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UL Standards Update: May 1-15

Underwriters Laboratories has announced the availability of the following standards, revisions and bulletins.  For additional information regarding the standards listed below, please visit their website at www.ul.com.

STANDARDS:

UL 20 – General-Use Snap Switches
New Edition dated May 10, 2010REVISIONS:

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Near and Far Field Measurements with a Vector Network Analyzer

For optimal performance in over-the-air RF systems, antennas must meet specific requirements. Performance parameters like size, wind-loading, environmental ruggedness, transmission pattern, bandwidth, and power handling capability should be considered. Methods of measuring the transmission (or reception) pattern that determines antenna gain with a VNA will be examined in this article.

UL 621 – Standard for Ice Cream Makers
New Edition dated May 7, 2010

UL 1450 – Standard for Motor-Operated Air Compressors, Vacuum Pumps, and Painting Equipment
New Edition dated May 5, 2010

REVISIONS:

UL 123 – Standard for Oxy-Fuel Gas Torches
Revision dated April 30, 2010

UL 217 – Standard for Single and Multiple Station Smoke Alarms
Revision dated May 11, 2010

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UL 444 – Communications Cables
Revision dated April 30, 2010

UL 555 – Standard for Fire Dampers
Revision dated May 4, 2010

UL 555C – Standard for Ceiling Dampers
Revision dated May 4, 2010

UL 555S – Standard for Smoke Dampers
Revision dated May 4, 2010

UL 567 – Standard for Emergency Breakaway Fittings, Swivel Connectors and Pipe-Connection Fittings for Petroleum Products and LP-Gas
Revision dated May 5, 2010

UL 813 – Standard for Commercial Audio Equipment
Revision dated May 7, 2010

UL 858 – Standard for Household Electric Ranges
Revision dated May 7, 2010

UL 879 – Standard for Electric Sign Components
Revision dated May 7, 2010

UL 896 – Standard for Oil-Burning Stoves
Revision dated May 7, 2010

UL 1004 -2 – Standard for Impedance Protected Motors
Revision dated May 11, 2010

UL 1034 – Standard for Burglary-Resistant Electric Locking Mechanisms
Revision dated May 14, 2010

UL 1086 – Standard for Household Trash Compactors
Revision dated May 7, 2010

UL 1091 – Standard for Butterfly Valves for Fire-Protection Service
Revision dated May 12, 2010

UL 1123 – Standard for Marine Buoyant Devices
Revision dated May 7, 2010

UL 1449Standard for Surge Protective Devices
Revision dated May 3, 2010

UL 1561 – Standard for Dry-Type General Purpose and Power Transformers
Revision dated May 7, 2010

UL 1647 – Standard for Motor-Operated Massage and Exercise Machines
Revision dated April 30, 2010

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