1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1278 Movable and Wall- or Ceiling-Hung Electric Room Heaters STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL C
2、OPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Movable and Wall- or Ceiling-Hung Electric Room Heaters, UL 1278 Fourth Edition, Dated March 21, 2014 Summary of Topics This revision of ANSI/UL 1278 includes the followi
3、ng changes in requirements: Connected (Smart Enabled) Heaters Product Enclosures Cautionary Mark The new and revised requirements are substantially in accordance with Proposal(s) on this subject dated June 9, 2017 and August 4, 2017. Text that has been changed in any manner or impacted by ULs electr
4、onic publishing system is marked with a vertical line in the margin. All rights reserved. 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.
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6、ng 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, 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 p
7、aid for this Standard, regardless of the form of the claim. Users of the electronic 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
8、 error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. SEPTEMBER 14, 2017 UL 1278 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SEPTEMBER 14, 2017 UL 1278 tr2 No Text on This
9、PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARCH 21, 2014 (Title Page Reprinted: September 14, 2017) 1 UL 1278 Standard for Movable and Wall- or Ceiling-Hung Electric Room Heaters First Edition September, 1992 Second Edition Septemb
10、er, 1994 Third Edition June, 2000 Fourth Edition March 21, 2014 This ANSI/UL Standard for Safety consists of the Fourth Edition including revisions through September 14, 2017. The most recent designation of ANSI/UL 1278 as an American National Standard (ANSI) occurred on September 14, 2017. ANSI app
11、roval for a standard does not include the Cover Page, Transmittal Pages, and Title Page. 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
12、(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
13、 2017 UNDERWRITERS LABORATORIES INC. ANSI/UL 1278-2017UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL DECEMBER 14, 2016 MOVABLE AND WALL- OR CEILING-HUNG ELECTRIC ROOM HEATERS - UL 1278 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHO
14、RIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .9 2 General 9 2.1 General .9 2.2 Terminology .9 3 Glossary .9 4 Components .10B 4.1 General .10B 4.2 Attachment plugs, receptacles, connectors, and terminals 13 4.3 Controls 14 4.4 Internal wirin
15、g .16 4.5 Film-coated wire (magnet wire) 17 4.6 Printed wiring boards 17 4.7 Semiconductors and small electronic components .17 4.8 Supplemental insulation, insulating bushings, and assembly aids 18 4.9 Switches .19 4.10 Transformers 20 5 Units of Measurement 20 6 References 20 CONSTRUCTION 7 Enclos
16、ure .20 8 Accessibility of Live Parts .23 9 Accessibility of Moving Parts 31 10 Guarding of Heating Elements 32 10.1 General .32 10.2 Panel-type heaters .36 11 Parts Subject to Pressure 37 12 Polymeric Materials .39 13 Heat Transfer Fluids 39 14 Assembly of Components 39 15 Protection Against Corros
17、ion .40 16 Supply Connections .40 17 Special Protection Devices .45 18 Static Load Test For Hanging Means 45 19 Current-Carrying Parts 46 20 Internal Wiring 46 20.1 General .46 20.2 Protection of wiring .47 20.3 Wire connectors 48 20.4 Separation of circuits .49 21 Heating Elements .49 22 Heating El
18、ement Supports .50 23 Electrical Insulation .50 24 Thermal Insulation 50 25 Motors .51 26 Motor Overload Protection .52 27 Overcurrent Protection 53 DECEMBER 14, 2016 MOVABLE AND WALL- OR CEILING-HUNG ELECTRIC ROOM HEATERS - UL 1278 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR
19、 DISTRIBUTION WITHOUT PERMISSION FROM UL 27.1 General .53 27.2 Heating elements 54 27.3 Motors and motor-circuits .54 27.4 Tapped high-voltage control circuits 54 27.5 High-voltage transformers .56 27.6 Low-voltage transformers 57 28 Secondary Circuits 57 28.1 General .57 28.2 Limited-energy-seconda
20、ry circuits 58 29 Temperature Limiting Means .59 30 Alarms 60 31 Lampholders .61 32 Pilot Lights .61 33 Switches .62 34 Automatic Controls and Control Circuits .64 34.1 General .64 34.2 Terminals and actuating members of safety and temperature limiting controls .65 35 Spacings 66 36 Grounding .67 PE
21、RFORMANCE 37 General 68 38 Power Input Test .68 39 Leakage Current Test .68 40 Normal Temperature Tests .71 40.1 General .71 40.2 Temperature controls .75 40.3 Specied test conditions 76 41 Alarm Device Endurance Test 77 42 Abnormal Operation Tests .77 42.1 General .77 42.2 Overvoltage test .78 42.3
22、 Stalled-fan test .79 42.4 Tip-over test .79 42.5 Vertical-wall test 80 42.6 Terry cloth drape test .81 42.7 Terry cloth band drape test 81 42.8 Wall-hung heaters 83 42.9 Abnormal ambient test 86 42.10 Motor overload and stalled motor motors protected by a remote protective device .87 42.11 Impedanc
23、e-protected motors .88 42.12 Motor connected across heating elements 89 43 Endurance Test 90 43.1 Temperature Control 90 43.2 Electrical wiring 90 44 Short Circuit Tests 91 45 Overload Test High-Voltage Transformers .93 46 Burnout Test High-Voltage Transformers .93 47 Component Failure Test .94 48 D
24、ielectric Voltage-Withstand Test .94 49 Insulation Resistance Test .95 50 Water Spray Test .95 DECEMBER 14, 2016 MOVABLE AND WALL- OR CEILING-HUNG ELECTRIC ROOM HEATERS - UL 1278 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 51 Stability
25、of Movable Heaters .98 52 Element Support Impact Tests .98 53 Drop Test 99 54 Test for Permanence of Cord Tag .101 54.1 General 101 54.2 Test conditions .101 54.3 Test method 101 55 Protection Against Injury to Persons Test .102 56 Knob Securement Test .103 57 Strength of Adjustment Stop Test 103 58
26、 Hydrostatic Test .104 59 Strain Relief Test 104 60 Permanence of Marking 105 MANUFACTURING AND PRODUCTION TESTS 61 Production-Line Dielectric Voltage-Withstand 105 62 Production-Line Grounding Continuity 107 63 Production-Line Tip Over .107 64 Production Leakage Test (Fluid-Filled Heaters) .107 65
27、Hydrostatic Test .107 RATINGS 66 Details .108 MARKINGS 67 Details .108 68 Instructions for Use and Care .112 68.1 General 112 68.2 Important instructions 113 68.3 User instructions 115 68.4 Grounding instructions .116 68.5 Heater carton information 116 69 Cord Tag Markings 117 SUPPLEMENT SA - CERTAI
28、N RADIANT ROOM HEATERS INTRODUCTION SA1 Scope SA1 CONSTRUCTION SA2 Enclosure .SA1 SA2.1 General SA1 SA2.2 Guards SA3 SA3 Stability .SA3 SA4 Supply Connections SA3 DECEMBER 14, 2016 MOVABLE AND WALL- OR CEILING-HUNG ELECTRIC ROOM HEATERS - UL 1278 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER R
29、EPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SA5 Internal Wiring .SA4 SA6 Automatic Controls and Control Circuits SA4 SA7 Spacings .SA5 PERFORMANCE SA8 General SA6 SA9 Normal Temperature Test SA6 SA9.1 General SA6 SA9.2 Normal temperature .SA7 SA10 Padded Surface and Blanketing Test .SA8 S
30、A11 Curtain Drape Test .SA9 SA12 Shredded Paper Test .SA9 MANUFACTURING AND PRODUCTION TESTS SA13 General .SA9 MARKING SA14 Details .SA11 SUPPLEMENT SB - HEATERS INTENDED FOR USE IN BATHROOMS, LAUNDRY AREAS AND SIMILAR INDOOR LOCATIONS INTRODUCTION SB1 Scope SB1 CONSTRUCTION SB2 Enclosure .SB1 SB3 C
31、urrent-Carrying Parts .SB1 SB4 Thermal Insulation .SB2 SB5 Immersion Detection Circuit Interrupters (IDCIS) SB2 SB6 Ground Fault Circuit Interrupters (GFCIS) SB3 SB7 Other Protective Devices .SB3 SB8 Switches SB3 SB9 Grounding SB3 PERFORMANCE SB10 Immersion Leakage Current Tests SB4 SB10.1 General .
32、SB4 SB10.2 Rising water immersion .SB5 SB10.3 Drop immersion SB5 SB10.4 Tip-over immersion test .SB5 SB10.5 Saturation immersion test .SB5 SB11 Dew Point Test .SB6 SB12 Splash Test SB6 DECEMBER 14, 2016 MOVABLE AND WALL- OR CEILING-HUNG ELECTRIC ROOM HEATERS - UL 1278 6UL COPYRIGHTED MATERIAL NOT AU
33、THORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MANUFACTURING AND PRODUCTION TESTS SB13 Production Line Trip-Time Measurement SB6 SB14 Test Button Activation .SB7 MARKINGS SB15 Details SB7 SB16 Instructions for Use and Care SB7 SUPPLEMENT SC - MOVABLE ELECTRIC ROOM HEATE
34、RS WITH SEMICONDUCTOR HEATING ELEMENTS INTRODUCTION SC1 Scope SC1 CONSTRUCTION SC2 Heating Element SC1 SC3 Fan Speed Control, Semiconductor Type .SC1 SC4 Switches .SC1 PERFORMANCE SC5 General SC2 SC6 Input Test SC2 SC7 Normal Temperature Test SC2 SC8 Low Ambient Temperature Starting Test .SC2 SC9 Re
35、stricted Inlet, Abnormal Operation Test SC3 SC10 DC Offset Voltage Temperature Test .SC3 SC11 Fan Speed Controls, Abnormal Operation Tests .SC4 SC12 Endurance Test SC5 SC13 Input Current Test SC5 SC14 Overload and Endurance Test .SC6 SUPPLEMENT SD - DIRECT PLUG-IN HEATERS INTRODUCTION SD1 Scope SD1
36、CONSTRUCTION SD2 General SD1 SD3 Enclosure SD5 SD4 Input Connections .SD5 DECEMBER 14, 2016 MOVABLE AND WALL- OR CEILING-HUNG ELECTRIC ROOM HEATERS - UL 1278 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SD5 Grounding SD5 SD6 Blade Secure
37、ness Test SD6 SD7 Security of Input Contacts Test SD6 SD8 Positioning SD6 SD9 Abuse Tests General .SD6 SD10 Abuse Tests Impact Tests .SD7 SD11 Abuse Tests Rod Pressure SD7 SD12 Abuse Tests Resistance to Crushing SD7 SD13 Abuse Tests Switch Retainment SD7 SD14 Abuse Tests Rotating Plug Assembly Torqu
38、e Test SD8 SD15 Abuse Tests Static Load-Retainer Plate .SD8 SD16 Marking .SD8 SD17 Limitations .SD8 SD18 Abnormal Operation Tests .SD8 SUPPLEMENT SE - CONNECTED HEATERS INTRODUCTION SE1 Scope SE1 CONSTRUCTION SE2 General SE1 PERFORMANCE SE3 Movement Detection Test, Moveable Heaters .SE3 SE4 Ambient
39、Temperature Test .SE4 SE5 Enabled Timeout Test, Initiating a Heating Function .SE4 SE6 Enabled Timeout Test, Increasing a Temperature Setting .SE5 SE7 Resistance to Electro Magnetic Phenomena (Immunity) SE5 MARKINGS SE8 Details .SE6 SE9 Instructions .SE6 SEPTEMBER 14, 2017 MOVABLE AND WALL- OR CEILI
40、NG-HUNG ELECTRIC ROOM HEATERS - UL 1278 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover movable and wall- or ceiling-hung electric room-heating equipment rated 600 volts or less to be employ
41、ed in ordinary locations in accordance with the National Electrical Code, ANSI/NFPA 70. 1.2 These requirements do not cover xed heaters, location-dedicated heaters, baseboard heaters, duct heaters, central-heating furnaces, fan-coil units, panel- or cable-type radiant-heating equipment, electric boi
42、lers, or any other electric heating equipment or appliances that are covered in or as a part of separate, individual requirements. 2 General 2.1 General 2.1.1 If the operation of a heater involves the generation and conning under pressure of steam or other gas, consideration is to be given to the po
43、ssibility of risk of explosion incident to such operation. This applies in the case of an appliance having immersed electrodes, if the electrolysis of water may result in the accumulation of oxygen and hydrogen. The appliance is not acceptable unless its strength is such that it will withstand any r
44、isk of explosion that may be involved. 2.2 Terminology 2.2.1 Unless indicated otherwise, all voltage and current values mentioned in this standard are rms. 3 Glossary 3.1 For the purposes of this standard the following denitions apply. 3.2 ANGLE OF CRITICAL BALANCE The minimum angle through which a
45、heater must be tipped to cause it to tip over due solely to the force of gravity. 3.3 APPLIANCE COUPLER A single-outlet, female contact device for attachment to a exible cord as part of a detachable power-supply cord to be connected to an appliance inlet (motor attachment plug). 3.4 APPLIANCE INLET
46、(Motor Attachment Plug) A male contact device mounted on an end product appliance to provide an integral blade conguration for the connection of an appliance coupler or cord connector. 3.5 APPLIANCE (FLATIRON) PLUG An appliance coupler type of device having a cord guard and a slot conguration specie
47、d for use with heating or cooking appliances. 3.6 CHARRING WITH CROSSCHECKING Manifestation of ignition by separation of wood bers in the direction with the grain and also in the direction across the grain. 3.7 COMMERCIAL/INDUSTRIAL HEATER Any heater that is either: a) Rated 2 kilowatts or greater a
48、nd marked as a commercial/industrial heater in accordance with 67.10, MARCH 21, 2014 MOVABLE AND WALL- OR CEILING-HUNG ELECTRIC ROOM HEATERS - UL 1278 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL b) Rated greater than 250 volts, c) A pol
49、yphase heater, or d) Rated greater than 6 kilowatts. 3.8 COMPONENT A device or fabricated part of the appliance covered by the scope of a safety standard dedicated to the purpose. When incorporated in an appliance, equipment otherwise typically eld installed (e.g. luminaire) is considered to be a component. Unless otherwise specied, materials that compose a device or fabricated part, such as thermoplastic or copper, are not considered components. 3.9 CONTROL CIRCUIT A circuit
