1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULAPRIL 6, 20121UL 489COUTLINE OF INVESTIGATIONFORMOLDED-CASE CIRCUIT BREAKERS AND MOLDED-CASE SWITCHES FORUSE WITH WIND TURBINESIssue No. 1April 6, 2012Summary of TopicsThis is the first issue of
2、the Outline of Investigation for Molded-CaseCircuit Breakers and Molded-Case Switches for Use with Wind Turbines.COPYRIGHT 2012 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULAPRIL 6, 2012UL 489C2No Text on This
3、PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .52 Components 53 Units of Measurement .64 Undated References 65 Glossary .6CONSTRUCTION6 General 67 Spacings .68 Wire Terminals .7PERFORMANCE9 General 810 Calibra
4、tion 811 Overload Test .912 Endurance Test 913 Dielectric Voltage-Withstand Test .1014 Extreme Ambient Cycling 1015 Temperature Test .1016 Electromagnetic Compatibility Test 10RATINGS17 General 10MARKINGS18 General 11SUPPLEMENT SA - ADDITIONAL TESTS FOR CIRCUIT-BREAKERS WITH ELECTRONICOVERCURRENT PR
5、OTECTIONSA1 Scope SA1SA2 Tests .SA1SA2.1 Electromagnetic compatibility (EMC) tests SA1SA2.2 Suitability for multiple frequencies .SA2SA2.3 Dry heat test .SA2SA2.4 Damp heat test .SA2SA2.5 Temperature variation cycles at a specified rate of change .SA2SA3 General Test Conditions .SA3SA4 Immunity Test
6、s SA3SA4.1 Harmonic currents .SA3SA4.2 Electrostatic discharges SA5SA4.3 Radiated radio-frequency electromagnetic fields SA6APRIL 6, 2012 UL 489C 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULSA4.4 Electrical fast transient/burst (EFT/B) SA
7、6SA4.5 Surges .SA6SA4.6 Conducted disturbances induced by radio-frequency fields (common mode) SA7SA4.7 Current dips SA7SA5 Emission tests .SA8SA5.1 Harmonics SA8SA5.2 Voltage fluctuations .SA8SA5.3 Conducted RF disturbances (150 kHz 30 MHz) .SA8SA5.4 Radiated RF disturbances (30 MHz 1 GHz) SA8SA6 S
8、uitability for multiple frequencies .SA9SA6.1 General SA9SA6.2 Test conditions .SA9SA6.3 Test procedure .SA9SA6.4 Test results .SA10SA7 Dry Heat Test SA10SA7.1 Test procedure SA10SA7.2 Test results .SA11SA7.3 Verification of overload releases .SA11SA8 Damp Heat Test SA11SA8.1 Test procedure SA11SA8.
9、2 Verification of overload releases .SA11SA9 Temperature variation cycles at a specified rate of change SA11SA9.1 Test conditions SA11SA9.2 Test procedure SA12SA9.3 Test results .SA12SA9.4 Verification of overload releases .SA12SUPPLEMENT SB - ELECTROMAGNETIC COMPATIBILITY (EMC) REQUIREMENTS AND TES
10、TMETHODS FOR CIRCUIT BREAKERSSB1 General SB1SB2 Immunity .SB2SB2.1 General SB2SB2.2 Electrostatic discharges SB4SB2.3 Radiated radio-frequency electromagnetic fields SB5SB2.4 Electrical fast transients/bursts (EFT/B) SB5SB2.5 Surges .SB6SB2.6 Conducted disturbances induced by radio-frequency fields
11、(common mode) SB6SB3 Emission .SB7SB3.1 General SB7SB3.2 Conducted RF disturbances (150 kHz 30 MHz) .SB8SB3.3 Radiated RF disturbances (30 MHz 1000 MHz) .SB8APRIL 6, 2012UL 489C4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Sco
12、pe1.1 These requirements cover molded-case circuit breakers and molded-case switches rated up to 690 Vac intended for use in wind turbine applications in nacelle, hub, tower, and ground installations.1.2 A circuit breaker or switch intended for use in wind turbine applications shall comply with thea
13、pplicable requirements of UL 489, except as modified or supplemented by the following requirements.1.3 These circuit breakers and switches shall have the same construction and comply with therequirements for 600 V ac rated circuit breakers and switches.1.4 This Outline contains the following Supplem
14、ents:a) Supplement SA Additional tests for circuit breakers with electronic overcurrent protection;andb) Supplement SB Electromagnetic compatibility (EMC) - Requirements and test methods forcircuit breakers.2 Components2.1 Except as indicated in 2.2, a component of a product covered by this Outline
15、shall comply with therequirements for that component.2.2 A component is not required to comply with a specific requirement that:a) Involves a feature or characteristic not required in the application of the component in theproduct covered by this Outline; orb) Is superseded by a requirement in this
16、Outline.2.3 A component shall be used in accordance with its rating established for the intended conditions ofuse.2.4 Specific components are incomplete in construction features or restricted in performance capabilities.Such components are intended for use only under limited conditions, such as cert
17、ain temperatures notexceeding specified limits, and shall be used only under those specific conditions.APRIL 6, 2012 UL 489C 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL3 Units of Measurement3.1 Values stated without parentheses are the r
18、equirement. Values in parentheses are explanatory orapproximate information.4 Undated References4.1 Any undated reference to a code or standard appearing in the requirements of this outline shall beinterpreted as referring to the latest edition of that code or standard.5 Glossary5.1 For the purpose
19、of this Outline, the following definitions apply.5.2 WIND TURBINE (WT) MOLDED-CASE CIRCUIT BREAKER A molded-case circuit breakerintended to operate in a wind turbine application to provide overcurrent protection.5.3 WIND TURBINE (WT) MOLDED-CASE SWITCH A molded-case switch intended to operate in awi
20、nd turbine application to provide a disconnecting means.CONSTRUCTION6 General6.1 The construction of a WT circuit breaker shall comply with Section 6 of UL 489 except as noted inSections 7 and 8 of this Outline as applicable.6.2 The construction of a WT switch shall comply with Section 10 of UL 489
21、except as noted in Sections7 and 8 of this Outline as applicable.7 Spacings7.1 The electrical spacings for WT circuit breakers and switches rated 601 690 V shall meet therequirements for 600 V.APRIL 6, 2012UL 489C6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT
22、 PERMISSION FROM UL8 Wire Terminals8.1 The field wiring terminal(s) of a WT circuit breaker or switch shall have a capacity acceptable for thenumber, wire size, and type of stranding associated with the circuit breaker and in addition shall beacceptable for at least the size indicated in Table 8.1.T
23、able 8.150C ambient corrected conductor sizeTerminal currenta, A Copper conductorsb,cAluminum condutorsb,cNumber of conductors AWG or kcmil Number of conductors AWG or kcmil15 or less 1 14 1 122011011051101 83018184 16145 14136014127 131180 1 2 1 1/090 1 1 1 1/0100 1 1/0 1 2/0110 1 1/0 1 3/0125 1 2/
24、0 1 4/0150 1 3/0 1 250175 1 250 1 350200 1 300 1 400200 2 1/0 2 2/0225 1 350 1 500225 2 1/0 2 3/0250 1 400 1 600250 2 2/0 2 4/0275 1 500 1 700300 2 3/0 2 250325 2 4/0 2 300350 2 250 2 350350 3 2/0400 2 300 2 400450 2 350 2 500450 3 3/0 3 250500 2 400 2 600500 3 250 3 300550 2 500 3 350600 3 300 3 40
25、0700 3 400 3 500800 3 500 4 400800 4 300 5 3001000 4 400 4 6001200 5 400 6 4001200 6 300 8 2501400 5 500 6 5001400 6 400 9 250APRIL 6, 2012 UL 489C 7Table 8.1 Continued on Next PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable 8.1 Cont
26、inuedTerminal currenta, A Copper conductorsb,cAluminum condutorsb,cNumber of conductors AWG or kcmil Number of conductors AWG or kcmil1600 6 500 6 7001600 7 400 8 4002000 6 500 10 4002000 8 400 8 6002500 9 500 10 600aFor terminal current other than indicated, the next higher rating is to be used for
27、 example, if rated 35 A, enter at 40 A.bTable is based on 75C wire ampacities.cBased on 50C correction factor of Table 310.15(2)(a) of the National Electrical Code, ANSI/NFPA-70.8.2 A WT circuit breaker or switch may also be evaluated for use with metric wire sizes, and/or other classand strand conf
28、igurations as indicated by its marking in accordance with Annex B, Reference No. 6 of UL489.PERFORMANCE9 General9.1 The representative device selection and performance test sequences of a WT circuit breaker shall beconducted as specified in Tables 7.1.1.1 and 7.1.1.2 respectively of UL 489 except as
29、 modified by thisOutline.9.2 WT switches shall be tested in accordance with Section 11 of UL 489 except as modified by thisOutline.9.3 For a field-wired WT switch or circuit breaker, unless otherwise specified, the wire is to be sized inaccordance with UL 489.10 Calibration10.1 In addition to the Ca
30、libration Test specified in Section 7.1.2 of UL 489, a WT circuit breaker shall besubjected to the Calibration Test specified in Section 7.1.2.4 of UL 489 at 50C (122 F). A calibration testat 40C (104F) is not required.10.2 A WT circuit breaker shall be wired with a conductor sized in accordance wit
31、h Table 8.1 or bus barsin accordance with 7.1.4 of UL 489, and subjected to a temperature of 50C (122F) for a period of 3 hoursor until temperatures stabilize. While at 50C (122F), the circuit breaker shall be subjected to theCalibration Test at 100 percent of rated current as described in 7.1.2.4 o
32、f UL 489, until temperaturesstabilize. The WT circuit breaker shall not trip.10.3 In addition to the 200 Percent Calibration Test in Section 7.1.2.2 of UL 489, a WT circuit breakershall be tested at the extremes of its temperature ratings, except that the tripping times may be adjustedbased on the t
33、emperature rerating (adjustment) factors published by the manufacturer, in accordance with10.4.APRIL 6, 2012UL 489C8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL10.4 A WT circuit breaker shall be wired with a conductor sized in accordance w
34、ith Table 8.1 or bus barsin accordance with 7.1.4 of UL 489, and subjected to both extremes of the temperature range stated in17.3. The circuit breaker with leads attached shall be terminated in its intended manner and shall bemounted throughout the tests on a vertical surface in an oven, freezer, c
35、ompartment, or room. Theambient temperature shall be measured as indicated in 7.1.4.1.7 of UL 489. The 200-Percent CalibrationTest shall be made when the temperature at the points shown in Figures 7.1.4.1.1 7.1.4.1.4 of UL 489becomes constant. While at each end of the temperature range, the circuit
36、breaker shall be subjected tothe Calibration Test at 200 percent of rated current. The WT circuit breaker shall trip within the allowabletime.11 Overload Test11.1 A WT circuit breaker shall be subjected to the Overload Test specified in 7.1.3 of UL 489 at themaximum rated voltage specified by the ma
37、nufacturer. The WT circuit breaker shall be wired with aconductor sized in accordance with Table 8.1. The number of operations and test current shall be inaccordance with Table 11.1.Table 11.1Overload testCircuit breaker rating Test current No. of operations249 A and less 600% 50250 A and greater 13
38、5% 2512 Endurance Test12.1 WT circuit breakers and switches shall be capable of performing successfully when subjected to theEndurance Test specified in 7.1.5 of UL 489 at the maximum rated voltage specified by the manufacturer.The number of operations of the Endurance Test shall be in accordance wi
39、th Table 12.1.Table 12.1Endurance testCircuit breaker rating No. of operationsWith load Without load249 A and less 1000 4000250 A and greater 400 2000APRIL 6, 2012 UL 489C 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL13 Dielectric Voltage-
40、Withstand Test13.1 WT circuit breakers and switches shall be subjected to the Dielectric Voltage-Withstand Testspecified in 7.1.9 of UL 489. The test voltage for a circuit breaker or switch rated 690Y/400 shall be basedon 690 V.14 Extreme Ambient Cycling14.1 A WT circuit breaker shall perform succes
41、sfully when operated under conditions indicated in 14.2and 14.3.14.2 Three WT circuit breakers are each to be subjected to temperature cycling without load consistingof 50 cycles of heating and cooling; each cycle consisting of 15 minutes at minus 30C (minus 22F), orat minus 40C (minus 40F) at the m
42、anufacturers option, followed by 15 minutes at 65C (149F) (anyconvenient ramp rate). At the conclusion of the 50 cycles, the representative devices shall be returned toroom temperature 23 3C (73.4 5.4F) for a minimum of 3 hours.14.3 With the WT circuit breaker at 23 3C (73.4 5.4F), the circuit break
43、er shall be subjected to the200 Percent Calibration Test in Section 7.1.2.2 of UL 489. The trip times shall not exceed the allowedlimits as required in Table 7.1.2.2.1 of UL 489.15 Temperature Test15.1 A WT circuit breaker or switch shall be subjected to the Temperature Test as specified in Section7
44、.1.4 of UL 489 except as noted in 15.2.15.2 Parts of a WT circuit breaker or switch shall not exceed the values in Section 7.1.4 and 7.6.5 of UL489 except the temperature rise limits shall be adjusted by subtracting 10C from the allowable rise.16 Electromagnetic Compatibility Test16.1 A solid-state
45、trip WT circuit breaker or switch shall be subjected to the EMC tests as specified inSupplements SA and SB of this Outline.RATINGS17 General17.1 In addition to the rating requirements of Section 8 of UL 489, a WT circuit breaker or switch shallcomply with 17.2 and 17.3.17.2 A WT circuit breaker or s
46、witch shall be rated for one or more voltages, 690 V maximum.17.3 The rated ambient temperature range for a WT circuit breaker shall be minus 30 to +50C (minus22F to +122F), or at minus 40C (minus 40F) at the manufacturers option.APRIL 6, 2012UL 489C10UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTH
47、ER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULMARKINGS18 General18.1 A WT circuit breaker shall be provided with the applicable required markings specified in Section 9of UL 489.18.2 A WT switch shall be provided with the required markings as specified in Section 13 of UL 489.18.3 A WT ci
48、rcuit breaker or switch shall be marked “Wind Turbine” or “WT.” Location Category B.18.4 A WT circuit breaker or switch may also be marked with metric wire sizes, and/or other class andstrand configurations in accordance with 8.2. The marking shall include wire size or wire range, the typeand/or cla
49、ss of wire and the stranding if different from Class B concentric and compressed, or Class Cconcentric. Location Category B.18.5 If a WT circuit breaker or switch has ratings for other applications, the markings shall be clearlyseparate from the WT ratings.18.6 A WT circuit breaker or switch shall be marked with both extremes of the temperature range statedby the manufacturer, in accordance with 17.3. Location Category C.18.7 A WT circuit breaker or switch shall be marked as being suitable for 75C (167F) wire. Devicesinten
