UL 863-2007 UL Standard for Safety Time-Indicating and -Recording Appliances (Eighth Edition Reprint with Revisions Through and Including November 03 2009)《时间指示和计时仪器》.pdf

1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUL 863Time-Indicating and -RecordingAppliancesUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR F

2、URTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUL Standard for Safety for Time-Indicating and -Recording Appliances, UL 863Eighth Edition, Dated November 16, 2007SUMMARY OF TOPICSThese revisions to UL 863 are being issued to address universal upkeep of UL Standards forSafety. These rev

3、isions are considered to be non-substantive and not subject to ULs STPprocess.Text that has been changed in any manner or impacted by ULs electronic publishing system is markedwith a vertical line in the margin. Changes in requirements are marked with a vertical line in the marginand are followed by

4、 an effective date note indicating the date of publication or the date on which thechanged requirement becomes effective.All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, ortransmitted in any form by any means, electronic, mechanical photocopying, reco

5、rding, or otherwisewithout prior permission of UL.UL provides this Standard as is without warranty of any kind, either expressed or implied, including butnot limited to, the implied warranties of merchantability or fitness for any purpose.In no event will UL be liable for any special, incidental, co

6、nsequential, indirect or similar damages,including loss of profits, lost savings, loss of data, or any other damages arising out of the use of or theinability to use this Standard, even if UL or an authorized UL representative has been advised of thepossibility of such damage. In no event shall ULs

7、liability for any damage ever exceed the price paid forthis Standard, regardless of the form of the claim.Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold ULharmless from and against any loss, expense, liability, damage, claim, or judgment (including

8、reasonableattorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronicStandard on the purchasers computer system.The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, figures,and/or other elements of the Stand

9、ard having future effective dates as indicated in the note following theaffected item. The prior text for requirements that have been revised and that have a future effective dateare located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice.NOVEMBER 3, 2009 UL 863 tr1UL COPYRI

10、GHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNOVEMBER 3, 2009 UL 863tr2No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNOVEMBER 16, 2007(Title Page Reprinted: November 3, 2

11、009)1UL 863Standard for Time-Indicating and -Recording AppliancesFirst Edition October, 1941Second Edition May, 1968Third Edition October, 1970Fourth Edition July, 1975Fifth Edition March, 1982Sixth Edition April, 1993Seventh Edition July, 1997Eighth EditionNovember 16, 2007Comments or proposals for

12、 revisions on any part of the Standard may besubmitted to UL at any time. Proposals should be submitted via a ProposalRequest in ULs On-Line Collaborative Standards Development System (CSDS)at http:/.ULs Standards for Safety are copyrighted by UL. Neither a printed nor electroniccopy of a Standard s

13、hould be altered in any way. All of ULs Standards and allcopyrights, ownerships, and rights regarding those Standards shall remain thesole and exclusive property of UL.COPYRIGHT 2009 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT

14、PERMISSION FROM ULNOVEMBER 16, 2007TIME-INDICATING AND -RECORDING APPLIANCES - UL 8632No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .52 General 52.1 Components .52.2 Units of measurement .62.3

15、Undated references .6CONSTRUCTION3 General 64 Frame and Enclosure 64.1 General .64.2 Doors and covers .85 Protection Against Corrosion .86 Mechanical Assembly .97 Supply Connections Cord-Connected Appliances .97.1 Cords and plugs 97.2 Grounding 137.3 Strain relief .137.4 Bushings .148 Supply Connect

16、ions Permanently-Connected Appliances .158.1 General 158.2 Terminal boxes 158.3 Field-wiring terminals and leads .158.4 Provisions for grounding 169 External Interconnections .189.1 Cord-connected appliances .189.2 Permanently-connected appliances 1810 Live Parts 1811 Internal Wiring 1812 Coil Windi

17、ngs 1913 Separation of Circuits .2014 Spacings 2115 Outdoor-Use Appliances .2315.1 General .2315.2 Rainproof enclosures .2315.3 Lampholders .24PERFORMANCE16 Current Input Test 2417 Normal Temperature Test 2518 Overload Test 2919 Endurance Test 2920 Burnout Test .3021 Dielectric Voltage-Withstand Tes

18、t .3022 Crossover Lead Dielectric Voltage-Withstand Test 3122.1 General .3122.2 Potential test 31NOVEMBER 16, 2007 TIME-INDICATING AND -RECORDING APPLIANCES - UL 863 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL22.3 Potential test repeated

19、 3123 Strain Relief Test .3124 Test for Resistance to Rain 3225 Gasket Aging Test 35MANUFACTURING AND PRODUCTION TESTS26 Production-Line Dielectric Voltage-Withstand Test 3727 Production-Line Grounding Continuity Test .38RATINGS28 General 39MARKINGS29 General 3930 Supply Wiring 4031 Ratings 4032 Inf

20、ormational .4033 Cautionary .41APPENDIX AStandards for ComponentsA1NOVEMBER 16, 2007TIME-INDICATING AND -RECORDING APPLIANCES - UL 8634UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 These requirements cover electrically

21、-operated clocks that form parts of a master clock system,secondary, cost, pay-roll, and other clocks intended primarily for industrial installations; and also timestamps, job-card recorders, timers, and similar time-indicating and -recording appliances. Theseappliances are intended for use on circu

22、its of 300 volts or less in accordance with the National ElectricalCode.1.2 These requirements do not cover clocks intended primarily for household installations nor do theycover illuminated clocks designed to serve as portable electrical lamps or for other illuminating purposes.2 General2.1 Compone

23、nts2.1.1 Except as indicated in 2.1.2, a component of a product covered by this standard shall comply withthe requirements for that component. See Appendix A for a list of standards covering componentsgenerally used in the products covered by this standard.2.1.2 A component is not required to comply

24、 with a specific requirement that:a) Involves a feature or characteristic not required in the application of the component in theproduct covered by this standard, orb) Is superseded by a requirement in this standard.2.1.3 A component shall be used in accordance with its rating established for the in

25、tended conditions ofuse.2.1.4 Specific components are incomplete in construction features or restricted in performancecapabilities. Such components are intended for use only under limited conditions, such as certaintemperatures not exceeding specified limits, and shall be used only under those speci

26、fic conditions.NOVEMBER 16, 2007 TIME-INDICATING AND -RECORDING APPLIANCES - UL 863 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL2.2 Units of measurement2.2.1 Values stated without parentheses are the requirement. Values in parentheses are

27、 explanatory orapproximate information.2.2.2 Unless indicated otherwise all voltage and current values mentioned in this standard are root meansquare (rms).2.3 Undated references2.3.1 Any undated reference to a code or standard appearing in the requirements of this standard shallbe interpreted as re

28、ferring to the latest edition of that code or standard.CONSTRUCTION3 General3.1 Throughout these requirements the term thermoplastic is used to designate a synthetic compound,the basic constituent of which is polyvinyl chloride or a copolymer of vinyl chloride and vinyl acetate.4 Frame and Enclosure

29、4.1 General4.1.1 An appliance shall be formed and assembled so that it has the strength and rigidity to resist theabuses to which it is likely to be subjected, without increasing the risk of fire, electric shock, or injury topersons due to total or partial collapse with resulting reduction of spacin

30、gs, loosening or displacement ofparts, or other serious defects.4.1.2 An edge, projection, or corner of an enclosure, opening, frame, guard, knob, handle, or similar partof an appliance shall be smooth and rounded and not sufficiently sharp to cause a cut type injury whencontacted during normal use

31、or user maintenance.4.1.3 An electrical part of an appliance shall be located or enclosed so that persons will notunintentionally contact a live part, unless the voltage on the part is 30 volts or less or the available currentmeasured through a 1500-ohm, noninductive resistor is 5 milliamperes or le

32、ss.4.1.4 Unless the appliance is marked in accordance with 33.1, a device such as a lampholder, fuseholder,circuit breaker, or a replaceable tape shall be designed and installed so that persons servicing the lamps,fuses, circuit breakers, or other devices will not unintentionally contact any uninsul

33、ated live part other thana screw shell or the clips of a fuseholder.4.1.5 The enclosure of an appliance shall be complete. No dependence shall be placed on adjacent wallsor equipment to complete an enclosure.Exception: An elapsed time indicator may have an incomplete enclosure if the indicator has p

34、rovision forpanel mounting so that uninsulated live parts and internal wiring are completely enclosed after installation.NOVEMBER 16, 2007TIME-INDICATING AND -RECORDING APPLIANCES - UL 8636UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL4.1.6

35、The enclosure of a stationary appliance shall be provided with means for support. Mounting holesshall be located or guarded so that nails or similar hangers will not come in contact with any bare,covered, or insulated live part.4.1.7 For unreinforced, flat surfaces in general, cast metal shall be no

36、t less than 1/8 inch (3.2 mm) thick.Exception No. 1: Malleable iron may be not less than 3/32 inch (2.4 mm) thick, and die-cast metal may benot less than 5/64 inch (2.0 mm) thick.Exception No. 2: For a curved, ribbed, or otherwise reinforced surface, or if the shape and/or size of thesurface is such

37、 that equivalent mechanical strength is provided, cast metal in general may be not lessthan 3/32 inch, malleable iron may be not less than 1/16 inch (1.6 mm), and die-cast metal may be notless than 3/64 inch (1.2 mm) thick.4.1.8 If threads for the connection of metal conduit are tapped all the way t

38、hrough a hole in a box wall,or if an equivalent construction is used, there shall be not fewer than 3-1/2 and not more than 5 threadsin the metal, and the construction of the device shall be such that a suitable conduit bushing can beproperly attached. If threads for the connection of conduit are no

39、t tapped all the way through a hole in thebox, wall, conduit hub, or the like, there shall be no fewer than 5 full threads in the metal, and there shallbe a smooth, well-rounded inlet for the conductors that shall:a) Afford protection to the conductors equivalent to that provided by a standard condu

40、it bushingandb) Have an internal diameter approximately the same as that of the corresponding trade size ofrigid metal conduit.4.1.9 An enclosure of sheet metal is to be judged with regard to its size, shape, thickness of metal, andits suitability for the particular application, considering the inte

41、nded use of the complete appliance. Theuse of sheet steel having a thickness of less than 0.026 inch (0.66 mm) if uncoated or 0.029 inch (0.74mm) if galvanized or of nonferrous sheet metal having an average thickness of less than 0.036 inch (0.91mm) is not recommended.Exception: Sheet metal thinner

42、than that described may be used for relatively small areas or for surfacesthat are covered or otherwise reinforced.4.1.10 Among the factors taken into consideration when judging a nonmetallic enclosure or an enclosureof magnesium are:a) Mechanical strength,b) Resistance to impact,c) Moisture-absorpt

43、ive properties,d) Combustibility, ande) Resistance to distortion at temperatures to which the material may be subjected underconditions of normal or abnormal usage.NOVEMBER 16, 2007 TIME-INDICATING AND -RECORDING APPLIANCES - UL 863 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR

44、DISTRIBUTION WITHOUT PERMISSION FROM UL4.1.11 If a flush plate facilitating mounting of a clock on an outlet box is provided as an integral part ofthe clock or is packaged or otherwise provided with the clock, the plate shall be made of one of thematerials indicated in Table 4.1, and shall be at lea

45、st as thick as indicated in that table.Table 4.1Thickness of flush platesAcceptable material Minimum acceptable thickness at any point of plate,inch (mm)Ferrous metal 0.030 0.76Nonferrous metal 0.040 1.02Noncombustible electrical insulating material 0.100 2.544.2 Doors and covers4.2.1 A door or cove

46、r that is accessible from outside the enclosure shall be hinged if it gives access toany kind of overload protective device that is required to be enclosed.Exception: A cover, panel, door, or other part of the enclosure that, by its function, obviously must be inplace if the appliance is to operate

47、properly, need not be permanently attached.4.2.2 Means shall be provided for holding the door or cover over a fuseholder in a closed position. Thedoor or cover shall be tight-fitting.5 Protection Against Corrosion5.1 An iron or steel part shall be protected against corrosion by enameling, galvanizin

48、g plating, or otherequivalent means, if the failure of such a part would be likely to result in the risk of fire, electric shock, orinjury to persons.Exception No. 1: If the oxidation of iron or steel from exposure of the metal to air and moisture is not likelyto be appreciable (thickness of metal a

49、nd the temperature also being factors), the surfaces of sheet steeland cast-iron parts within an enclosure need not be protected against corrosion.Exception No. 2: The requirement in 5.1 does not apply to bearings or laminations or to minor parts ofiron or steel (such as washers, screws, and the like).NOVEMBER 16, 2007TIME-INDICATING AND -RECORDING APPLIANCES - UL 8638UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL6 Mechanical Assembly6.1 An appliance shall be assembled so