1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 197 Commercial Electric Cooking AppliancesUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR
2、 FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Commercial Electric Cooking Appliances, UL 197 Tenth Edition, Dated March 17, 2010 Summary of Topics This revision to UL 197 is being issued for a formatting change to the effective date in Section 33 and an
3、editorial change to 132.2.1; and to add the Door Opening Test, 5A.9, 65A, and 65B to the standard. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. Changes in requirements are marked with a vertical line in the mar
4、gin and are followed by an effective date note indicating the date of publication or the date on which the changed requirement becomes effective. The new requirements are substantially in accordance with Proposal(s) on this subject dated May 2, 2014. All rights reserved. No part of this publication
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7、his 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 electronic versions of ULs Standards for Safe
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9、e 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 have been revised and that have a fu
10、ture effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. SEPTEMBER 17, 2014 UL 197 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SEPTEMBER 17, 2014 UL 197 tr2 No Text on This PageUL COPYR
11、IGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARCH 17, 2010 (Title Page Reprinted: September 17, 2014) 1 UL 197 Standard for Commercial Electric Cooking Appliances First Edition January, 1952 Second Edition October, 1960 Third Edition June, 1972
12、Fourth Edition November, 1974 Fifth Edition April, 1978 Sixth Edition March, 1982 Seventh Edition July, 1987 Eighth Edition June, 1993 Ninth Edition March, 2003 Tenth Edition March 17, 2010 This ANSI/UL Standard for Safety consists of the Tenth edition including revisions through September 17, 2014.
13、 The most recent designation of ANSI/UL 197 as an American National Standard (ANSI) occurred on September 17, 2014. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date information. The Department of Defense (DoD) has adopted UL 197 on Januar
14、y 28, 1976. 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 be submitted via a Proposal Request in ULs On-Line Collaborative S
15、tandards 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 rights regarding those Standards shall remain the sole and exclusiv
16、e property of UL. COPYRIGHT 2014 UNDERWRITERS LABORATORIES INC. ANSI/UL 197-2014UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SEPTEMBER 17, 2014 COMMERCIAL ELECTRIC COOKING APPLIANCES - UL 197 2 No Text on This PageUL COPYRIGHTED MATERIAL
17、NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS PART 1 ALL APPLIANCES INTRODUCTION 1 Scope 10 2 Glossary 11 3 Components 14 4 Units of Measurement .14A 5 Undated References 14A CONSTRUCTION 5A General 14A 5A.2 Ground-fault, arc-fault, and leakage current d
18、etectors/interrupters 14B 5A.3 Surge protective device .14C 5A.4 Terminal blocks 14C 5A.5 Quick-connects .14D 5A.6 Insulating tape and tubing .14D 5A.7 Programmable controllers 14D 5A.8 Fabricated polymeric parts .14D 5A.9 Door latch release 15 6 Accessories .15 7 Mechanical Assembly 16 7.1 General
19、16 7.2 Mounting of components .16 7.3 Shipping .17 8 Electrical and Fire Enclosures .18 8.1 General 18 8.2 Metallic enclosures 20 8.3 Nonmetallic enclosures .21 8.4 Fire containment general .21 8.5 Fire containment enclosures for overcurrent protective device .25 8.6 Grease troughs and pans 25 9 Out
20、er Cabinetry/ Enclosures 26 10 Accessibility of Live Parts 27 10.1 General .27 10.2 Open wire heating elements .32 10.3 Lamps, quartz enclosed heating elements, and similar components 32 10.4 Fuses, circuit breakers, supplementary protectors, and manually reset controls 33 11 Guarding of Moving Part
21、s 36 11.1 General .36 11.2 Materials 37 12 Protection Against Injury to Persons 37 13 Protection of Service Personnel 37 14 Interlocks 40 14.1 General .40 14.2 Moving parts .41 15 Protection Against Corrosion .41 16 Electrical Supply Connections for Permanently Connected Appliances 41 SEPTEMBER 17,
22、2014 COMMERCIAL ELECTRIC COOKING APPLIANCES - UL 197 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 16.1 General .41 16.2 Wiring compartment 42 16.3 Field-wiring terminals and leads 44 16.4 Grounded supply conductor .46 16.5 Equipment grou
23、nding connection .47 17 Electrical Supply Connections for Cord-Connected Appliances .48 17.1 General .48 17.2 Strain relief 50 17.3 Bushings .50A 17.4 Grounding .50B 17.5 Multiple power supply cords .53 18 Bonding for Grounding 55 19 Polarity 57 20 Current-Carrying Parts 57 21 Attachment-Plug Recept
24、acles 58 22 Internal Wiring 58 22.1 General 58 22.2 Insulation 59 22.3 Protection .59 22.4 Wiring in circuits involving a risk of re or electric shock 59 22.5 Splices and connections 60 23 Heating Elements .60B 24 Electrical Insulation .61 24.6 Film-coated wire (magnet wire) 64 25 Thermal Insulation
25、 64 26 Motors and Transformers .64A 26.1 Motors in circuits involving a risk of re or electric shock .64A 26.2 Motor protection 64A 26.3 Transformers 65 27 Temperature Controls .65 28 Short-Circuit and Ground-Fault Protection .67 28.1 General .67 28.2 Supplementary-type overcurrent protective device
26、s used as short-circuit and ground-fault protection .70 28.3 Protection for circuits including specic components 71 28.4 Protection for wiring located outside the enclosure .73 28.5 Protection for high-voltage control circuits conductors .74 29 Auxiliary-Circuit Terminals .75 30 Capacitors .75 31 Sw
27、itching Devices 76 31.1 General .76 31.2 Electrical ratings .77 31.3 Guarding 78 31.4 Specic applications .78 32 Components Containing Liquid Metal 79 33 Lampholders .79 33A Light Sources and Associated Components .79 34 Secondary Circuits 81 34.1 General .81 34.2 Evaluation of the different types o
28、f secondary circuits .83 34.3 Class 2 circuits .85 34.4 Limited voltage/current circuits .85 SEPTEMBER 17, 2014 COMMERCIAL ELECTRIC COOKING APPLIANCES - UL 197 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 34.5 Limited voltage circuit req
29、uirements 87 34.6 Limited energy circuits 87 34.7 Limiting impedance circuits 88 34.8 Safety extra-low voltage circuits 89 35 Lithium Battery Circuits 89 36 Isolating Devices .89 37 Electrical Spacings 90 37.1 General .90 37.2 Secondary circuits 93 38 Insulating Barriers 94 39 Clearance and Creepage
30、 Distances .96 40 Separation of Circuits .97 JUNE 24, 2011 COMMERCIAL ELECTRIC COOKING APPLIANCES - UL 197 4AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JUNE 24, 2011 COMMERCIAL ELECTRIC COOKING APPLIANCES - UL 197 4B No Text on This Pag
31、eUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 41 Parts Subject to Pressure 98 41.1 General .98 41.2 Pressure relief means .101 41.3 Pressure relief devices .101 41.4 Pressure Controls .102 42 Stability .103 43 Surface Mounted Appliances 1
32、03 43.1 General 103 43.2 Wall mounting 103 43.3 Under cabinet units 104 44 Gas-Tube Signs .105 PERFORMANCE COMPLETE APPLIANCE 45 General 105 46 Leakage Current Test 106 47 Power Input Test 110 48 Input Averaging Test .111 49 Short-Circuit Tests .111 50 Normal Temperature Test 112 50.1 General 112 50
33、.2 Surface temperatures 115 50.3 Test equipment .116 50.4 Procedure 117 50.5 Normal test conditions .120 51 Dielectric Voltage-Withstand Test 125 51.1 General 125 51.2 Primary circuits .126 51.3 Secondary Circuits 126 51.4 Transformers .127 52 Resistance to Moisture Test 128 53 Insulation Resistance
34、 Test 129 54 Grounding and Bonding Test 130 54.1 Grounding 130 54.2 Bonding 131 55 Stability .131 56 Abnormal Heating Test .132 56.1 General 132 56.2 Procedure 134 56.3 Test conditions disabled thermostat 134 56.4 Test conditions locked rotor .135 56.5 Stalled fan test control compartment fan .135 5
35、6.6 Abnormal dry operation test 136 56.7 Test conditions specic appliances 137 57 Breakdown of Components Test .138 58 Wiring Endurance Test .139 59 Cord Endurance Test Hand-held Appliances 139 60 Strain Relief Test 142 61 Push-Back Relief 142 62 Thermal Shock Test Glass/Ceramic Cooking Surfaces .14
36、2 63 Strength of Enclosures, Frames, and Guards Test .142 63.1 General 142 63.2 Static force test .143 MARCH 17, 2010 COMMERCIAL ELECTRIC COOKING APPLIANCES - UL 197 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 63.3 Impact test frames, g
37、uards, and metal enclosures .143 63.4 Impact test glass/ceramic-cooking surfaces .143 63.5 Impact exposed glass parts other than glass/ceramic cooking surfaces 144 64 Mounting Means Test 145 65 Reservoir Tests .145 65.1 General 145 65.2 Overow test for automatic ll appliances 146 65.3 Overow test fo
38、r manual ll appliances 146 65.4 Removable container test 146 65A Door Latch Release Test 146A 65B Door Opening Test 146A PERFORMANCE COMPONENTS 66 General 147 67 Transformer Burnout Test 147 68 Endurance Test for Temperature-Regulating Controls 147 69 Endurance Test for Interlock Switches .148 70 Mo
39、tor Switch Overload Test .148 71 Components Containing Liquid Metal Test 148 72 Printed-Wiring Board Abnormal Operation Test 148 73 Secondary Circuits Tests .150 73.1 General 150 73.2 Maximum voltage .150 73.3 Maximum current test for inherently limited circuits 150 73.4 Limited power point determin
40、ation test .151 73.5 Component failure .152 73.6 Maximum power test 153 73.7 Power dissipation test .154 74 Parts Subject to Contact with Oil or Other Liquids .154 75 Hydrostatic Pressure Test 156 76 Start-To-Discharge Test 156 77 Relief Device Maximum Pressure Test .156 78 Pressure Controls Enduran
41、ce Test .157 79 Permanence of Marking Test 157 79.1 Labels .157 79.2 Cord tags 158 MANUFACTURING AND PRODUCTION TESTS 80 Dielectric Voltage-Withstand 159 81 Grounding Continuity .161 82 Pressure Vessels and Parts Subject to Pressure 161 APPLIANCE RATINGS 83 Electrical Ratings 161 SEPTEMBER 17, 2014
42、COMMERCIAL ELECTRIC COOKING APPLIANCES - UL 197 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARKING 84 General 163 85 Visible to Operator .165 86 Visible After Installation .167 87 Graphical Symbols and Supplemental Markings .170 87.1 N
43、o user-serviceable parts compartment warning 170 SEPTEMBER 17, 2014 COMMERCIAL ELECTRIC COOKING APPLIANCES - UL 197 6AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SEPTEMBER 17, 2014 COMMERCIAL ELECTRIC COOKING APPLIANCES - UL 197 6B No Te
44、xt on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 87.2 Graphical symbol size and color 172 87.3 Supplemental marking size and color 172 87.4 Size of outlines and symbols .173 87.5 Explanation of graphical symbols in the operatin
45、g instructions 174 88 Visible During Installation and Examination .176 89 Visible During Servicing Operations 178 90 Nonpermanent Marking .180 INSTRUCTIONS 91 Manufacturers Literature .180 PART 2 COMMERCIAL ELECTRIC COOKING APPLIANCES FOR MARINE USE 92 Scope 182 93 Cleaning and Maintenance 182 94 Hi
46、nges and Locking Devices 183 95 Protection of Personnel .183 96 Securing of Appliances .184 97 Disconnecting Means 184 98 Performance 184 98.1 General 184 98.2 Vibration test .184 98.3 Shock test 185 99 Marking 185 PART 3 DEEP-FAT FRYERS AND RELATED EQUIPMENT INTRODUCTION 100 Scope .186 CONSTRUCTION
47、 101 Temperature Controls .186 102 Switching Devices 187 103 Stability .187 PERFORMANCE 104 Normal Temperature Test .187 105 Disabled Temperature Regulating Control Oil Temperature Test 188 106 Abnormal Heating Test 188 MANUFACTURING AND PRODUCTION TESTS 107 General .189 108 Limiting Controls .189 M
48、ARCH 17, 2010 COMMERCIAL ELECTRIC COOKING APPLIANCES - UL 197 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARKINGS 109 General .190 PART 4 COMMERCIAL ELECTRIC COOKING APPLIANCES WITH SEMICONDUCTOR HEATING ELEMENTS INTRODUCTION 110 Scope
49、 .190 CONSTRUCTION 111 Heating Element 191 112 Switches 191 PERFORMANCE 113 General .191 114 Input Test .192 115 Normal Temperature Test .192 116 Low Ambient Temperature Starting Test .193 117 Abnormal Heating Test Restricted Air Flow 193 118 Endurance Test 193 119 Input Current Test 194 120 Overload and Endurance Test .194 RATINGS 121 Electrical Ratings .195 PART 5 DOUBLE INSULATION INTRODUCTION 122 Scope .195 CONSTRUCTION AND PERFORMANCE 123 General .195 MANU
