UL 294B:2013 free download

UL 294B:2013 free download Power Over Ethernet (PoE) Power Sources for Access Control Systems and Equipment
1 Scope
Effective date for 1 changed from December 2, 2015 to December 2,2018
1.1 This standard provides requirements for the evaluation of Power over Ethernet (PoE) power sourcesfor access control systems and equipment.The power sources may be provided integral with the accesscontrol equipment or as a separate device supplying power. The equipment is intended to comply withArticle 725.121,Power Sources for Class 2 and Class 3 Circuits, of the National Electrical Code,NFPA70.Equipment covered by this standard provides a nominal source voltage of 48 or 53 v Dc.
1.2 This standard applies to all connected equipment and interconnections necessary to ensure normaloperation of the PoE powered control system.
1.3 PoE sources covered by this standard are not intended to be located in an outdoor environment.1.4 The PoE source shall meet the applicable requirements of the Standard for Access Control SystemUnits, UL 294.See 2.2.4 and 2.2.5.
Exception: Outdoor Use Equipment; Sections 70 -81 of UL 294 inclusive are not applicable.2 General
Effective date for 2 changed from December 2, 2015 to December 2,2018
2.1 General
2.1.1 Products intended for use in air-handling spaces in accordance with Section 300.22 (C) of theNational Electrical Code,NFPA 70, are additionally investigated to the Standard for Fire Test for Heat andVisible Smoke Release for Discrete Products and Their Accessories Installed in Air-Handling Spaces, UL2043.
2.2 Additional documentation requirements
2.2.1 Products that utilize PoE are connected through standard eight pin RJ-45 connectors. Theconnector configuration shall be supplied in documentation with the PoE power source.
2.2.2 The equipment shall be provided with information concerning the power sourcing equipment (PSE)connector configuration, whether Alternative A or Alternative B or both,and the maximum power classsupported by the (PSE), as defined in the appropriate lEEE standard.
2.2.3 PoE based power sources that meet the requirements of this standard shall specify the UL 294compliant PoE powered access control system and equipment with which it is compatible with.
2.2.4 PoE power sources specified in 2.2.3 shall be tested and in compliance with the Standard forAccess Control System Units, UL 294 or shall comply with the requirements of 2.2.5.
2.2.5 PoE power sources specified in 2.2.3 shall comply with the Standard for Information Technology Equipment – Safety – Part 1 : General Requirements, UL 60950-1 and meet the requirements of 8.1 and 33.1 of the Standard for Access Control System Units, UL 294.
2.3 Components
2.3.1 Except as indicated in 2.3.2, a component of a product covered by this standard shall comply with the requirements for that component. See Appendix A for a list of Standards covering components generally used in the products covered by this standard.