2006年12月12日 · 1.1 This Standard specifies the requirements for single-conductor and multiple-conductor thermoset-insulated wires and cables rated 600 V, 1000 V, 2000 V, and 5000 V, for use in accordance with the...

The La Marche model A32 series is an UPS system designed to power critical AC loads. All sub-system components utilize a 48VDC bus and are listed under the UL 1481 Fire Protectitive Signaling Standard, making them ideal for central station and critical alarm system protection.

2006年12月12日 · This new edition of UL 1481 is being issued through UL’s electronic publishing system to ensure format uniformity between the PDF and HTML versions of the document. While numbering and figure placement, where appropriate, may have been updated, no substantive changes have been incorporated in the document. None available.

2017年12月22日 · ul 1481 Standard for Power Supplies for Fire-Protective Signaling Systems UL Bulletin Edition 5 Published Date: December 22, 2017 Last Revision: December 12, 2006

2014年12月1日 · Overview of Changes: The STP 864 incorporated the requirements for Amplifiers and Power Supply Units for use in fire alarm and emergency communication systems from UL 1711 and UL1481 into the Standard for Control Units and Accessories for Fire Alarm Systems, UL 864 10th edition.

UL 1481 - Power Supplies for Fire Protective Signaling SystemsPlease note: All interim revisions for this edition available at time of your purchase will be included.

Purchase Standard: UL 1481 - Standard for Power Supplies for Fire-Protective Signaling Systems Standard comes with all previously published revisions

2019年8月17日 · UL 1481. Scope. These requirements cover comm ercial stationary and fixed power supplies for fire-protective signaling systems, having input and output ratings of not more than 300 volts, direct- and alternating-current, (DC and AC), for use in indoor locations in accordance with the following Standards of the National Fire Protection Association:

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UL 1481 – Power Supplies for Fire Protective Signaling Systems. Please note: All interim revisions for this edition available at time of your purchase will be included. Scope.