1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 499 Electric Heating Appliances STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHO
2、RIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Electric Heating Appliances, UL 499 Fourteenth Edition, Dated November 7, 2014 Summary of Topics This revision of ANSI/UL 499 includes Requirement Revisions for Steam Generators. The new and revised
3、requirements are substantially in accordance with Proposal(s) on this subject dated December 2, 2016. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. All rights reserved. No part of this publication may be reprodu
4、ced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides this Standard as is without warranty of any kind, either expressed or implied, including but not limited to, the implie
5、d warranties of merchantability or tness for any purpose. In no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of prots, lost savings, loss of data, or any other damages arising out of the use of or the inability to use this Standard,
6、even if UL or an authorized UL representative has been advised of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards for Safety agree to de
7、fend, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. FEBRUARY 23, 201
8、7 UL 499 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL FEBRUARY 23, 2017 UL 499 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL NOVEMBER 7, 2014 (Title P
9、age Reprinted: February 23, 2017) 1 UL 499 Standard for Electric Heating Appliances First Edition October, 1930 Second Edition October, 1933 Third Edition December, 1936 Fourth Edition May, 1940 Fifth Edition January, 1949 Sixth Edition August, 1956 Seventh Edition June, 1962 Eighth Edition July, 19
10、68 Ninth Edition January, 1972 Tenth Edition December, 1978 Eleventh Edition June, 1987 Twelfth Edition March, 1997 Thirteenth Edition November, 2005 Fourteenth Edition November 7, 2014 This ANSI/UL Standard for Safety consists of the Fourteenth Edition including revisions through February 23, 2017.
11、 The most recent designation of ANSI/UL 499 as an American National Standard (ANSI) occurred on February 23, 2017. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, and Title Page. The Department of Defense (DoD) has adopted UL 499 on August 17, 1987. The publication o
12、f revised pages or a new edition of this Standard will not invalidate the DoD adoption. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (
13、CSDS) at https:/. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT
14、2017 UNDERWRITERS LABORATORIES INC. ANSI/UL 499-2017UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL FEBRUARY 23, 2017 ELECTRIC HEATING APPLIANCES - UL 499 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION
15、OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .9 2 Glossary .9 3 Units of Measurement 10 4 Undated References .10 CONSTRUCTION 5 General .10 6 Components 10 6.1 General 10 6.2 Requirements for Components 11 7 Frame and Enclosure 16 8 Assembly .26 9 Stability .27 10 Corrosi
16、on Protection 27 11 Supply Connections Permanently-Connected Products 28 11.1 General .28 11.2 Wiring terminals 29 12 Supply Connections Cord Connected Products .31 12.1 General .31 12.2 Strain relief 38 12.3 Pin terminals .38 12.4 Bushings 39 13 Current-Carrying Parts 40 14 Internal Wiring 41 14.1
17、General .41 14.2 Protection of wiring .41 14.3 Splices 42 14.4 Separation of circuits .42 15 Heating Elements .44 16 Electrical Insulation .45 17 Thermal Insulation 45 18 Motors .46 19 Overcurrent Protection of Conductors and Heating Elements .46 20 Motor-Running Overload Protection .48 21 Motor and
18、 Power-Transformer Short-Circuit and Ground-Fault Protection 48 22 General (Short-Circuit and Ground-Fault) Overcurrent Protection .48 23 Thermal Cutoffs 49 24 Lampholders .49 25 Switches .50 26 Automatic Controls and Control Circuits .51 27 Spacings 52 27.1 Line-voltage circuits 52 27.2 Low-voltage
19、 circuits .53 28 Grounding .54 29 Leakage Current Collectors 55 30 Pressure Vessels and Parts Subject to Pressure .56 31 Protection Against Injury to Persons .56B FEBRUARY 23, 2017 ELECTRIC HEATING APPLIANCES - UL 499 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION W
20、ITHOUT PERMISSION FROM UL PERFORMANCE 32 General 57 33 Power Input Test .59 34 Leakage Current 59 35 Escape Current Test 63 36 Normal Temperature Test 63 36.1 General .63 36.2 Ceramics-baking kilns and ovens .69 36.3 Charcoal ignitors .69 36.4 Stock-tank de-icers, stock waterers, and the like .69 36
21、.5 Liquid heaters and vaporizers, cord-connected .69 36.6 Poultry and livestock brooders .70 36.7 Soldering irons and soldering guns and desoldering tools .70 36.8 Solder pots, nonautomatic .70 36.9 Warming trays .70 36.10 Water heaters of the side-arm type 70 36.11 Refrigerator defrosters .71 36.12
22、 Heat guns 71 36.13 Hybrid adhesive guns 71 36.14 Semi-rigid enclosed pet heating mat/pad .71 37 Test of Insulation Resistance and Leakage Current as a Result of Moisture .72 38 Dielectric Voltage-Withstand Test .75 39 Mechanical Endurance Test 76 40 Resistance to Impact 77 41 Overow Test 80 42 Abno
23、rmal Operation Test 80 42.1 General .80 42.2 Products with breakable exterior surfaces .81 42.3 Products with breakable surfaces 81 42.4 Heat guns .82 42.5 Ceramics-baking kilns and ovens .83 42.6 Charcoal ignitors .83 42.7 Stock-tank de-icers, stock waterers, and the like .83 42.8 Warming trays .84
24、 42.9 Immersion heaters 84 42.10 Liquid heaters 84 42.11 Ovens .84 42.12 Poultry and livestock brooders 84 42.13 Solder pots, nonautomatic 84 42.14 Soldering irons 85 42.15 Hot plates 85 42.16 Ceramic products .85 42.17 Vaporizers of the resistance-wire type .86 42.18 Heating appliances employing fa
25、ns or blowers 86 42.19 Hybrid adhesive guns 86 43 Testing of Component Switches and Control Devices .87 43.1 Overload test for motor switches .87 43.2 Overload test for automatic controls 87 43.3 Endurance test for thermostats 88 43.4 Limited short circuit test for motor-control devices 89 44 Strain
26、 Relief Test .89 45 Push-Back Relief Test 90 FEBRUARY 23, 2017 ELECTRIC HEATING APPLIANCES - UL 499 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 46 Test for Permanence of Cord Tag for Outdoor-Use Heating Appliances with Power-Supply Cord
27、s Less than 6 Feet (1.8 m) 90 47 Crushing Resistance for Flexible Pet Heating Mats/Pads 91 48 Appliance Coupler Retention .92 49 Connector Current Interruption .93 MANUFACTURING AND PRODUCTION-LINE TESTS 50 Production-Line Dielectric Voltage-Withstand Test 93 51 Polarization and Grounding Continuity
28、 Tests .95 51.1 Continuity of grounding connection test .95 51.2 Polarization continuity test .96 51.3 Electrical indicating device .96 RATINGS 52 Details .96 MARKINGS 53 Details .97 54 Instructions .106 ELECTRODE-TYPE HEATING APPLIANCES 55 Scope 107 56 General 107 57 Construction 107 58 Operation T
29、est 107 59 Vaporizer-Operation Test .108 60 Leakage Current Test 109 61 Disassembly and Reassembly Test 110 62 Markings .110 63 Operating Instructions 111 64 Label Adhesion Tests 112 THERMOSTAT OVERRIDE UNITS 65 General 113 66 Temperature Test 113 67 Overload Tests 114 STEAM-BATH GENERATORS 68 Scope
30、 116 69 General 116 70 Construction 116 70.1 Supply connection .116 70.2 Temperature-limit controls 117 70.3 Feed water solenoid valve 117 70.4 Feed water sensors and circuits 117 70.5 Low-water sensors and circuits .117 70.6 Drain valve .118 FEBRUARY 23, 2017 ELECTRIC HEATING APPLIANCES - UL 499 5U
31、L COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 70.7 Pressure vessels and parts subject to pressure .118 70.8 Pressure-relief device 118 70.9 Protection against injury to persons 118A 70.10 Output pressure regulating valve .118A 71 Performanc
32、e .118A 71.1 General .118A 71.2 Power input test .118A 71.3 Leakage current .118A 71.4 Test of insulation resistance and leakage current as a result of moisture .118A 71.5 Normal temperature test 118A 71.6 Abnormal operation general .118B 71.7 Abnormal operation no water 118B 72 Markings .119 73 Ins
33、tructions .124 73.1 General 124 73.2 Installation instructions .124 73.3 Important safety instructions 125 METAL SHEATHED HEATING ELEMENTS COMPONENTS GENERAL 74 Scope 126 75 General 126 76 Glossary 126 METAL SHEATHED HEATING ELEMENTS COMPONENTS CONSTRUCTION 77 Construction 127 78 Insulation .128 79
34、Spacings .128 METAL SHEATHED HEATING ELEMENTS COMPONENTS PERFORMANCE 80 General 129 81 Power Input Test 130 82 Dielectric Voltage-Withstand Test 130 83 Leakage Current Test 131 84 Temperature Test 132 METAL SHEATHED HEATING ELEMENTS COMPONENTS RATING 85 Details .133 METAL SHEATHED HEATING ELEMENTS C
35、OMPONENTS MARKING 86 Details .133 DIRECT PLUG-IN HEATING APPLIANCES 87 General 134 88 Construction 134 89 Performance 139 90 Markings .139 FEBRUARY 23, 2017 ELECTRIC HEATING APPLIANCES - UL 499 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM U
36、L APPLIANCES GENERATING ULTRAVIOLET (UV) RADIATION 91 Appliances generating ultraviolet (UV) radiation .140 91.1 General 140 91.2 Construction 140 91.3 Protection against injury to persons .140 91.4 Performance 142 91.5 Markings .145 91.6 Instructions .146 ELECTRIC SOAP KETTLES 92 Additional Require
37、ments for Electric Soap Kettles .148 92.1 General 148 92.2 Construction 148 92.3 Performance 149 92.4 Markings and instructions 154 VIVARIUM HEATERS (REPTILE TANK HEATER) EMPLOYING THIN FILM RESISTANCE HEATING ELEMENTS 93 Vivarium Heaters (Reptile Tank Heater) Employing Thin Film Resistance Heating
38、Elements .155 93.1 General 155 93.2 Construction 155 93.3 Performance 156 93.4 Markings .159 93.5 Instructions .159 SUPPLEMENT SA - ELECTRIC HEATER GUNS FOR GOVERNMENT USE INTRODUCTION SA1 Scope SA1 CONSTRUCTION SA2 Switches SA1 SA3 Power-Supply Cord SA1 SA4 Accessories .SA1 SA5 Heat Regulation .SA1
39、 SA6 Dimensions and Tolerances .SA2 SA7 Finish SA2 SA8 Workmanship .SA2 REGULATORY REQUIREMENTS SA9 Recovered Materials .SA2 FEBRUARY 23, 2017 ELECTRIC HEATING APPLIANCES - UL 499 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL PERFORMANCE
40、SA10 Temperature and Air Flow Tests .SA2 SA10.1 General .SA2 SA10.2 Temperature test .SA3 SA10.3 Air ow test .SA6 RATINGS SA11 Details SA6 MARKINGS SA12 Details SA6 PROCUREMENT SA13 Government Procurement and Acquisition Notes SA7 SA13.1 Part identication number (PIN) SA7 SA13.2 Ordering data SA7 SA
41、13.3 National Stock Numbers (NSNs) .SA7 SUPPLEMENT SB - Heat Guns Operating from Rechargeable Battery Power SB1 General SB1 SB2 Glossary SB1 SB3 Construction SB1 SB4 Performance SB2 SB4.1 General SB2 SB4.2 Input / output test battery powered heat guns .SB2 SB4.3 Normal temperature test .SB2 SB4.4 Ch
42、arger temperature test .SB3 SB4.5 Dielectric voltage withstand test .SB3 SB4.6 Battery enclosure impact test .SB3 SB4.7 Drop test .SB4 SB4.8 Abnormal operation/discharging .SB4 SB4.9 Battery short circuit SB5 SB5 Markings .SB6 SB6 Instructions .SB6 FEBRUARY 23, 2017 ELECTRIC HEATING APPLIANCES - UL
43、499 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover heating appliances rated at 600 V or less for use in unclassied locations in accordance with the National Electrical Code (NEC), ANSI/NFPA
44、 70. 1.2 These requirements do not cover electric heating equipment or appliances that are covered by individual requirements that are separate from this Standard. 1.3 For the purposes of this Standard, a heating appliance is dened as an electrically energized product that directly or indirectly gen
45、erates heat to perform its intended function. 1.4 These requirements also cover electrically energized products that generate steam for other than space heating purposes and have an electrical power rating of 15 kW or less per steam generating vessel. 1.5 Except as noted for steam-bath generators, s
46、team generating products of the type described in 1.4 having an electrical input power rating of more than 15 kW per steam generating vessel are to be evaluated by the requirements in the Standard for Heating, Water Supply, and Power Boilers Electric, UL 834. 1.6 Each steam generating vessel in a mu
47、lti-vessel unit shall comply with these requirements. The unit shall also be provided with the marking in 53.42. 2 Glossary 2.1 FLEXIBLE PET HEATING MATS/PADS A pet heating mat/pad which employs a non-metallic enclosure (envelope) and can be easily bent or folded for storage. 2.2 HYBRID ADHESIVE GUN
48、 An adhesive gun which can be operated under mains, battery, and mains-plus-battery inputs. Adhesive guns are also known as “hot melt guns” and “glue guns”. The requirements for hybrid adhesive guns do not currently contemplate battery recharging or trickle charging constructions. 2.3 INSTANTANEOUS
49、WATER HEATER, BARE-ELEMENT A water heater in which uninsulated heating elements are immersed in the water. 2.4 PET HEATING MATS/PADS A heating appliance intended to provide warmth to a pet. Such a device may be used with or without additional fabric and ll based bedding. 2.5 RIGIDLY ENCLOSED PET HEATING MATS/PADS A pet heating mat/pad which employs a stiff thermoplastic enclosure or metal enclosure such that the appliance can not be folded or rolled for storage when not in us
