1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1004-2 Impedance Protected MotorsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER
2、REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Impedance Protected Motors, UL 1004-2 Second Edition, Dated January 10, 2014 Summary of Topics This revision of ANSI/UL 1004-2, the Standard for Impedance Protected Motors, was issued to incorporate the following chan
3、ges: Removed the cheesecloth requirement from the locked-rotor temperature and endurance tests The revised requirements are substantially in accordance with Proposal(s) on this subject dated December 19, 2014. Text that has been changed in any manner or impacted by ULs electronic publishing system i
4、s marked with a vertical line in the margin. Changes in requirements are marked with a vertical line in the margin and are followed by an effective date note indicating the date of publication or the date on which the changed requirement becomes effective. All rights reserved. No part of this public
5、ation may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides this Standard as is without warranty of any kind, either expressed or implied, including but not li
6、mited to, the implied warranties of merchantability or tness for any purpose. In no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of prots, lost savings, loss of data, or any other damages arising out of the use of or the inability to
7、 use this Standard, even if UL or an authorized UL representative has been advised of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards fo
8、r Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer syst
9、em. The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, gures, and/or other elements of the Standard having future effective dates as indicated in the note following the affected item. The prior text for requirements that have been revised and that hav
10、e a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. FEBRUARY 6, 2015 UL 1004-2 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL FEBRUARY 6, 2015 UL 1004-2 tr2 No Text on This Page
11、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 10, 2014 (Title Page Reprinted: February 6, 2015) 1 UL 1004-2 Standard for Impedance Protected Motors First Edition September, 2008 Second Edition January 10, 2014 This ANSI/UL Standard
12、 for Safety consists of the Second Edition including revisions through February 6, 2015. The most recent designation of ANSI/UL 1004-2 as an American National Standard (ANSI) occurred on February 4, 2015. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or
13、 effective date information. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at http:/. ULs Standards for Safety are copyrighted b
14、y UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2015 UNDERWRITERS LABORATORIES INC. ANSI/UL 1004-2-2015UL CO
15、PYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 10, 2014 IMPEDANCE PROTECTED MOTORS - UL 1004-2 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTR
16、ODUCTION 1 Scope .4 PERFORMANCE 2 General 4 3 Locked-Rotor or No-Load Temperature Test .5 4 Endurance Test 7 MARKINGS 5 General 7 JANUARY 10, 2014 IMPEDANCE PROTECTED MOTORS - UL 1004-2 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTROD
17、UCTION 1 Scope 1.1 This Standard is intended to be read together with the Standard for Rotating Electrical Machines General Requirements, UL 1004-1. The requirements in this Standard supplement or amend the requirements in UL 1004-1. The requirements of UL 1004-1 apply unless modied by this Standard
18、. 1.2 This Standard applies to motors that rely solely upon the impedance of the motor windings to prevent overheating. 1.3 This Standard applies to motors rated 600 volts or less. 1.4 This Standard does not apply to: a) Motors employing a device that serves as a motor protector and a manual motor c
19、ontroller; b) Motors employing a motor protector with contacts that control a relay coil in a motor starter; c) Sealed (hermetic) type compressor motors; or d) Impedance protected motors employing an automatic starting switch. PERFORMANCE 2 General 2.1 A motor that uses alternate major insulation sy
20、stem component materials shall have each material subjected to the Endurance Test, Section 4. Following the tests, the motor shall not exhibit an increased risk of re or electric shock. Exception: It shall not be necessary to repeat the Endurance Test, Section 4, to evaluate the suitability of the a
21、lternate material when all the following are met: a) The alternate major insulation system component is of the same geometry, the same polymeric class (thermoplastic/thermoset), and is other than the magnet wire; b) The Electrical and Mechanical Tensile Strength RTIs of the alternate material are, a
22、t a minimum, equal to the rating of the insulation system; and c) The heat deection temperature for the alternate material is either as high as or higher than: 1) The highest temperature plus 10C recorded during the Locked-Rotor or No-Load Temperature Test, Section 3, conducted on the motor original
23、ly; or 2) The heat deection temperature for the original material. JANUARY 10, 2014 IMPEDANCE PROTECTED MOTORS - UL 1004-2 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2.2 It shall not be necessary to repeat the Endurance Test, Section 4
24、, for alternate minor insulation system components. 3 Locked-Rotor or No-Load Temperature Test 3.1 Deleted February 6, 2015 3.2 The three motors are to be stalled, and the locked rotor wattage of each measured. The same three motors are to be run no-load. The sample exhibiting the highest wattage in
25、 either condition is then to be either locked in a stationary position using a means of low thermal conductivity or allowed to run no-load (whichever condition results in the highest wattage consumption). 3.3 Testing of a permanent-split capacitor motor is to be conducted with the capacitor either p
26、roperly connected in the circuit or short-circuited, whichever results in the higher temperature. Exception No. 1: A motor that employs an integrally mounted and enclosed capacitor is not required to be tested with the capacitor short-circuited. Exception No. 2: A motor that employs a capacitor eval
27、uated to the construction and testing requirements in the Standard for Capacitors, UL 810, is not required to be tested with the capacitor short-circuited. 3.4 Temperatures are to be measured: a) By the change-in-resistance method; or b) With a thermocouple applied directly to the actual conductor m
28、aterial, integrally applied conductor insulation, or coil wrap, as applicable. 3.5 Starting at room temperature, the motor is to be energized continuously for 72 hours, during which the winding temperatures are to be monitored continuously until thermal equilibrium is attained and then continuously
29、for the nal hour. Exception: The test may be discontinued when the winding temperatures normalized to 40C (104F) stabilize at a constant temperature not exceeding the maximum temperature for the insulation class as specied in Table 32.1 of UL 1004-1. The Endurance Test, Section 4, is not required to
30、 be performed. 3.6 During the 72 hours, the motor shall comply with all of the following: a) The coil temperature shall not exceed the temperature limits specied in Table 3.1. b) The fuse in the grounding conductor shall not open. c) The motor shall still be capable of operating electrically. For ex
31、ample, a bearing failure is considered in compliance. d) There shall be no electrical or mechanical malfunction of any associated component parts such as capacitors. e) A secondary protector shall not have operated. 3.6 revised February 6, 2015 FEBRUARY 6, 2015 IMPEDANCE PROTECTED MOTORS - UL 1004-2
32、 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Table 3.1 Maximum temperatures Locked rotor or no load temperature test Motor insulation system Maximum temperature C (F) Class A 150 (302) Class E 165 (329) Class B 175 (347) Class F 200 (39
33、2) Class H 225 (437) Class N 245 (473) Class R 265 (509) 3.7 A polyphase motor shall additionally be tested under single phasing conditions. The motor is to be energized with one supply conductor open circuited. For asymmetrical motor windings, the test is to be repeated until all phases have been s
34、ingly opened. 3.8 At the request of the manufacturer, the test in this Section is to be conducted under such conditions that result in the motor coils operating at the maximum temperature for the insulation class specied in Table 3.1. The maximum temperature is to be obtained by: a) Increasing the t
35、est voltage; b) Increasing the ambient temperature; c) Using test samples constructed so that they maintain the maximum temperature; or d) Any other equivalent means. This test shall not be conducted by increasing the voltage for motors with the capacitor shorted. 3.9 When a worst-case condition (su
36、ch as speed of a multi-speed motor or frequency) is not evident, a motor shall be tested at each condition until thermal stabilization. The condition resulting in the highest operating temperature is then to be subjected to the full Locked Rotor or No-Load Temperature Test, Section 3, and Endurance
37、Test, Section 4. 3.10 Immediately following the conclusion of the Locked-Rotor or No-Load Temperature Test, and while still in a heated state, a motor shall be subjected to the Dielectric Voltage-Withstand Test, Section 37, of UL 1004-1. FEBRUARY 6, 2015 IMPEDANCE PROTECTED MOTORS - UL 1004-2 6UL CO
38、PYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 4 Endurance Test 4.1 Immediately following the Locked-Rotor or No-Load Temperature Test, Section 3, a motor is to be re-energized under the conditions of that test for an additional 15 days. Excepti
39、on: If the maximum coil winding temperature measured during the Locked-Rotor or No-Load Temperature Test, Section 3, does not exceed the normal temperature limits for the insulation class as specied in Table 32.1 of UL 1004-1, then the Endurance Test shall not be required. 4.2 If a Locked-Rotor Endu
40、rance Test is interrupted prior to its completion (15 days), the manufacturer is to be given the option of restarting the test from the beginning with a new sample, or continuing the test with the original motor, at the point where it was interrupted until the cumulative 15 days has elapsed. If the
41、test is restarted and the motor complies with the acceptance criteria noted in 4.3 4.5, then the results are to be considered acceptable. If the motor does not comply with one or more of the criteria, then at the manufacturers discretion, the test may be repeated with a new sample. 4.3 At the conclu
42、sion of the 15 days, the motor shall comply with the following: a) The fuse in the grounding conductor shall not open. b) The motor shall still electrically operate. For example, a bearing failure is considered in compliance. c) A secondary protector shall not have operated. 4.4 Immediately followin
43、g the conclusion of the Endurance Test, and while still in a heated state, a motor shall withstand the dielectric voltage withstand test specied in 4.5. 4.5 There shall be no dielectric breakdown as the result of a one-minute application of a potential of twice the marked rated voltage of the motor
44、between the windings and the frame. MARKINGS 5 General 5.1 The words “Impedance-Protected” shall be marked on the outside of the motor where visible. Exception: A motor having a rated input of 100 watts or less may be marked “Z.P.” or ZP instead of “Impedance-Protected”. 5.2 A motor rated 1/8 horsep
45、ower (93 W) or more shall be marked with the rated horsepower. 5.3 An alternating-current motor rated 1/2 horsepower (373 W output) or more shall be marked with a code letter to indicate locked-rotor amperes in accordance with the National Electrical Code, NFPA 70. The National Electrical Code and N
46、EC are registered trademarks of the National Fire Protection Association, Inc., Quincy, MA 02169. JANUARY 10, 2014 IMPEDANCE PROTECTED MOTORS - UL 1004-2 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 5.4 A wound-rotor induction motor shal
47、l be marked with the secondary volts and full-load amperes. 5.5 A direct-current motor shall be marked to indicate the winding type straight shunt, stabilized shunt, compound, or series. 5.6 A multi-speed motor, other than a shaded-pole or a permanent-split-capacitor motor, shall be marked with the amperes and horsepower at each speed. JANUARY 10, 2014 IMPEDANCE PROTECTED MOTORS - UL 1004-2 8
