1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUNDERWRITERS LABORATORIES INC. CERTIFICATION REQUIREMENT DECISIONThis Certification Requirement Decision is prepared and published by Underwriters Laboratories Inc.(UL). It is normative for the a
2、pplicable UL Product Certification Program(s); however, it is currently notpart of the UL Standard(s) referenced below.Product Category (CCN): PRGY, PRGY2, PRHJ, PRHJ2, QXZFStandard Number: UL 1004-1Standard Title: Standard for Rotating Electrical Machines - General RequirementsEdition Date: Septemb
3、er 19, 2012Edition Number: 2Section / Paragraph Reference: New Appendix ASubject: Form Wound Machines (motors and generators) rated up to 34,000 VSUPERCEDES PRIOR CERTIFICATION REQUIREMENT DECISION DATED 2014-11-03DECISION:APPENDIX AA1 ScopeA1.1 These requirements apply to field installed form wound
4、 machines rated between 460 V and up to34,000 volts. These requirements supplement the requirements those specified in the standard forRotating Electrical Machines, UL 1004-1.A1.2 Table A1 specifies those requirements in UL 1004-1 that are applicable to form wound machines.Table A1Paragraphs Applica
5、ble for Form Wound MachinesPar. No. Par. Name1.3 1.8 Scope3 Units of measurement4 Undated references5 Glossary6 Current and HorsepowerRelation8 Mechanical Assembly9.1.1, 9.1.2, 9.2, and 9.3 Frame and Enclosure10.5, 10.6, 10.8 and 10.9 Grounding11 Grounding Identification14 Protection Against Corrosi
6、on17 Factory wiring Terminals andLeadsTables 18.1 and 18.2 Spacings (when rated 1000Vor less)19 Current-carrying PartsA2 DefinitionsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULA2.1 Cycloaliphatic Epoxy Epoxy resin consisting of two compone
7、nts that react with each other forminga hard, inert material. Cycloaliphatic epoxies (where “cycloaliphatic” is used as the curing agent) are notedfor higher resistance to moisture and UV breakdown compared with non-cycloaliphatic epoxies.A2.2 Heated condition Any temperature where the windings are
8、above the rated ambient of themachine.A2.3 Reference System A system of insulating materials that has been found acceptable based onservice life experience or through test for a given insulation system temperature class.A2.4 RTD/ETD Resistance Temperature Detector/Embedded Temperature Detector insta
9、lled within themachine near the windings to measure temperatures (when used as a measurement device for theTemperature test).A2.5 Form wound machine - A rotating electrical machine using insulated rectangular shaped conductorsthat are wrapped with additional electrical insulation over the entire coi
10、l prior to insertion and are preciselypositioned and formed into coils.A3 Spacings for Form Wound Machines Rated Above 1000 VA3.1 The spacing between field-wiring terminals of opposite polarity, and a spacing between a field-wiringterminal and any other uninsulated metal part, including removal meta
11、l enclosures shall not be less thanthat specified in Table A3.Exception: Machines with rated voltages not exceeding 750V shall comply with the spacing requirementsin Table 18.1 of UL 1004-1. Machines with rated voltages between 751 and 1000V shall comply with thespacing requirements in Table 18.2 of
12、 UL 1004-1.A3.2 Spacings shall be measured with wire of the appropriate size for the rating connected to theterminals as in actual service.Table A3Minimum Spacings for Voltages above 1000VPartsinvolvedMaximumvoltageMinimum spacings, mmBetween bare live parts ofopposite polarityBetween bare live part
13、s andnon-current carrying metalBetween bare live parts andremovable metal enclosuresThrough-air Over-surface Through-air Over-surface Through-air Over-surfaceWiringterminals forinstaller2400 25 50 25 50 25 504200 50 88 50 88 50 887200 100 125 100 125 100 12512,000 125 160 125 160 125 16013,800 150 2
14、00 150 200 150 20018,000 175 250 175 250 175 25023,000 305 460 305 460 305 46028,000 405 620 405 620 405 62034,000 455 690 455 390 455 690A3.3 Insulating liner or barriers may be used to reduce spacings below those in Table A3 provided theconstruction complies with the dielectric voltage withstand t
15、est in Par. A6.A3.4 The creepage distances are based on applications at altitudes below 1000 m. The spacings in TableA3 shall be increased 3% for every 300 m above 1000 m.STANDARD NUMBER: UL 1004-1 -2-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION F
16、ROM ULA4 Insulation SystemsA4.1 Insulation systems shall comprise materials that have been shown by service life experience or testto have suitable thermal endurance when operating at the temperature limit declared. Compliance is to bedemonstrated by one of the following methods:a) Insulation system
17、s without suitable field experience may be used provided the insulationsystem in question (candidate system) complies with IEC 61858 Part 2: “Electrical insulationsystems Thermal evaluation of modifications to an established electrical insulation system(EIS) Part 2: Form-wound EIS” Clause 9, when te
18、sted against a system previously found tobe acceptable for service at the rated temperature class; orb) A modified or a new insulation system complying with the requirements of IEC 60034-18-31,Part 18-31: “Functional evaluation of insulation systems Test procedures for form-woundwindings Thermal eva
19、luation and classification of insulation systems used in rotatingmachines”;c) For form wound machines rated 15,000 V or less, using IEEE 1776: “RecommendedPractice for Thermal Evaluation of Unsealed or Sealed Insulation Systems for AC ElectricMachinery Employing Form-Wound Pre-Insulated Stator Coils
20、 for Machines Rated 15000 V orBelow” is considered to meet the intent of this requirement; ord) The manufacturers declaration with supporting documents such as test reports toestablished standards and documentation of machines using the materials with service lifeexperience reports.A.5 Electrical In
21、sulationA5.1 Materials used to support terminals or live parts other than magnet wire shall be constructed ofmaterials that have been shown by experience or test to have suitable thermal and electrical propertiessuitable for the temperatures measured during intended use. Compliance is to be demonstr
22、ated by one ofthe following methods:a) Materials that have been investigated and found acceptable in accordance with theapplicable requirements covering mechanical/electrical property considerations of the Standardfor Polymeric Materials - Use in Electrical Equipment Evaluations, UL 746C and Table A
23、5.b) Phenolic, ceramic, porcelain and cycloaliphatic epoxies are able to be used withoutadditional evaluation.c) Materials used to support live parts are considered acceptable when exhibiting propertiesshown in Table A5 and used within established thermal ratings for the temperatures measuredduring
24、intended use.d) The manufacturers declaration with supporting documents such as test reports toestablished standards and documentation of machines using the materials with service lifeexperience reports.STANDARD NUMBER: UL 1004-1 -3-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORD
25、ISTRIBUTION WITHOUT PERMISSION FROM ULTable A5Performance LevelsFlame rating Volume resistivity Dielectric strength CTI HAI HWI(ohm-cm) (dry/wet) (volts) (PLC) (PLC) (PLC)HB 50/10 x 1065000 2 1 2V-2, VTM-2 50/10 x 1065000 2 2 2V-1, VTM-1 50/10 x 1065000 2 2 3V-0, VTM-0 50/10 x 1065000 2 3 4PERFORMAN
26、CEA6 Dielectric Voltage-Withstand TestA6.1 While in a heated condition, the machine shall withstand without breakdown the application of a40-70 Hz or a direct current potential equal to the value shown in Table A6 for the applicable conditions.The voltage potential shall be present for 1 minute.Tabl
27、e A6Dielectric Voltage PotentialApplication of voltage Test potential, AC Test potential, DCPrimary wiring or terminals and deadmetal parts1000+2V 1.7(1000+2V)Primary wiring or terminals and low-voltage circuits - 42.4 volts peak ac, 60volts dc or less1000+2V 1.7(1000+2V)Brushless exciter fields and
28、 dead metalparts (dc exciters rated 350V or less)10V or 1500V, whichever is greater 1.7(10V) or 2550V, whichever is greaterBrushless exciter fields and dead metalparts (dc exciters rated greater than350V)2800+2V 1.7(2800+2V)AC excited stators (fields) and deadmetals parts1000+2V 1.7(1000+2V)Accessor
29、y devices and dead-metal 1000+2V 1.7(1000+2V)A6.2 The applied potential is to be gradually increased until the required test value is reached.A6.3 Accessory devices (such as space heaters, thermostats, thermocouples, thermistors, RTDs andETDs, etc.) in contact with the winding but connected in, shal
30、l be connected to the frame or core duringmachine winding high-potential tests.A6.4 During the accessory testing all other machine windings and components shall be connectedtogether and to the frame or core.A7 Temperature TestA7.1 The temperature test is to be conducted with the machine under test d
31、elivering full rated operatingpower multiplied by any service factor delivering full rated output. For machines without marked ratedoutput, the machine is to be loaded, or if necessary the voltage raised, until the machine operates at ratedcurrent.STANDARD NUMBER: UL 1004-1 -4-UL COPYRIGHTED MATERIA
32、L NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULException No. 1: Alternatively the machine may be tested using any of the test methods described in IEC60034-29, Rotating electrical machines Part 29: Equivalent Loading and Superposition Techniques Indirect Testing t
33、o determine temperature.Exception No. 2: Alternatively the machine may use any of the test methods described in IEEE 112,Standard Test Procedure for Polyphase Induction Machines and Generators Clause 5.8.A7.2 The temperature test is to be conducted until thermal stabilization is attained. Following
34、stabilization,the temperatures on the windings shall not exceed the maximum temperatures specified in Table A7.Temperatures may be measured using thermocouple, RTD/ETD, or the change-of-resistance method.Table A7Maximum temperaturesWinding temperatures C (F)1. Class A machinesa, bAll machines by res
35、istance 100 (212)All machines 1500 hp and less by thermocouple or embedded detector 110 (230)Machines rated more than 1500 hp, 7000V or less 105 (221)Machines rated more than 1500 hp, more than 7000V 100 (212)2. Class B machinesa, bAll machines by resistance 120 (248)All machines 1500 hp and less by
36、 thermocouple or embedded detector 130 (266)Machines rated more than 1500 hp, 7000V or less 125 (257)Machines rated more than 1500 hp, more than 7000V 120 (248)3. Class F machinesa, bAll machines by resistance 145 (293)All machines 1500 hp and less by thermocouple or embedded detector 155 (311)Machi
37、nes rated more than 1500 hp, 7000V or less 150 (302)Machines rated more than 1500 hp, more than 7000V 145 (293)4. Class H machinesa, bAll machines by resistance 165 (329)All machines 1500 hp and less by thermocouple or embedded detector 180 (356)Machines rated more than 1500 hp, 7000V or less 175 (3
38、47)Machines rated more than 1500 hp, more than 7000V 165 (329)Notes:aMachines with a 1.15 SF or larger shall be permitted to have an additional 10C rise when operatedat service factor load.bMachines intended for use on inverter systems, when tested using a non-inverter supply, shall berestricted to
39、temperatures 10C lower than temperatures indicated in the table.MANUFACTURING AND PRODUCTION TESTSA8 Dielectric Voltage-Withstand TestA8.1 The machine shall withstand without breakdown the application of a 40-70 Hz or a direct currentpotential equal to the value shown in Table A8 for the applicable
40、conditions. The voltage potential shall bepresent for 1 minute or for 1 second when a test potential of 120% is used.Exception: Units previously subjected to the Dielectric Voltage-withstand test described under Par. 6 arenot required undergo a second production line Dielectric Voltage-withstand tes
41、t.STANDARD NUMBER: UL 1004-1 -5-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable A8Dielectric Voltage PotentialApplication of voltage Test potential, AC Test potential, DCPrimary wiring or terminals and deadmetal parts1000+2V 1.7(1000+2V)
42、Primary wiring or terminals and low-voltage circuits - 42.4 volts peak ac, 60volts dc or less1000+2V 1.7(1000+2V)Brushless exciter fields and dead metalparts (dc exciters rated 350V or less)10V or 1500V, whichever is greater 1.7(10V) or 2550V, whichever is greaterBrushless exciter fields and dead me
43、talparts (dc exciters rated greater than350V)2800+2V 1.7(2800+2V)AC excited stators (fields) and deadmetals parts1000+2V 1.7(1000+2V)Accessory devices and dead-metal 1000+2V 1.7(1000+2V)A8.2 The applied potential is to be gradually increased until the required test value is reached.A8.3 Accessory de
44、vices (such as space heaters, thermostats, thermocouples, thermistors, RTDs andETDs, etc.) in contact with the winding but connected in, shall be connected to the frame or core duringmachine winding high-potential tests.A8.4 During the accessory testing all other machine windings and components shal
45、l be connectedtogether and also connected to the machine frame or core.MARKINGSA9 GeneralA9.1 A machine shall be marked to indicate:a) Manufacturers name or identification;b) Machine catalog or model number;c) Rated voltage;d) Full-load amperes, watts or kilowatts, or both;e) Rated speed;f) Rated ou
46、tput;g) Rated temperature rise or the insulation system class of meeting temperature;h) Rated ambient temperature, if other than 40C (104F);i) Rated frequency expressed in one of the following terms: hertz, Hz, ac-dc, (frequency inHz)/dc (for example, 60/dc), or ac only or direct current; and, for a
47、 machine intended for useon a polyphase circuit, number of phases;j) If greater than 1, number of phases; andSTANDARD NUMBER: UL 1004-1 -6-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULk) the altitude if designed to operate at greater than 1
48、000 m.l) Class of insulation systemA9.2 Machines shall clearly identify the intended operating cycle.RATIONALE FOR DECISION:This Certification Requirement Decision is intended to document the requirements for Form WoundMachines. These new requirements make a distinction between form wound and random
49、 woundmachines. In general, form wound machines are field installed and used in industrial applications usinghigher voltages. Random wound machines are typically used in the residential, commercial and industrialapplications using voltages of 1000V or less. Since the voltage range overlaps, the application ofrequirements was based on the construction of the insulation system, rather than just the machine voltagerating.Presently, UL 1004-1 has requirements for rotating electrical machines rated up to 7200 volts. This CRDspecifies the requirements applic
