standard for the construction of industrial control panels.
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