1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULDecember 5, 20061SUBJECT 906OUTLINE OF INVESTIGATIONFORSOLENOIDSIssue Number: 4DECEMBER 5, 2006Summary of TopicsThis new issue of SU 906 is being issued through ULs electronicpublishing system to
2、 ensure format uniformity between the PDF andHTML versions of the document. No substantive changes have beenincorporated in the document.The UL Foreword is no longer located within the UL Standard. For informationconcerning the use and application of the requirements contained in thisStandard, the c
3、urrent version of the UL Foreword is located onULStandardsInfoNet at: http:/ 2006 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULDECEMBER 5, 2006SUBJECT 9062No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORI
4、ZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSGENERAL1 Scope .42 General 43 Units of Measurement .44 Components 4CONSTRUCTION5 Frame and Assembly 56 Springs 57 Current-Carrying Parts .58 Wiring Terminals and Leads 59 Protective Devices 610 Coil Insulation .611 Spacing
5、s 6PERFORMANCE12 General .713 Input Test .914 Temperature Test 915 Dielectric Voltage-Withstand Test .1015.1 General .1015.2 Induced Potential .1116 Burnout Test .1117 Strain Relief Test .11RATING18 General 12MARKING19 General 1220 Permanence .13DECEMBER 5, 2006 SUBJECT 906 3UL COPYRIGHTED MATERIAL
6、NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULGENERAL1 Scope1.1 These requirements cover solenoids rated 600 volts or less.1.2 These requirements do not cover solenoids that are part of complete products such as electric valves,contactors, and the like.2 General2.1
7、 Compliance with these requirements does not assure that the solenoid is acceptable for use as acomponent of an end product. The acceptability of a solenoid in any particular application depends uponits performance in continued use under the conditions that prevail in actual service. Accordingly, as
8、olenoid might be affected by the requirements for the equipment in which it is used, and it may benecessary to additionally investigate that solenoid for features or characteristics that are not specified inthis outline of investigation.2.2 Any undated reference to a code or standard appearing in th
9、e requirements of this standard shall beinterpreted as referring to the latest edition of that code or standard.3 Units of Measurement3.1 When a value for measurement is followed by a valve in other units in parentheses, the first statedvalue is the requirement.4 Components4.1 A component in a produ
10、ct covered by this outline shall comply with the requirements for thatcomponent.Exception: A component need not comply with a specific requirement that:a) Involves a feature or characteristic not needed in the application of the component in theproduct covered by this outline, orb) Is superseded by
11、a requirement in this outline.4.2 A component shall be used in accordance with its recognized rating established for the intendedconditions of use.4.3 Specific components are recognized as being incomplete in construction features or restricted inperformance capabilities. Such components are intende
12、d for use only under limited conditions, such ascertain temperatures not exceeding specified limits, and shall be used only under those specific conditionsfor which they have been recognized.DECEMBER 5, 2006SUBJECT 9064UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WI
13、THOUT PERMISSION FROM ULCONSTRUCTION5 Frame and Assembly5.1 A solenoid shall be formed and assembled so that it will have the strength and rigidity necessary toresist the abuses to which it may be subjected, without increasing the risk of fire, electric shock, or injuryto persons.6 Springs6.1 A spri
14、ng shall be protected against abrasion and shall be guided or arranged to reduce binding,buckling, or other interference with its free movement.7 Current-Carrying Parts7.1 Current-carrying parts shall be silver, copper, copper alloy, or other metal acceptable for such use.7.2 Uninsulated live parts,
15、 including terminals and contact assemblies, shall be prevented from turning orshifting in position by being secured to their supporting surfaces by methods other than friction betweensurfaces.7.3 A lock washer is acceptable to prevent turning of a terminal or connection stud.7.4 A terminal bound in
16、to the winding is acceptable to prevent turning of a terminal.8 Wiring Terminals and Leads8.1 Among the factors to be considered in judging wiring terminals and leads are the type and size of wireto be connected, ampacity of the terminals, and mechanical protection. These are dependent uponrequireme
17、nts for the end-use equipment.8.2 Leads shall consist of general-use wire or appliance wiring material acceptable for the application,when considered with respect to the temperature, voltage, and conditions of service to which the wiring islikely to be subjected.DECEMBER 5, 2006 SUBJECT 906 5UL COPY
18、RIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL9 Protective Devices9.1 Protective devices may be used to interrupt the flow of current to the solenoid coil. Such devicesinclude fuses, overtemperature and overcurrent protectors, thermostats, and the
19、like that comply with therequirements for such devices.9.2 A crossed or nicked cross-section conductor shall not be employed as a protective device.9.3 Operation of a thermal cutoff in a solenoid shall not cause a risk of fire or electric shock duringintended use.9.4 A protective device shall be loc
20、ated inside the overwrap insulation.10 Coil Insulation10.1 Coil insulation, unless inherently moisture resistant, shall be treated to render it resistant to moisture.Film-coated magnet wire is not required to be additionally treated to resist moisture absorption.10.2 Insulation between a crossover l
21、ead and the winding to which it is connected is not specified if thecoil withstands the induced potential test described in 15.2.1.10.3 If during the temperature test at rated voltage, a coil operates at a temperature above the acceptablelimit for Class 105 insulation, the coil insulation of the sol
22、enoid shall comply with the requirements in theStandard for Systems of Insulating Materials General, UL 1446, for the temperature rating involved.11 Spacings11.1 Spacings between uninsulated live parts and line-voltage circuits shall not be less than 1/16 inch(1.6 mm) through air or over surface for
23、 a solenoid rated 300 volts or less and 1/4 inch (6.4 mm) for asolenoid rated 301 to 600 volts.Exception: Spacings are not specified for a solenoid intended for use only in a Class 2 circuit.11.2 A spacing at a wiring terminal is to be measured with appropriate wires connected to the terminalsas in
24、actual service.11.3 Film-coated wire is considered to be an uninsulated live part in determining compliance with thespacing requirements in this outline.11.4 A slot in a molded bobbin for guiding the crossover or start-lead unspliced at the windings of amagnet coil is to be filled with an insulating
25、 material unless:a) the slot provides a graduated spacing to the winding increasing to the end turns,b) the magnet-coil winding withstands the induced potential test described in 15.2.1.DECEMBER 5, 2006SUBJECT 9066UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT
26、 PERMISSION FROM ULPERFORMANCE12 General12.1 Except as otherwise indicated, representative commercial samples are to be subjected to theapplicable test described herein. The order of tests, as far as applicable, is to be as indicated in Table12.1; the tests are to be conducted at rated frequency and
27、 at the voltage indicated in that table.Exception No. 1: If a solenoid is rated at 50 hertz only or 50/60 hertz, the input, temperature, and burnouttests may be conducted, with the concurrence of those concerned, at a frequency of 60 hertz and at atest voltage calculated as specified in 12.2.Excepti
28、on No. 2: If a solenoid is rated at 50/60 hertz, and the test voltage calculated in accordance with12.2 is less than or equal to the 60 hertz test voltage specified in Table 12.1, the input, temperature, andburnout tests are to be conducted at the higher voltage.Table 12.1Tests and test voltages60 H
29、ertz voltage rating with corresponding test potential in voltsTest 110 120 220 240 254 277 440 480 550 600Input 120 240 277 480 600Temperature 120 240 277 480 600Dielectric Voltage Withstand As Described in TextBurnout 120 240 277 480 600Notes 1 If the 60 hertz voltage rating of a solenoid does not
30、fall within any of the indicated voltage ranges, it shall be tested at itsrated voltage.2 If coils rated for 60 hertz are supplied for various voltage ratings within a specified range (for example, 110, 115, or 117 volts),and if a coil is available for the maximum voltage rating of that range (120 v
31、olts), tests may be conducted on representativecoils based on the marked voltage ratings of the coils selected for testing. If a coil is not available for the maximum voltagerating of that range, tests shall be conducted on all coils at the test potential indicated in this table.3 If a coil is rated
32、 at 50 hertz, the test voltage shall be based on the rated voltage. See Exception Nos. 1 and 2 to 12.1.12.2 The test voltage is to be based on increasing the current through the coil in accordance with the ratioof the impedance at the two frequencies for which the solenoid is rated. The test voltage
33、 is to becalculated from the following formula:DECEMBER 5, 2006 SUBJECT 906 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULin which:VTis the test voltage;VRis the rated voltage at 50 hertz;VMis the rated voltage at 60 hertz, or 1.091 VRif th
34、e solenoid has a frequency rating of 50hertz only;IMis the input current measured at VMat 60 hertz; andPMis the input power measured at VMand 60 hertz.12.3 A solenoid that must be mounted in a definite position in order to function as intended is to be testedin that position provided that directions
35、 for mounting in the correct position are given on the solenoid or inan instruction sheet supplied with the solenoid.12.4 To assist in conducting the performance tests, the following information is to be provided for eachproduct catalog number:a) Electrical rating,b) Duty cycle (on-off time),c) Type
36、 of operation (push-pull),d) Maximum stroke in inches,e) Inrush current blocked at maximum stroke length, andf) Mechanical load rating.DECEMBER 5, 2006SUBJECT 9068UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL13 Input Test13.1 The input shal
37、l not exceed the rated input of the solenoid by more than 10 percent when the solenoidis operated under the conditions of intended use and while connected to a supply circuit as specified inTable 12.1.14 Temperature Test14.1 When tested as described in 14.2 14.10 a solenoid shall not attain a temper
38、ature at any pointsufficiently high to constitute a risk of fire, to damage any materials employed in the equipment, or toexceed the temperature rises specified in Table 14.1.Table 14.1Maximum temperature risesMaterials and components C F1. Wireaa2. Class 105 insulation systems on coilsThermocouple
39、method 65 117Resistance method 85 1533. Class 130 insulation systemsThermocouple method 85 153Resistance method 95 1714. Class 155 insulation systems on coilsThermocouple method 95 171Resistance method 115 2075. Class 180 insulation systems on coilsThermocouple method 115 207Resistance method 135 24
40、36. Varnished-cloth insulation 60 1087. Phenolic composition employed as electrical insulation or as a part thefailure of which would result in a risk of fire or electric shockc125 2258. Fiber employed as electrical insulation 65 1179. Sealing compoundsbbaThe maximum acceptable temperature, correcte
41、d to a 25C (77F) assumed ambient temperature, shall not exceed themarked temperature limit of the wire in question.bThe maximum acceptable temperature, corrected to a 25C assumed ambient temperature, of a sealing compound is 15C(27F) less than the melting-point temperature of the compound.cThe limit
42、ation on phenolic composition and on rubber and thermoplastic insulation does not apply to compounds that havebeen investigated and found to be acceptable for higher temperatures.14.2 All values for temperature rises specified in Table 14.1 apply to solenoids intended for use atambient temperatures
43、normally prevailing in occupiable spaces, which usually are not higher than 25C(77F) but may be as high as 40C (104F) occasionally for brief periods. Tests of solenoids for servicewith such ambient temperatures may be conducted without correction at any ambient temperature inthe range of 10 40C (50
44、104F).DECEMBER 5, 2006 SUBJECT 906 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL14.3 Solenoids intended specifically for use with a prevailing ambient temperature constantly higher than25C (77F) are to be tested at such higher ambient temp
45、erature, and the acceptable temperature risesspecified in Table 14.1 are to be reduced by the amount of the difference between the higher ambienttemperature and 25C.14.4 If a solenoid is not intended for continuous operation, the temperature test is to be conducted at therated duty cycle (on-off tim
46、e).14.5 Other than at coils, temperatures are to be measured by thermocouples consisting of wires notlarger than No. 24 AWG (0.21 mm2) and not smaller than No. 30 AWG (0.05 mm2). See 14.7.14.6 When thermocouples are used to determine temperatures in electrical equipment, it is commonpractice to empl
47、oy thermocouples consisting of No. 30 AWG iron and constantan wires and apotentiometer-type instrument. Such equipment is to be used whenever referee temperaturemeasurements by thermocouples are necessary.14.7 The thermocouple wire is to conform with the requirements for special thermocouples as lis
48、ted in thetable of limits of error of thermocouples in the Standard for Temperature-Measurement Thermocouples,ISA MC96.1-1982.14.8 The preferred method of measuring temperatures on coils is the change-of-resistance method.14.9 A temperature is considered to be constant when there is no change in thr
49、ee successive readingstaken at intervals of 10 percent of the previously elapsed duration of the test, but not less than 5-minuteintervals.14.10 During this test, the solenoid is to be operated under intended conditions while mounted on awooden surface. The potential of the supply circuit is to be as specified in Table 12.1.Exception: The solenoid may be mounted on a metal surface if such directions are marked on theproduct or provided in the mounting instructions.15 Dielectric Voltage-
