1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 499 Electric Heating AppliancesUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER RE
2、PRODUCTION 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 new edition of ANSI/UL 499 includes the following changes in requirements: Alternate Test Felt for Vivarium Heaters X
3、-Rays for Sheath Heaters Leakage Current Standard Reference Current Collectors for Instantaneous Water Heaters Temperature Limiting Means for Instantaneous Water Heaters The new and revised requirements are substantially in accordance with Proposal(s) on this subject dated June 6, 2014. All rights r
4、eserved. No part of this publication may be reproduced, 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 o
5、r implied, including but not limited to, the implied 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
6、 the use of or the inability to use this Standard, 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 electron
7、ic versions of ULs Standards for Safety agree to defend, 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
8、on the purchasers computer system. The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, gures, and/or other elements of the Standard having future effective dates as indicated in the note following the affected item. The prior text for requirements that
9、 have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. NOVEMBER 7, 2014 UL 499 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL NOVEMBER 7, 2014 UL 499
10、 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL NOVEMBER 7, 2014 1 UL 499 Standard for Electric Heating Appliances First Edition October, 1930 Second Edition October, 1933 Third Edition December, 1936 Fourth Edition
11、May, 1940 Fifth Edition January, 1949 Sixth Edition August, 1956 Seventh Edition June, 1962 Eighth Edition July, 1968 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
12、 This ANSI/UL Standard for Safety consists of the Fourteenth Edition. The most recent designation of ANSI/UL 499 as an American National Standard (ANSI) occurred on November 7, 2014. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date inform
13、ation. The Department of Defense (DoD) has adopted UL 499 on August 17, 1987. The publication of 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
14、be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at http:/. 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 r
15、ights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2014 UNDERWRITERS LABORATORIES INC. ANSI/UL 499-2014UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL NOVEMBER 7, 2014 ELECTRIC HEATING APPLIANCES -
16、UL 499 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION 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 Requ
17、irements for Components 11 7 Frame and Enclosure 16 8 Assembly .26 9 Stability .27 10 Corrosion 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.
18、3 Pin terminals .38 12.4 Bushings 39 13 Current-Carrying Parts 40 14 Internal Wiring 41 14.1 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
19、 of Conductors and Heating Elements .46 20 Motor-Running Overload Protection .48 21 Motor and 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 Co
20、ntrols and Control Circuits .51 27 Spacings 52 27.1 Line-voltage circuits 52 27.2 Low-voltage 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 58 NOVEMBER 7, 2014 ELECTRIC HEATING APPLIANCES -
21、 UL 499 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL PERFORMANCE 32 General 58 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 .6
22、9 36.3 Charcoal ignitors .69 36.4 Stock-tank de-icers, stock waterers, and the like .69 36.5 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 tra
23、ys .70 36.10 Water heaters of the side-arm type 70 36.11 Refrigerator defrosters .71 36.12 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 Tes
24、t .75 39 Mechanical Endurance Test 76 40 Resistance to Impact 77 41 Overow Test 80 42 Abnormal 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 igni
25、tors .83 42.7 Stock-tank de-icers, stock waterers, and the like .83 42.8 Warming trays .84 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
26、.85 42.17 Vaporizers of the resistance-wire type .86 42.18 Heating appliances employing fans 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
27、 for thermostats 88 43.4 Limited short circuit test for motor-control devices 89 44 Strain Relief Test .89 45 Push-Back Relief Test 90 NOVEMBER 7, 2014 ELECTRIC HEATING APPLIANCES - UL 499 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 46
28、Test for Permanence of Cord Tag for Outdoor-Use Heating Appliances with Power-Supply Cords 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 Prod
29、uction-Line Dielectric Voltage-Withstand Test 93 51 Polarization and Grounding Continuity 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 ELECTRO
30、DE-TYPE HEATING APPLIANCES 55 Scope 107 56 General 107 57 Construction 107 58 Operation Test 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
31、 General 113 66 Temperature Test 113 67 Overload Tests 114 STEAM-BATH GENERATORS 68 Scope 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 circ
32、uits .117 70.6 Drain valve .118 NOVEMBER 7, 2014 ELECTRIC HEATING APPLIANCES - UL 499 5UL 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 a
33、gainst injury to persons .119 71 Performance 119 71.1 General 119 71.2 Power input test 119 71.3 Leakage current 119 71.4 Test of insulation resistance and leakage current as a result of moisture .119 71.5 Normal temperature test .119 71.6 Abnormal operation general 120 71.7 Abnormal operation no wa
34、ter .120 72 Markings .120 73 Instructions .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 Constru
35、ction 127 78 Insulation .128 79 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 M
36、ETAL SHEATHED HEATING ELEMENTS COMPONENTS MARKING 86 Details .133 DIRECT PLUG-IN HEATING APPLIANCES 87 General 134 88 Construction 134 89 Performance 139 90 Markings .139 APPLIANCES GENERATING ULTRAVIOLET (UV) RADIATION NOVEMBER 7, 2014 ELECTRIC HEATING APPLIANCES - UL 499 6UL COPYRIGHTED MATERIAL N
37、OT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 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 SOA
38、P KETTLES 92 Additional Requirements 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) Employin
39、g Thin Film Resistance Heating 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 Accessorie
40、s .SA1 SA5 Heat Regulation .SA1 SA6 Dimensions and Tolerances .SA2 SA7 Finish SA2 SA8 Workmanship .SA2 REGULATORY REQUIREMENTS SA9 Recovered Materials .SA2 PERFORMANCE SA10 Temperature and Air Flow Tests .SA2 SA10.1 General .SA2 NOVEMBER 7, 2014 ELECTRIC HEATING APPLIANCES - UL 499 7UL COPYRIGHTED M
41、ATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 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) S
42、A7 SA13.2 Ordering data SA7 SA13.3 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
43、temperature test .SB2 SB4.4 Charger 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 NOVEMBER 7, 2014 ELEC
44、TRIC HEATING APPLIANCES - UL 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 Ele
45、ctrical Code (NEC), ANSI/NFPA 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 th
46、at directly or indirectly generates 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 Steam generatin
47、g 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 multi-vessel uni
48、t 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 An adhesive g
49、un 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 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
