1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1004-8 Inverter Duty MotorsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPROD
2、UCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Inverter Duty Motors, UL 1004-8 Second Edition, Dated November 13, 2013 Summary of Topics This revision of ANSI/UL 1004-8, the Standard for Inverter Duty Motors, has been issued to update the reaffirmation of ANSI approval.
3、 No changes in requirements have been made. Text that has been changed in any manner or impacted by ULs electronic publishing system is 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 indicati
4、ng the date of publication or the date on which the changed requirement becomes effective. These revisions are substantially in accordance with Proposal(s) on this subject dated December 13, 2013. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or tr
5、ansmitted 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 limited to, the implied warranties of merchantability or tness
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7、ative 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 for Safety agree to defend, indemnify, and hold UL harmless fr
8、om 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 system. The requirements in this Standard are now in effect, exc
9、ept 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 have a future effective date are located after the Standard, an
10、d are preceded by a SUPERSEDED REQUIREMENTS notice. FEBRUARY 5, 2014 UL 1004-8 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL FEBRUARY 5, 2014 UL 1004-8 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCT
11、ION OR DISTRIBUTION WITHOUT PERMISSION FROM UL NOVEMBER 13, 2013 (Title Page Reprinted: February 5, 2014) 1 UL 1004-8 Standard for Inverter Duty Motors First Edition September, 2009 Second Edition November 13, 2013 This ANSI/UL Standard for Safety consists of the Second Edition including revisions t
12、hrough February 5, 2014. The most recent designation of ANSI/UL 1004-8 as a Reaffirmed American National Standard (ANS) occurred on February 3, 2014. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date information. Comments or proposals for
13、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 by UL. Neither a printed nor electronic copy of a Standa
14、rd 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 2014 UNDERWRITERS LABORATORIES INC. ANSI/UL 1004-8-2009 (R2014)UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER R
15、EPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL NOVEMBER 13, 2013 INVERTER DUTY MOTORS - UL 1004-8 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .4 2 Glossary .4 CONSTRUCTION 3 Ove
16、rspeeds 5 PERFORMANCE 4 Declared Operating Point Temperature Test 5 5 Breakaway Torque 5 6 Breakdown Torque 6 7 Overspeed Test .6 RATINGS 8 General 6 MARKINGS 9 General 7 NOVEMBER 13, 2013 INVERTER DUTY MOTORS - UL 1004-8 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTI
17、ON WITHOUT PERMISSION FROM UL INTRODUCTION 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
18、apply unless modied by this Standard. 1.2 This Standard applies to squirrel cage polyphase induction motors intended for use with variable voltage and variable frequency controls, commonly referred to as inverters. The requirements in this Standard are intended to evaluate the suitability of the mot
19、or for normal use when fed from an inverter supply through a manufacturer declared range of operating conditions. 1.3 This Standard does not address: a) The efficacy of motor overtemperature protection under abnormal conditions; b) The operation of a motor under unusual service conditions as describ
20、ed in NEMA MG-1, Standard for Motors and Generators, Part 31; nor c) The operation of a motor in hazardous (Classied) locations. 2 Glossary 2.1 For the purpose of this Standard, the following denitions apply. 2.2 BASE RATING (MOTOR) The rating (i.e., torque, horsepower, speed, current, etc.) measure
21、d at the upper end of the constant torque range (operating point 3 of Figure 8.1) of the motors torque/speed curve. This is the rating to be used for the required motor markings specied in Section 9, General. 2.3 BREAKAWAY TORQUE The torque produced at zero speed, also known as starting torque or lo
22、cked rotor torque. 2.4 BREAKDOWN TORQUE The maximum torque before a sudden loss of speed. NOVEMBER 13, 2013 INVERTER DUTY MOTORS - UL 1004-8 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONSTRUCTION 3 Overspeeds 3.1 Motors covered by thi
23、s Standard shall be so constructed that, in an emergency not to exceed 2 minutes, they shall withstand without mechanical damage or without posing a risk of electric shock or re, overspeeds above the maximum declared operating speed in accordance with Table 3.1. Table 3.1 Overspeeds Maximum declared
24、 operating speed Overspeed percent of maximum declared operating speed 1800 and below 25% 1801 3600 20% 3601 and over 15% PERFORMANCE 4 Declared Operating Point Temperature Test 4.1 Temperature tests shall be conducted at representative dened operating points, typically one at each of the four opera
25、ting points declared by the manufacturer in accordance with 8.2. 4.2 Since not all motors have four dened operating points, in such cases, the required temperature tests are to be reduced to the number of dened points declared by the manufacturer. 4.3 Each temperature test is to be conducted and res
26、ults evaluated as specied in 32.2 32.11 of UL 1004-1. 5 Breakaway Torque 5.1 The motor under test is to be coupled to an instrument or device suitable and capable of measuring and displaying torque and to an instrument capable of measuring locked rotor current. The breakaway torque and current are t
27、o be measured. 5.2 The breakaway torque shall be at least 140 percent of the base torque and the current at that torque shall be not more than 150 percent of the base current. NOVEMBER 13, 2013 INVERTER DUTY MOTORS - UL 1004-8 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTR
28、IBUTION WITHOUT PERMISSION FROM UL 6 Breakdown Torque 6.1 The motor under test is to be coupled to a dynamometer suitable and capable of measuring and displaying torque and to a variable frequency, variable voltage source of sufficient current rating to provide the current required at 150 percent ra
29、ted torque at each test frequency. 6.2 The breakdown torque at any frequency within the dened frequency range shall not be less than 150 percent of the rated torque when rated voltage for that frequency is applied. 7 Overspeed Test 7.1 The motor is to be driven to an overspeed consistent with its ma
30、ximum rated speed and in accordance with Table 3.1. The motor is to be maintained at that speed for 2 minutes and then allowed to coast to a stop. 7.2 A dielectric voltage withstand test in accordance with Section 37, Dielectric Voltage-Withstand Test, of UL 1004-1 is to be applied. 7.3 At the concl
31、usion of the dielectric voltage withstand test, the motor is to be disassembled and examined for evidence of mechanical damage or failure. 7.4 The motor shall not exhibit either a dielectric breakdown as a result of the test described in 7.2 nor shall it exhibit evidence of mechanical damage or fail
32、ure. RATINGS 8 General 8.1 Motors covered by this Standard shall be evaluated based upon identication of the four load points illustrated in Figure 8.1. This is generated text for gtxt. NOVEMBER 13, 2013 INVERTER DUTY MOTORS - UL 1004-8 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTIO
33、N OR DISTRIBUTION WITHOUT PERMISSION FROM UL 8.2 The manufacturer shall declare the four operating points illustrated in Figure 8.1 by speed and torque. 8.3 The manufacturer shall declare the maximum and minimum motor speed (frequency). MARKINGS 9 General 9.1 The words Inverter Duty Motor or “Invert
34、er Duty” shall be marked on the outside of the motor where visible. Figure 8.1 Motor rating 1 = Torque at minimum declared speed 2 = Lowest speed of the constant torque range 3 = Highest speed of the constant torque range 4 = Maximum declared speed based on constant horsepower and any mechanical limitation on rotational speed NOVEMBER 13, 2013 INVERTER DUTY MOTORS - UL 1004-8 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL NOVEMBER 13, 2013 INVERTER DUTY MOTORS - UL 1004-8 8 No Text on This Page
