1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1951 Electric Plumbing AccessoriesUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER
2、 REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Electric Plumbing Accessories, UL 1951 Second Edition, Dated July 22, 2011 SUMMARY OF TOPICS The revisions dated March 14, 2014 include the following changes in requirements and reect the latest ANSI approval date fo
3、r UL 1951: 1. Revision To The Requirements Of The Scope To Include Toilets And Commercial Pedicure Spas 2. Revision To Leakage Current Test Requirements The new/revised requirements are substantially in accordance with Proposal(s) on this subject dated October 18, 2013 and January 24, 2014. All righ
4、ts 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. UL provides this Standard as is without warranty of any kind, either express
5、ed or 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 ou
6、t 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 paid for this Standard, regardless of the form of the claim. Users of the elec
7、tronic 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 Stand
8、ard 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
9、that have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. MARCH 14, 2014 UL 1951 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARCH 14, 2014 UL 19
10、51 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL July 22, 2011 (Title Page Reprinted: March 14, 2014) 1 UL 1951 Standard for Electric Plumbing Accessories First Edition April, 1994 Second Edition July 22, 2011 This
11、ANSI/UL Standard for Safety consists of the Second Edition including revisions through March 14, 2014. The most recent designation of ANSI/UL 1951 as an American National Standard (ANSI) occurred on March 14, 2014. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Titl
12、e Page, or effective date information. 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 (CSDS) at http:/. ULs Standards for Safety are cop
13、yrighted 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 2014 UNDERWRITERS LABORATORIES INC. ANSI/UL 1951-2
14、014UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARCH 14, 2014 ELECTRIC PLUMBING ACCESSORIES - UL 1951 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTEN
15、TS PART 1 ALL EQUIPMENT INTRODUCTION 1 Scope .5 2 Units of Measurement .5 3 Undated References 5 4 Glossary .5 CONSTRUCTION 5 Components 7 5.1 General .7 5.2 Attachment plugs and receptacles 9 5.3 Batteries and battery chargers 10 5.4 Capacitors and lters 10 5.5 Controls 11 5.6 Cords, cables, and in
16、ternal wiring .14 5.7 Ground-fault, arc-fault, and leakage current detectors/interrupters .15 5.8 Heaters, heating elements and pads .15 5.9 Insulation systems .15 5.10 Light sources and associated components 16 5.11 Overcurrent protection 16 5.12 Power supplies .17 5.13 Printed wiring boards .17 5.
17、14 Quick-connect wire connectors .17 5.15 Semiconductors and small electronic components 18 5.16 Supplemental insulation, insulating bushings, and assembly aids .18 5.17 Switches 19 5.18 Terminal blocks 20 5.19 Transformers 20 5.20 Valves (electrically operated) and solenoids .21 5.21 Wire connector
18、s 21 6 Frame and Enclosure 21 6.1 General 21 6.2 Barriers 22 6.3 Doors and covers .23 6.4 Cast metal 23 6.5 Sheet metal 23 6.6 Nonmetallic enclosures .27 6.7 Outdoor-use enclosures 27 7 Mounting 27 7.1 Permanently connected units .27 7.2 Cord-connected units 27 8 Protection Against Corrosion 27 9 Ac
19、cessibility of Uninsulated Live Parts, Film-Coated Wire, and Moving Parts 28 10 Field Connections .33 10.1 General .33 10.2 Equipment permanently connected electrically .34 MARCH 14, 2014 ELECTRIC PLUMBING ACCESSORIES - UL 1951 2AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DIS
20、TRIBUTION WITHOUT PERMISSION FROM UL 10.3 Equipment cord connected 35 10.4 Strain relief 36 10.5 Bushing .36 11 Adhesives Used to Secure Parts .36 12 Mechanical Assembly .37 13 Current-Carrying Parts 38 14 Insulating Material 38 15 Internal Wiring 38 15.1 Mechanical protection .38 15.2 Splices and c
21、onnections 39 16 Separation of Circuits .40 16.1 General .40 17 Grounding and Bonding .40 17.1 General .40 17.2 Grounding means 40 17.3 Terminals and leads 41 17.4 Grounding identication .41 17.5 Bonding .42 18 Lampholders .43 19 Motors .43 20 Overcurrent- or Overload-Protective Devices .44 20.1 Gen
22、eral .44 21 Capacitors .45 22 Switches and Controls .45 23 Controls End Product Test Parameters 46 23.1 General .46 23.2 Auxiliary controls .46 23.3 Operating controls (regulating controls) .46 23.4 Protective controls (limiting controls) 48 23.5 Controls using a temperature sensing device 49 24 Sec
23、ondary Circuits 50 24.1 General .50 25 Diaphragms, Gaskets, and Seals .50 26 Spacings 50 PROTECTION AGAINST INJURY TO PERSONS 27 General 52 28 Sharp Edges .53 29 Enclosures and Guards 53 30 Materials .54 31 Rotating or Moving Members .54 32 Parts Subject to Pressure 55 33 Pressure-Relief Devices .56
24、 34 Switches, Controls, and Interlocks 58 35 Printed-Wiring Boards .59 36 Marking 59 37 Permanence of Marking .60 MARCH 14, 2014 ELECTRIC PLUMBING ACCESSORIES - UL 1951 2BUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL PERFORMANCE 38 General
25、 61 39 Power Input Test .61 40 Leakage Current Test .62 41 Leakage Current Following Humidity Conditioning Test 64 42 Insulation Resistance Following Humidity Conditioning Test 65 43 Continuity of Grounding Circuit Test .65 44 Starting-Current Test 66 45 Temperature Test .66 46 Dielectric Voltage-Wi
26、thstand Test .70 47 Rain Test 71 48 Strain Relief Test .71 49 Accelerated Aging Test 74 50 Overload Test on Switches and Controls 74 51 Operational Test 75 52 Radiation Test 75 53 Abnormal Operation Test 75 53.1 General .75 53.2 Electronic components 76 MANUFACTURING AND PRODUCTION TESTS 54 Dielectr
27、ic Voltage-Withstand Test .76 55 Grounding-Continuity Test .78 RATINGS 56 Details .78 MARKING 57 Details .79 58 Cautionary Markings 80 PART II SPECIFIC EQUIPMENT COMMERCIAL PEDICURE SPAS 59 General 81 60 Scope .81 61 Construction .81 61.1 General .81 62 Performance .82 62.1 Temperature Test 82 63 Ma
28、rkings .82 63.1 Details 82 MARCH 14, 2014 ELECTRIC PLUMBING ACCESSORIES - UL 1951 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL TOILETS WITH ELECTRIC FLUSHING FEATURES 64 General 83 65 Construction .83 65.1 General .83 66 Performance .83
29、66.1 Temperature test .83 67 Markings .83 67.1 Details .83 MARCH 14, 2014 ELECTRIC PLUMBING ACCESSORIES - UL 1951 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL PART 1 ALL EQUIPMENT INTRODUCTION 1 Scope 1.1 These requirements cover equipme
30、nt connected to or used with plumbing in commercial or household locations. Examples of equipment covered by these requirements are irrigation equipment, sprinkler controls, pedicure spas, water controls located in kitchens and bathrooms, electric faucets, toilets and toilet ushing systems. All equi
31、pment is intended for installation and use in accordance with the National Electrical Code, NFPA 70, and is rated 600 volts or less. 1.1 revised March 14, 2014 1.2 These requirements do not cover pumps, dishwashers, washing machines, or other equipment connected to plumbing that is covered by indivi
32、dual requirements. 1.3 These requirements do not cover refrigeration systems or controls that regulate water temperature, or equipment for use in hazardous locations as dened in the National Electrical Code, NFPA 70. 2 Units of Measurement 2.1 Values stated without parentheses are the requirement. V
33、alues in parentheses are explanatory or approximate information. 2.2 Unless indicated otherwise, all voltage and current values are rms and wattage values are average power. 3 Undated References 3.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be i
34、nterpreted as referring to the latest edition of that code or standard. 4 Glossary 4.1 For the purpose of this standard the following denitions apply. 4.2 FIELD-WIRING TERMINAL A terminal to which power supply (including equipment grounding) or control connection will be made in the eld when the pro
35、duct is installed as intended. If the wire, to be connected to the terminal, is provided as part of the unit and a pressure terminal, connector, soldering lug, soldered loop, crimped eyelet, or other means for making the connection is factory-assembled to the wire, it is not a eld wiring terminal. 4
36、.3 CONTROLS, AUTOMATIC ACTION A device in which the transmission and operation of at least one function are produced by initiation which is not the result of manual actuation. 4.4 CONTROL, AUXILIARY A device that provides a functional utility but is not relied on as an operational or protective cont
37、rol. The failure of an auxiliary control generally does not cause the operation of a protective control. An example of an auxiliary control is a safety related control where other controls are being relied upon during testing for the safety function. The auxiliary control might more likely function
38、in actual use but for test purposes, it is bypassed. MARCH 14, 2014 ELECTRIC PLUMBING ACCESSORIES - UL 1951 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 4.5 CONTROL, MANUAL A device that requires direct human interaction to activate or t
39、est the control. 4.6 CONTROL, OPERATING A device that starts or regulates the operation of an appliance during normal operation. The failure of an operational control generally causes the operation of a protective control. An example of an operating control is a temperature regulating control a cont
40、rol that maintains the temperature of water to a user-determined level. 4.7 CONTROL, PROTECTIVE A device or assembly of devices, the operation of which is intended to reduce the risk of re, electric shock, or injury to persons during normal and reasonably anticipated abnormal operation of the applia
41、nce whereby during the evaluation of the protective control/circuit, the protective functions are veried under normal and single-fault conditions of the control. For example, a thermal cutout/limiter, or any other control/circuit relied upon for normal and abnormal conditions, is considered a protec
42、tive control. 4.8 CONTROL, TYPE 2 ACTION The actuation of an automatic control of 2.1.1 for which the manufacturing deviation and the drift of its operating value, operating time, or operating sequence have been declared and tested under this end product standard. 4.9 CONTROL, TYPE (2) D.H ACTION Th
43、is action is applicable to manual controls (described in 2.1.4 above). A Type D.H action shall be so designed that the contacts cannot be prevented from opening and which may automatically reset to the closed position if the reset means is held in the reset position. The control shall not reset auto
44、matically at any temperature above -35 C with the reset mechanism in the normal position. 4.10 CONTROL, TYPE (2) D.J ACTION This action is applicable to manual controls (described in 4.6 above). A Type D.J action shall be so designed that the contacts cannot be prevented from opening, and the contro
45、l is not permitted to function as an automatic reset device if the reset means is held in the reset position. The control shall not reset automatically at any temperature above -35 C. 4.11 LINE-VOLTAGE CIRCUIT A circuit involving a potential of not more than 600 volts and having circuit characterist
46、ics in excess of those of a low-voltage circuit. 4.12 LOW-VOLTAGE CIRCUIT A circuit involving a peak open-circuit potential of not more than 42.4 volts supplied by a battery, by a Class 2 transformer, or by a combination of a transformer and a xed impedance that as a unit, complies with all performa
47、nce requirements for a Class 2 transformer. A circuit derived from a line-voltage circuit by connecting a resistance in series with the supply circuit as a means of limiting the voltage and current is not a low-voltage circuit. 4.13 OPPOSITE POLARITY A difference of potential between two points, whe
48、re shorting of these two points would result in a condition involving overload, rupturing of printed wiring-board tracks, components or fuses, and the like. 4.13.1 PEDICURE SPA An appliance intended for water immersion of feet, usually (but not necessarily) associated with professional pedicure serv
49、ices. A pedicure spa usually has a water circulation/foot massage function and a water heater, and may additionally have heat and massage functions in an integral chair. A pedicure spa may be portable, stationary or be intended to be permanently xed in place. 4.13.1 added March 14, 2014 4.14 PRIMARY CIRCUITS The wiring and components that are conductively connected to the supply circuit. MARCH 14, 2014 ELECTRIC PLUMBING ACCESSORIES - UL 1951 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED
