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Standard 991, Edition 3

Standard for Tests for Safety-Related Controls Employing Solid-State Devices

UL Standard
Standard 991, Edition 3 Edition Date: October 22, 2004 $402.00-$998.00

Revisions and Related Documents

Red Line Std. (2)

June 09, 2010 Revision
April 02, 2008 Revision
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Proposals (0)

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UL LLC - Certification Requirement Decision    Learn more about CRDs
April 19, 2007
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Other Updates (0)

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Referenced Standards (0)

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Reverse Referenced Standards (76)

UL 991 is referenced in the following list of UL Standards

82 9 Electric Gardening Appliances
130 13 Standard for Electric Heating Pads
141 9 Garment Finishing Appliances
197 10 Commercial Electric Cooking Appliances
201 3 Garage Equipment
283 3 Air Fresheners and Deodorizers
295 2 Commercial-Industrial Gas Burners
325 7 Door, Drapery, Gate, Louver, and Window Operators and Systems
334 2 Outline of Investigation for Theater Lighting Distribution and Control Equipment
353 5 Standard for Limit Controls
430 8 Waste Disposers
458 6 Power Converters/Inverters and Power Converter/Inverter Systems for Land Vehicles and Marine Crafts
471 10 Standard for Commercial Refrigerators and Freezers
486E 5 Standard for Equipment Wiring Terminals for Use with Aluminum and/or Copper Conductors
489B 1 Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures for Use with Photovoltaic (PV) Systems
489I 2 Outline of Investigation for Solid State Molded-Case Circuit Breakers
561 7 Floor-Finishing Machines
710B 2 Recirculating Systems
710C 3 Outline of Investigation for Ultraviolet Radiation Systems for Use in the Ventilation Control of Commercial Cooking Operations
749 12 Household Dishwashers
756 8 Standard for Coin and Currency Changers and Actuators
858A 3 Safety-Related Solid-State Controls for Household Electric Ranges
859 11 Household Electric Personal Grooming Appliances
943B 3 Appliance Leakage-Current Interrupters
963 4 Standard for Sealing, Wrapping, and Marking Equipment
964 12 Electrically Heated Bedding
987 8 Standard for Stationary and Fixed Electric Tools
1008 9 Transfer Switch Equipment
1008A 2 Transfer Switch Equipment, Over 1000 Volts
1008S 1 Solid-State Transfer Switches
1012 8 Power Units Other Than Class 2
1018 6 Electric Aquarium Equipment
1042 5 Electric Baseboard Heating Equipment
1090 7 Electric Snow Movers
1261 6 Electric Water Heaters for Pools and Tubs
1278 4 Movable and Wall-or Ceiling-Hung Electric Room Heaters
1431 3 Personal Hygiene and Health Care Appliances
1447 6 Standard for Electric Lawn Mowers
1482 7 Solid-Fuel Type Room Heaters
1559 5 Insect-Control Equipment - Electrocution Type
1647 6 Motor-Operated Massage and Exercise Machines
1778 5 Uninterruptible Power Systems
1795 5 Standard for Hydromassage Bathtubs
1815 5 Nonducted Heat Recovery Ventilators
1917 5 Solid-State Fan Speed Controls
1973 3 ANSI/CAN/UL Batteries for Use in Stationary and Motive Auxiliary Power Applications
1995 5 Heating and Cooling Equipment
1996 4 Electric Duct Heaters
2006 5 Standard for Halon 1211 Recovery/Recharge Equipment
2021 4 Fixed and Location-Dedicated Electric Room Heaters
2111 1 Standard for Overheating Protection for Motors
2157 4 Electric Clothes Washing Machines and Extractors
2158 6 Electric Clothes Dryers
2161 2 Standard for Neon Transformers and Power Supplies
2202 3 DC Charging Equipment for Electric Vehicles
2264A 2 Outline of Investigation for Water Electrolysis Type Hydrogen Generators
2267 3 Standard for Fuel Cell Power Systems for Installation in Industrial Electric Trucks
2271 3 Batteries for Use In Light Electric Vehicle (LEV) Applications
2271 3 Batteries for Use In Light Electric Vehicle (LEV) Applications
2442 2 Wall- and Ceiling-Mounts and Accessories
2523 1 Solid Fuel-Fired Hydronic Heating Appliances, Water Heaters, And Boilers
2565 1 Standard for Industrial Metalworking and Woodworking Machine Tools
2580 3 Batteries for Use In Electric Vehicles
2580 3 Batteries for Use In Electric Vehicles
2594 3 Electric Vehicle Supply Equipment
2735 1 Standard for Electric Utility Meters
2753 2 Outline of Investigation for Battery Operated Ride-On Lawn Mowers
2790 1 Standard for Commercial Incinerators
2849 1 Electrical Systems for eBikes
2850 1 Outline of Investigation for Electric Scooters and Motorcycles
5840 1 Electrical Systems of Battery Powered Aviation Ground Support Equipment
8400 1 Virtual Reality, Augmented Reality and Mixed Reality Technology Equipment
9540 3 Energy Storage Systems and Equipment
1400-1 1 Outline of Investigation for Fault-Managed Power Systems - Part 1: Safety Requirements
2231-2 2 Personnel Protection Systems for Electric Vehicle (EV) Supply Circuits: Particular Requirements for Protection Devices for Use in Charging Systems
60335-1 6 Safety of Household and Similar Appliances, Part 1: General Requirements
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