1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational Differences ForUL 60947-4-2Low-Voltage Switchgear and Controlgear - Part 4-2: Contactors and Motor-Starters - ACSemiconductor Motor Controllers and StartersUL COPYRIGHTED MATERIAL NOT AU
2、THORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational Differences ForUL 60947-4-2Low-Voltage Switchgear and Controlgear - Part 4-2: Contactors and Motor-Starters - AC SemiconductorMotor Controllers and StartersEdition: 1Edition Date: March 21, 2014This First Edition of
3、ANSI/UL 60947-4-2 is a bi-national IEC-based standard covering ACSemiconductor Motor Controllers and Starters. It is based on the Edition 2.2 of IEC 60947-4-2.Please note that the national difference document incorporates all of the national differences forUL 60947-4-2.This document provides a singl
4、e listing of the National Differences included in the UL adoption ofthe corresponding IEC standard.All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, ortransmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwisewit
5、hout prior permission of UL.UL provides this standards document as is without warranty of any kind, either expressed or implied,including but not limited to, the implied warranties of merchantability or fitness for any purpose.In no event will UL be liable for any special, incidental, consequential,
6、 indirect or similar damages,including loss of profits, lost savings, loss of data, or any other damages arising out of the use of or theinability to use this standards document, even if UL or an authorized UL representative has been advisedof the possibility of such damage. In no event shall ULs li
7、ability for any damage ever exceed the pricepaid for this standards document, regardless of the form of the claim.Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold ULharmless from and against any loss, expense, liability, damage, claim, or judgment (in
8、cluding reasonableattorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronicStandard on the purchasers computer system.Copyright Underwriters Laboratories Inc.MARCH 21, 2014NATIONAL DIFFERENCES FOR UL UL 60947-4-22UL COPYRIGHTED MATERIAL NOT AUTHORIZED
9、FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULPrefaceThis document provides a single listing of the technical National Differences included in the UL adoptionof the corresponding IEC standard.In its IEC-based standards, UL uses the notations indicated below to identify national d
10、ifference type, andthese types are additionally noted in this document. The standard may not use all types of thesedeviations.D1 - These are deviations which are based on basic safety principles and requirements, elimination ofwhich would compromise safety for U.S. consumers and users of products.D2
11、 - These are deviations based on safety practices. These are deviations for IEC requirements that maybe acceptable, but adopting the IEC requirements would require considerable retesting or redesign on themanufacturers part.DC - These are deviations based on the component standards and will not be d
12、eleted until a particularcomponent standard is harmonized with the IEC component standard.DE - These are deviations based on editorial comments or corrections.DR - These are deviations based on the national regulatory requirements.Each national difference contains a description of what the national
13、difference entails. Typically one of thefollowing words is used to explain how the text of the national difference is to be applied to the base IECtext:Addition / Add - An addition entails adding a complete new numbered clause, subclause, table,figure, or annex. Addition is not meant to include addi
14、ng select words to the base IEC text.Deletion / Delete - A deletion entails complete deletion of an entire numbered clause, subclause,table, figure, or annex without any replacement text.Modification / Modify - A modification is an altering of the existing base IEC text such as theaddition, replacem
15、ent or deletion of certain words or the replacement of an entire clause,subclause, table, figure, or annex of the base IEC text.MARCH 21, 2014 NATIONAL DIFFERENCES FOR UL UL 60947-4-2 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational D
16、ifferences1DV DC Modification of 1 by adding the following:1DV.1 Circuit breakers used as short-circuit protective devices in combination startersand protected starters shall comply with the requirements of Annex DVB, Table DVB.3, Ref.No. 3. IEC 60947-2 Part 2: Circuit-breakers does not apply.1DV.2
17、Disconnect switches shall comply with the requirements of Annex DVB, TableDVB.3, Ref. No 1. IEC 60947-3 Part 3: Switches, disconnectors, switch-disconnectors andfuse combination units does not apply.1DV.3 Fuses used as short-circuit protective devices in combination and protectedstarters shall compl
18、y with the requirements of Annex DVB, Table DVB.3, Ref. No. 2.1DV.4 Molded case switches in combination with fuses used as short-circuit protectivedevices in combination starters shall comply with the requirements of Annex DVB, TableDVB.3, Ref. No. 3, and Annex DVB, Table DVB.3, Ref. No. 2.1DV.5 Cla
19、use 1.1DV.1.1 of part 1 is applicable.2DV DC Modification of 2 by adding the following:For a list of national normative standards, see Annex DVB, Table DVB.1, and Table DVB.2for normative reference standards. See informative Annex DVC for component standards.3.1.32DV D2 Addition:Combination motor co
20、ntroller: A single device or single assembly of devices thatprovides the combined functions of branch circuit disconnect means, short circuitprotection, motor overload protection, and control for one motor branch circuit.3.1.33DV D2 Addition:Motor controller: A device or group of devices that serve
21、to govern in somepredetermined manner the electric power delivered to the motor. A motor controller israted in horsepower, kilowatts, or locked-rotor and full-load amperes.5.3.1.1DV D2 Modification of 5.3.1.1 by adding the following:The rating of a.c. equipment shall include the number of phases exc
22、ept that the rating ofequipment intended for single-phase use only is not required to include the number ofphases.5.3.2.3DV D2 Modification of 5.3.2.3 by adding the following:For horsepower rated devices, see Annex DVA.MARCH 21, 2014NATIONAL DIFFERENCES FOR UL UL 60947-4-24UL COPYRIGHTED MATERIAL NO
23、T AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL5.3.3DV D2 Modification by replacing 5.3.3 with the following:The rated frequency is 60 Hz unless otherwise specified.5.4DV D2 Modification of 5.4 by adding the following:The equipment rating and load designation shall be
24、 in accordance with Table 5.4DV.1. InCanada and the United States, utilization categories do not apply; however, a utilizationcategory may be assigned.Table 5.4DV.1 Ratings of a device controlling an external loadLoad Type Equipment Rating Additional Load DesignationsMotor Controller (Standard ratin
25、g) Horsepower See Annex DVAMotor Controller (Non-standard rating) FLA and LRA NoneMotor for Elevator Control Horsepower or FLA and LRA Elevator DutyTable 19DV D2 Modify Table 19 with the following:The lower limiting values of Tpdo not apply.6.1DV D2 Modification of 6.1 by replacing items (k) and (l)
26、 with the following:k) declaration of an impulse withstand voltage rating is optional except whenevaluating creepage and clearance distances per subclause 7.1.4 of IEC 60947-1.l) IP ratings are optional in North America. Enclosure Type ratings are requiredper subclause 7.1.12 of IEC 60947-1.6.2DV D2
27、 Modification to 6.2 by adding the following:6.2DV.1 Markings6.2DV.1.1 Locations of required markings shall be as shown in Table 6.2DV.1.1.MARCH 21, 2014 NATIONAL DIFFERENCES FOR UL UL 60947-4-2 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM U
28、LTable 6.2DV.1.1 Markings (6.2DV.1)Clause reference Required markingaLocationbEnclosed OpenMotor controllers6.2DV.2.1 Motor controller short circuit current rating / protectivedevice / Group installationACCautionary markings for motor controllersc6.2DV.2.2 Marking for motor controllers having high a
29、vailable faultcurrent ratingAAOverload relays6.2DV.3.1 Combination of manual and automatic reset position A A6.2DV.3.2 Automatic restart of motor A B6.2DV.3.3 Current transformer for use with electronic overloadrelaysAC6.2DV.3.4 Relay trip class designation and tripping current A B6.2DV.3.5 Ambient
30、temperature rating for non-ambientcompensated overload relaysABCombination motor controllers6.2DV.4.1 Combination motor controller overload A A6.2DV.4.2 Combination motor controller, short circuit rating A B6.2DV.4.3 Combination motor controller used on a specific voltage A BCautionary markings for
31、combination motor controllersc6.2DV.4.4 Combination motor controller with instantaneous tripcircuit breakerAA6.2DV.4.5 Field conversion of fuse holders A ATable 8.2.2DV.1.1,Footnote bFuse replacement, Class G or K A AaThis is a brief summary of marking requirements. All of the clauses that require m
32、arking are listed.bFor marking locations identified below, A is considered the highest order of location, and B is considered thelowest order of location. At the option of the manufacturer, a higher order of location category may be used.A. For enclosed devices, marking shall be visible:1. When the
33、cover is removed or the door is open;2. When other devices are mounted nearby as indicated;3. When devices are installed side by side; and4. When accessory parts, such as a disconnect switch operating handle, are attached asintended.For open type devices, marking shall be on a separable, self-adhesi
34、ve permanent label that isshipped with the device.B. Marking is visible when the device is mounted singularly, such as on the side of the device,and is not required to be visible after installation.C. Marking is shipped separately with the device. In addition, the device shall be marked with arefere
35、nce to the information such as diagram or document number.cCautionary markings Cautionary markings shall be located on a part that is not capable of being removed withoutimpairing the operation or appearance of the equipment. A cautionary marking intended to instruct the operator shallbe legible and
36、 visible to the operator during normal operation of the equipment. A marking that provides servicinginstructions shall be legible and visible when such servicing is being performed.MARCH 21, 2014NATIONAL DIFFERENCES FOR UL UL 60947-4-26UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION
37、ORDISTRIBUTION WITHOUT PERMISSION FROM UL6.2DV.2 Motor controller markings6.2DV.2.1 A motor control device, an overload relay, or equipment incorporating anoverload relay shall be marked to indicate the maximum level of short circuit testing andthe intended short circuit protective devices used in t
38、he installation:a) For devices subjected to standard fault short circuit test only, the short circuitcurrent and voltage rating shall be marked, Suitable For Use On A CircuitCapable Of Delivering Not More Than _ rms Symmetrical Amperes,_ Volts Maximum.b) For devices subjected to group installation s
39、hort circuit tests, the devicesshall be marked, Suitable for motor group installation in addition to marking in(a).c) For devices subjected to high fault short circuit tests, the marking in (a) or (b)above shall also include the following:1) When Protected by _ Class Fuses or2) When Protected By A C
40、ircuit Breaker Having An Interrupting RatingNot Less Than _ rms Symmetrical Amperes, _ VoltsMaximum.d) When the short circuit tests are conducted with fuses only, the marking in (a)or (b) above shall include Use Fuses Only.e) When short circuit tests are conducted with a protective device with anamp
41、ere rating less than the maximum capable of being used for the short circuittest, the marking shall additionally include the type of protective device used andthe maximum size of the protective device.6.2DV.2.2 Motor controllers intended for use on circuits having high available faultcurrents shall
42、be marked with the word WARNING and the following or equivalent, Theopening of the branch-circuit protective device is able to be an indication that a faultcurrent has been interrupted. To reduce the risk of fire or electric shock, current-carryingparts and other components of the controller should
43、be examined and replaced ifdamaged., or equivalent. This marking may be combined with 6.2DV.3.5. In Canada, theequivalent French wording is as follows: “AVERTISSEMENT Louverture du dispositif deprotection de la drivation peut signifier quun courant de dfaut a t interrompu. Pourrduire le risque dince
44、ndie ou de choc lectrique, les pices porteuses de courant etautres composants du contrleur devraient tre examines et remplaces sils sontendommags.”MARCH 21, 2014 NATIONAL DIFFERENCES FOR UL UL 60947-4-2 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSIO
45、N FROM UL6.2DV.3 Overload relay markings6.2DV.3.1 A combination manual or automatic-reset overload relay shall be marked toindicate whether the relay is set in either the manual or automatic position.6.2DV.3.2 Equipment employing an automatic reset overload relay and having noprovisions for undervol
46、tage protection, such as momentary start/stop contact and holdingcircuit, shall be marked to indicate that a motor connected to the circuit is able to startautomatically when the relay is in the automatic reset position.6.2DV.3.3 Current transformer for use with overload relays When the overload rel
47、ay isnot provided with the intended current transformer, the overload relay shall be marked withthe model or catalog number and name of the manufacturer; or turns ratio frequency andmaximum signal (current) that can be applied to the input of the overload relay.6.2DV.3.4 The relay trip class designa
48、tion and the tripping current of the overload relay(non-interchangeable element or tripping current on table) shall be marked.6.2DV.3.5 The outside ambient temperature of 40C on which the rating of the overloadrelay is based shall be marked. This requirement does not apply to an ambient-compensated
49、overload relay.6.2DV.4 Combination motor controller markings6.2DV.4.1 A combination motor controller incorporating a separate overload relay shalladditionally be provided with markings indicating the rating or other designation of theprotective device to be used with each overload-relay current element, or the range offull-load motor current.6.2DV.4.2 Short-circuit rating A combination motor controller shall be markedShort-Circuit Current Rating, _ Amperes rms Symmetrical, _
