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): QXZFStandard Number: UL 1004-5Standard Title: Standard for Fire Pump MotorsEdition Date: May 9, 2014Edition Number: 2Section / Paragraph Reference: Sections
3、1, 3, 8, 9, 10 and 11Subject: Revised requirements to support motors rated greater than 500 hp andexcess of 600V, additional requirements for IEC design N motors, additionalrequirements for single phase motors, and clarification for measuring thelocked-rotor current.DECISION:1.2 This Standard covers
4、 Design B polyphase motors, as defined in NEMA MG 1, Motors and Generators,rated 500 horsepower (373 kW) or less, 600 volts or less, that are intended for use in accordance withNFPA 20, the Standard for the Installation of Centrifugal Fire Pumps applications.1.2A This Standard also covers motor rate
5、d greater than 500 hp (373Kw) that are intended for use inCentrifugal Fire Pump applications.3 General3.1 A motor for use with fire pumps shall be polyphase Design B, as defined in NEMA MG 1, Motors andGenerators.Exception: A motor complying with Exceptions No. 1 and No. 2 of Clause 10.2 is consider
6、ed to meet theintent of Clause 3.13.2 Fire pump motors intended for use with variable speed drives shall additionally meet the requirementsof NEMA MG-1, Motors and Generators, Part 31, Definite Purpose Inverter Fed Polyphase Motors.Exception: A motor complying with UL 1004-8, Inverter Duty Motors, i
7、s considered to fulfill the requirementof Clause 3.2.8 Locked Rotor Test for Fire Pump Motors8.2 One sample of the motor is to be operated for 123 seconds at rated voltage and frequency with therotor locked. The current is to be measured during the test. After the locked-rotor operation, and while s
8、tillin a heated condition, the motor shall be subjected to the Dielectric Voltage-Withstand Test of UL 1004-1without evidence of electrical breakdown. The motor shall operate after the application of the dielectricpotential.Exception: Motors marked in accordance with 11.3 shall comply with Table 2 o
9、f IEC 60034-12 “Rotatingelectrical machines Part 12: Starting performance of single-speed three-phase cage induction Motors”for maximum locked-rotor apparent power calculations.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable 8.1Maximum l
10、ocked-rotor current based on 230 volts, 60 hertzPower rating Locked-rotor current,polyphase (single phase)amperes, at 60 hertzMotor Designation (NFPA70 Locked Rotor IndicatingCode Letter) “F” to andIncludingKilowatts (Horsepower)0.37 (1/2) 20 R0.56 (3/4) 25 P0.75 (1) 30 N1.12 (1-1/2) 40 (40) M1.49 (
11、2) 50 (50) L2.24 (3) 64 (70) K3.73 (5) 92 (100) J5.59 (7-1/2) 127 (150) H7.46 (10) 162 (200) H11.2 (15) 232 G14.9 (20) 290 G18.6 (25) 365 G22.4 (30) 435 G29.8 (40) 580 G37.3 (50) 725 G44.7 (60) 870 G55.9 (75) 1085 G74.6 (100) 1450 G93.2 (125) 1815 G112 (150) 2170 G149 (200) 2900 G186 (250) 3650 G224
12、 (300) 4400 G261 (350) 5100 G298 (400) 5800 G336 (450) 6500 G373 (500) 7250 GNOTE 1: For three-phase applications, these values are rms symmetrical values (average of the three phases). There is aone-half cycle instantaneous peak value that can range from 1.8 to 2.8 times the above values as a funct
13、ion of the motordesign, switching angle, and the circuit X/R ratio. This is based upon operation at an ambient temperature of 25C (77F).NOTE 2: Motors rated higher than 373kW (500 Hp) shall have a proportionately higher locked-rotor current e.g. a 746kW(1000 Hp) motor would have a 14500A locked-roto
14、r current limit.STANDARD NUMBER: UL 1004-5 -2-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable 8.2Maximum locked-rotor current values based on 380 volts, 50 hertzPower rating Locked-rotor current,amperes, at 50 hertzMotor Designation (NFP
15、A70 Locked Rotor IndicatingCode Letter) F to andIncludingKilowatts (Horsepower)0.75 (1 or less) 20 P1.12 (1-1/2) 27 N1.49 (2) 34 M2.24 (3) 43 L3.73 (5) 61 K5.59 (7-1/2) 84 J7.46 (10) 107 H11.2 (15) 154 H14.9 (20) 194 H18.6 (25) 243 H22.4 (30) 289 H29.8 (40) 387 H37.3 (50) 482 H44.7 (60) 578 H55.9 (7
16、5) 722 H74.6 (100) 965 H93.2 (125) 1207 H112.0 (150) 1441 H149.0 (200) 1927 H186.5 (250) 2534 H223.8 (300) 3026 H261.1 (350) 3542 H298.4 (400) 4046 H335.7 (450) 4539 H373.0 (500) 5069 HNOTE 1 See Table 8.1.NOTE 2 For motors rated at 380 volts starting currents when operated at 400 Vac and 415 Vac ar
17、e increased by no lessthan 5.3% (400/380) or by 9.2% (415/380). These multipliers do not include the effects of increased saturation current at thehigher voltages.NOTE 2 Motors rated higher than 373kW (500 Hp) shall have a proportionately higher locked-rotor current e.g. a 746kW(1000 Hp) motor would
18、 have a 10138A locked-rotor current limit .STANDARD NUMBER: UL 1004-5 -3-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable 9.1Pump Inertia ExamplesMotor Horsepower Pump total weight moment of inertia(Lbft2)50 475 6100 8150 52200 60300 7040
19、0 94500 112Note 1: These values do not represent actual pump values.Note 2: For motors rated above 500 hp, the value should be proportionately higher (e.g. a 1000 Hp motor would have224 Lbft2)10 Design B Compliance Tests Operational Tests 10.2 The motor locked-rotor torque, breakdowntorque, and pull
20、-up torque shall be equal to or greater than the values in Table 10.1, Table 10.2, and Table10.3.Exception No. 1: Motors marked in accordance with 11.3 shall comply with the locked-rotor torque,breakdown torque and pull-up torque limits in IEC 60034-12, “Rotating electrical machines Part 12:Starting
21、 performance of single-speed three-phase cage induction Motors.”Exception No. 2: Single phase motors marked in accordance with 11.4 shall comply with the locked-rotortorque, breakdown torque and pull-up torque limits in “NEMA MG-1, Part 12 Test and Performance ACMotors”.Table 10.1Minimum locked-roto
22、r torque, as a percentage of full load torqueHp Synchronous speed, rpm (60/50 Hz)3600/3000 1800/1500 1200/1000 900/750 720/ 600/ 514/1/2 140 140 115 1103/4 175 135 135 115 1101 275 170 135 135 115 1101-1/2 175 250 165 130 130 115 1102 170 235 160 130 125 115 1103 160 215 155 130 125 115 1105 150 185
23、 150 130 125 115 1107-1/2 140 175 150 125 120 115 11010 135 165 150 125 120 115 11015 130 160 140 125 120 115 11020 130 150 135 125 120 115 11025 130 150 135 125 120 115 11030 130 150 135 125 120 115 11040 125 140 135 125 120 115 11050 120 140 135 125 120 115 11060 120 140 135 125 120 115 11075 105
24、140 135 125 120 115 110100 105 125 125 125 120 115 110STANDARD NUMBER: UL 1004-5 -4-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable 10.1 ContinuedHp Synchronous speed, rpm (60/50 Hz)3600/3000 1800/1500 1200/1000 900/750 720/ 600/ 514/125
25、 100 110 125 125 115 115 110150 100 110 120 120 115 115 200 100 100 120 120 115 250 70 80 100 100 307080105400 over 350 7080450 70 80500 70 80 Table 10.2Minimum breakdown torque, as a percentage of full load torqueHp Synchronous speed, rpm (60/50 Hz)3600/3000 1800/1500 1200/1000 900/750 720/ 600/ 51
26、4/1/2 225 200 200 2003/4 275 220 200 200 2001 300 265 215 200 200 2001-1/2 250 280 250 210 200 200 2002 240 270 240 210 200 200 2003 230 250 230 205 200 200 2005 215 225 215 205 200 200 2007-1/2 200 215 205 200 200 200 20010 125 200 200 200 200 200 200 200150 200 200 200 200 200 200 200 200 200 200
27、200 200 250 175 175 175 175 30350175175175400 500over 350STANDARD NUMBER: UL 1004-5 -5-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable 10.3Minimum pull-up torque, as a percentage of full load torqueHp Synchronous speed, rpm (60/50 Hz)360
28、0/3000 1800/1500 1200/1000 900/750 720/ 600/ 514/1/2 100 100 100 1003/4 120 100 100 100 1001 190 120 100 100 100 1001-1/2 120 175 115 100 100 100 1002 120 165 110 100 100 100 1003 110 150 110 100 100 100 1005 105 130 105 100 100 100 1007-1/2 100 120 105 100 100 100 10010 100 115 105 100 100 100 1001
29、5 100 110 100 100 100 100 10020 100 105 100 100 100 100 10025 100 105 100 100 100 100 10030 100 105 100 100 100 100 10040 100 100 100 100 100 100 10050 100 100 100 100 100 100 10060 100 100 100 100 100 100 10075 95 100 100 100 100 100 100100 95 100 100 100 100 100 100125 90 100 100 100 100 100 10015
30、0 90 100 100 100 100 100 200 90 90 100 100 100 250 65 75 90 90 306575905400 over 350 6575450 65 75500 65 75 MARKINGS11 General11.3 Fire pump motors in accordance with Exception 1 of 10.2 shall be marked “IEC Design N” orequivalent.11.4 Single phase fire pump motors in accordance with Exception 2 of
31、10.2 shall be marked “NEMADesign M” or equivalent.RATIONALE FOR DECISION:This Certification Requirement Decision is intended to document present practice with respect to thefollowing:1) Expansion of scope to include motors rated above 500 hp and/or higher than 600V:STANDARD NUMBER: UL 1004-5 -6-UL C
32、OPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUL has observed an increased demand for motors with characteristics outside the MG-1 definition forNEMA Design B. Motors which have NEMA Design B characteristics are industry-accepted generalpurpose
33、motors suited for fire pump motor applications.The characteristics which make design B motors acceptable for fire pump motor applications areindependent of voltage. Expanding the scope provides requirements for installations where high currentsare a concern.Similarly, motors rated above 500 hp are b
34、eing requested for larger installations. Since operatinglocked-rotor torques, break-down torques and pull-up torques level off after 350 horsepower, expandingthis above 500 hp (373 kW) provides requirements for these applications.2) Motors construction in accordance with IEC general purpose operatin
35、g characteristics (IEC design N):IEC Design N motors are typically considered to be general purpose motors suitable for fire pump motorapplications and are considered comparable to NEMA Design B motors. They possess similarperformance characteristics and locked-rotor currents.3) Inclusion of single
36、phase motors rated 1-1/2 to 10 hp:Some jurisdictions have begun using fire pump motors in residential or small commercial applicationswhere only single phase power is available. Expanding the scope provides requirements for these generalpurpose/pump applications (NEMA Design M compliant).4) Editoria
37、l changes to clarify when locked-rotor current measurements are made and references to UL1004-8, the standard for inverter duty motors:UL 1004-5 originally referenced MG-1, Part 31 for motors that were intended to be supplied from aninverter. Since the publication of the standard, UL 1004-8, Inverte
38、r Duty Motors, has been published andwas based on the requirements contained in MG-1, a reference to UL 1004-8 is being added.Additionally, the locked-rotor test is being adjusted from 12 sec. to 3 sec. The measured locked-rotorcurrent can drop significantly over the span of a 12 second locked-rotor
39、 test due to heating. The purposeof the test was to ensure the maximum current did not unintentionally trip a breaker or other protectivedevice. By measuring the current within the first 3 seconds, the point of measurement is more consistent,and gives better certainty that a motor will work as inten
40、ded in an emergency. Temperatures are notrecorded during this test and so there is no reduction to safety by making the measurement take place inthe smaller timeframe.Lastly, since the locked-rotor/KVA codes are required by the National Electrical Code, these codes are notneeded in the UL standard.C
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42、 the opinion of Underwriters Laboratories Inc. inpractically applying the requirements of the standard. They do not represent formal interpretations of thestandard under American National Standards Institute (ANSI) processes. UL shall not be responsible toanyone for the use of or reliance upon Certi
43、fication Requirement Decisions by anyone. UL shall not incurany obligation or liability for damages, including consequential damages, arising out of or in connectionwith the use or reliance upon Certification Requirement Decisions. The electronic version of theCertification Requirement Decision is t
44、he current version and previously printed copies may be outdated.STANDARD NUMBER: UL 1004-5 -7-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULThis document is published as a service to ULs certification customersSTANDARD NUMBER: UL 1004-5 -8-
