1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational Differences ForUL 60947-1Low-Voltage Switchgear and Controlgear - Part 1: General rulesUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION F
2、ROM ULNational Differences ForUL 60947-1Low-Voltage Switchgear and Controlgear - Part 1: General rulesEdition: 5Edition Date: July 31, 2013This fifth edition of ANSI/UL 60947-1 is a tri-national IEC-based standard covering generalrequirements for industrial control equipment. It is based on the fift
3、h edition of IEC 60947-1.Please note that the national difference document incorporates all of the national differences forUL 60947-1.This document provides a single listing of the National Differences included in the UL adoption ofthe corresponding IEC standard.All rights reserved. No part of this
4、publication may be reproduced, stored in a retrieval system, ortransmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwisewithout prior permission of UL.UL provides this standards document as is without warranty of any kind, either expressed or implied,includin
5、g 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, indirect or similar damages,including loss of profits, lost savings, loss of data, or any other damages arising out of the use of or th
6、einability 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 liability for any damage ever exceed the pricepaid for this standards document, regardless of the form of the claim.Users of the electroni
7、c versions of ULs Standards for Safety agree to defend, indemnify, and hold ULharmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonableattorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronicStandard on t
8、he purchasers computer system.Copyright Underwriters Laboratories Inc.JULY 31, 2013NATIONAL DIFFERENCES FOR UL UL 60947-12UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULPrefaceThis document provides a single listing of the technical National
9、Differences included in the UL adoptionof the corresponding IEC standard.In its IEC-based standards, UL uses the notations indicated below to identify national difference type, andthese types are additionally noted in this document. The standard may not use all types of thesedeviations.D1 - These ar
10、e deviations which are based on basic safety principles and requirements, elimination ofwhich would compromise safety for U.S. consumers and users of products.D2 - These are deviations based on safety practices. These are deviations for IEC requirements that maybe acceptable, but adopting the IEC re
11、quirements would require considerable retesting or redesign on themanufacturers part.DC - These are deviations based on the component standards and will not be deleted until a particularcomponent standard is harmonized with the IEC component standard.DE - These are deviations based on editorial comm
12、ents or corrections.DR - These are deviations based on the national regulatory requirements.Each national difference contains a description of what the national difference entails. Typically one of thefollowing words is used to explain how the text of the national difference is to be applied to the
13、base IECtext:Addition / Add - An addition entails adding a complete new numbered clause, subclause, table,figure, or annex. Addition is not meant to include adding select words to the base IEC text.Deletion / Delete - A deletion entails complete deletion of an entire numbered clause, subclause,table
14、, figure, or annex without any replacement text.Modification / Modify - A modification is an altering of the existing base IEC text such as theaddition, replacement or deletion of certain words or the replacement of an entire clause,subclause, table, figure, or annex of the base IEC text.JULY 31, 20
15、13 NATIONAL DIFFERENCES FOR UL UL 60947-1 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational Differences1DV.1 DE Modification to the NOTE following the fifth paragraph in 1 by adding thefollowing:NOTE The Canadian, Mexican, and United S
16、tates product standards based on the IEC 60947 series are part ofthe series of standards covering low-voltage switchgear and controlgear. See Annex DVB, Table DVB.3, for theCanadian, Mexican, and U.S. standards.1DV.2 DE Modification to 1 by adding 1DV.2.1 1DV.2.4:1DV.2.1 In Canada, manufacturers des
17、igning products for use in Canada can find a helpfulsummary of the equipment-related references of the Canadian Electrical Code, Part I, inCSA publication SPE 2000, “Guide for the Design of Electrical Equipment for Installationand Use in Canada”. In Mexico and the United States, this requirement doe
18、s not apply.1DV.2.2 The user of this standard should be aware that the term “switchgear” as used inIEC 60947-1 has a different definition than the North American definition. Refer to Clause2.1.1 of this standard for the definition.1DV.2.3 In Canada, the Canadian Electrical Code, Part I, requires tha
19、t the disconnectingmeans disconnect all ungrounded conductors of the circuit simultaneously. In Mexico andthe United States, this requirement does not apply.1DV.2.4 In Canada, general requirements applicable to this standard are given in CSAStandard C22.2 No. 0. In Mexico and the United States, this
20、 requirement does not apply.1.1DV.1 D2 Modification to 1.1 by adding the following:1.1DV.1.1 This equipment is intended for installation in accordance with the nationalinstallation codes for use in ordinary locations. See Annex DVB, Table DVB.3, Ref. No. 14.1.1DV.1.2 “IEC 60947-2: Part 2: Circuit-br
21、eakers does not apply. They are covered inAnnex DVB, Table DVB.3, Ref. No. 3.1.1DV.1.3 “IEC 60947-3: Part 3: Switches, disconnectors, switch-disconnectors and fusecombination units” do not apply. They are covered in Annex DVB, Table DVB.3, Ref. No. 1.1.1DV.2 DR Modification to 1.1 by adding 1.1DV.2.
22、1 and 1.1DV.2.2:1.1DV.2.1 In Mexico and the United States, with respect to the national installation codes,equipment operating at 600 V and less is considered low-voltage equipment. In Canada,with respect to the national installation codes, equipment operating at more than 750 V isconsidered high vo
23、ltage equipment.JULY 31, 2013NATIONAL DIFFERENCES FOR UL UL 60947-14UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL1.1DV.2.2 Enclosed equipment intended for use as service equipment is to comply withthe applicable requirements in this standar
24、d and with Annex DVB, Table DVB.3, Ref. No. 7.In Mexico, this requirement does not apply.1.2DV D2 Modification to 1.2 by adding the following:See Table DVB.2 for normative references and Table DVA.1 for component standards.2.1.14DV DR Modification to 2.1.14 by adding the following:2.1.14DV.1 Segment
25、s of the protective conductor connecting various parts together arereferenced by specific terms which identify their location in the grounding system andspecific regulatory requirements for their installation.2.1.14DV.2 In Mexico and the United States, the defined term “equipment groundingconductor”
26、 describes a conductor connecting non-current carrying parts of electricalequipment to the system grounded conductor. In Canada, this conductor is defined as a“bonding conductor”.2.1.14DV.3 In Canada, the defined term grounding conductor describes a conductorconnecting service equipment or a system
27、circuit conductor to the grounding electrode. InMexico and the United States, this conductor is defined as a grounding electrodeconductor.2.1.15DV D2 Modification for 2.1.15 NOTE:NOTE The functions of the neutral conductor and a grounding conductor are not combined into a singleconductor.2.1.22DV D2
28、 AdditionBonding: A low impedance path obtained by permanently joining all non-current-carryingmetal parts to assure electrical continuity and having the capacity to conduct safely anycurrent likely to be imposed on it.2.1.23DV D2 Addition:Ground: A conducting connection, whether intentional or acci
29、dental, between an electriccircuit or equipment and the earth or to some conducting body that serves in place ofthe earth.2.1.24DV D2 AdditionGrounding: Means to limit the voltage to ground on exposed metal parts of enclosuresfor electrical conductors and equipment by connection to a permanent or co
30、ntinuousconductive path to the earth.2.1.25DV D2 Addition:Grounding conductor: A conductor used to connect equipment or the grounded circuit ofa wiring system to a grounding electrode or electrodes.JULY 31, 2013 NATIONAL DIFFERENCES FOR UL UL 60947-1 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTH
31、ER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL2.1.26DV D2 Addition:Grounding electrode conductor: The conductor used to connect the groundingelectrode(s) to the equipment grounding conductor, to the grounded conductor, or toboth, at the service, at each building or structure where supplie
32、d from a commonservice, or at the source of a separately derived system.2.1.27DV D2 Addition:Insulation system: The classification of insulation materials for the purpose ofestablishing temperature limits.2.1.28DV D2 Addition:Field wiring: Conductors installed for connections to external circuits.2.
33、3.22DV D2 Modification to 2.3.22 by adding the following:Field wiring terminal: The term field wiring terminal is equivalent.5.2DV D2 Modification to 5.2 by adding 5.2DV.1 5.2DV.9:5.2DV.1 An accessory that is not shipped from the factory in the same carton as theequipment with which it is intended t
34、o be used shall be plainly marked with:a) The manufacturers name, trademark, or other descriptive marking by whichthe organization responsible for the product may be identified;b) The electrical rating, unless the accessory electrical rating is marked on theequipment for which it is intended; andc)
35、The catalog number or equivalent.The accessory shall be provided with installation and wiring instructions.5.2DV.2 See Table 25DV for marking locations.5.2DV.3 When more than one disconnect switch is required to disconnect all power withina control assembly or compartment, the equipment shall be mar
36、ked with the following orequivalent, “CAUTION Risk of Electric Shock More than one disconnect may berequired to de-energize the equipment before servicing.” In Canada, such equipment shallalso be marked with the following French wording or equivalent: “ATTENTION Risque dechoc lectrique Plusieurs sec
37、tionneurs peuvent tre ncessaires pour couperlalimentation de lappareillage avant dentreprendre lentretien.”5.2DV.4 When field wiring terminals are evaluated for use with other than copperconductors, the equipment shall be marked with the types of conductors to be used, suchas the following: “Use Alu
38、minum Conductors Only” (AL), or “Use Copper or AluminumConductors” (CU/AL) or “Use Copper (CU), Copper-Clad Aluminum, or AluminumConductors” (AL), or “Use Copper (CU) or Copper-Clad Aluminum Conductors.”JULY 31, 2013NATIONAL DIFFERENCES FOR UL UL 60947-16UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FU
39、RTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL5.2DV.5 Equipment shall be marked to indicate the temperature rating, 60C only, 60/75C,or 75C only, used in the evaluation of the power field wiring terminals.5.2DV.6 Torque Markings Equipment shall be marked with the values of tighteningto
40、rque in Newton-meters to be applied to the clamping screws of all field wiring terminals.Control field wiring terminals evaluated for 0.8 Nm are not required to be marked.5.2DV.7 During the temperature test, when the temperature rise on the terminal is 50C orless and an aluminum bodied connector is
41、used or aluminum wire is intended, theconnector shall be marked AL7CU or AL9CU. When the terminal temperature rise exceeds50C and does not exceed 65C, the connector shall be marked AL9CU.5.2DV.8 Equipment incorporating two or more separate circuits intended to be connectedto a common power source sh
42、all be marked: All circuits must be connected to the samepole of the power source, or with an equivalent wording. The wiring diagram of theequipment shall illustrate a typical connection of the various circuits connected to thecommon power source.5.2DV.9 The equipment shall be marked stating which p
43、ressure wire connector orcomponent terminal kits have been evaluated for use with the equipment. A wire connectorof the type mentioned in the marking may be installed in the equipment at the factory withinstructions, when required to effect proper connection of the conductor.5.3DV D2 Modification to
44、 5.3:Instructions regarding EMC do not apply.6.3DV D2 Modification to 6.3 by adding the following:A bolt, screw, or other part used to mount a component of the equipment shall not be usedfor securing the equipment to the supporting surface.7.1.1DV D2 Modification to 7.1.1 by adding 7.1.1DV.1 7.1.1DV
45、.6.1:7.1.1DV.1 Overcurrent protective devices7.1.1DV.1.1 Power circuit protective devices7.1.1DV.1.1.1 The number, arrangement, and ratings or settings of protective devicesintended to provide motor branch-circuit, short-circuit, and ground-fault protection ormotor-overload protection shall be as re
46、quired by Annex DVB, Table DVB.3, Ref. No. 14.7.1.1DV.1.2 Control circuit protective devices7.1.1DV.1.2.1 Control circuit transformer and conductors of control circuits shall beprotected against overcurrent in accordance with Annex DVB, Table DVB.3, Ref. No. 15. InCanada, power and control circuits
47、shall be protected in accordance with Annex DVB,Table DVB.3, Ref. No. 15 and Ref. No. 19.JULY 31, 2013 NATIONAL DIFFERENCES FOR UL UL 60947-1 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL7.1.1DV.1.2.2 In Mexico and the United States, condu
48、ctors for control circuits shall beprovided with overcurrent protection in each ungrounded conductor, located no more than305 mm from the point where the conductor is connected to the source of power. Directleads measuring a maximum of 305 mm long or printed-wiring assemblies having noconnection ext
49、ernal to the equipment are not required to be protected. In Canada, thisrequirement does not apply.7.1.1DV.1.2.3 Unless protected by the power circuit protective device or as noted in7.1.1DV.1.2.4, separate conductor protection shall always be required and a fuse holdershall be provided with the equipment. Protection shall be as follows:When protection is provided by fuses:a) Branch-circuit type fuse: The fuse is not required to be provided with theequipment. When the fuse holder will accept a fuse having a higher current ratingt
