NEMA ICS 2 9-2002 Industrial Automation Control Products and Systems Starters Contactors and Overload Relays Rated not more than 2000 Volts AC or 750 Volts DC - Part 9 AC Vacuum-Br.pdf

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1、NEMA Standards PublicationNational Electrical Manufacturers AssociationNEMA ICS 2.9-2002 (R2007, R2013)AC Vacuum-Break Magnetic Controllers Rated 1500 Volts ACNEMA Standards Publication ICS 2-2000 Industrial Automation Control Products and Systems: Starters, Contactors, and Overload Relays Rated not

2、 more than 2000 Volts AC or 750 Volts DC Part 9-2002 (R2007, R2013) AC Vacuum-Break Magnetic Controllers Rated 1500 Volts AC Published by National Electrical Manufacturers Association 1300 North 17th Street, Suite 900 Rosslyn, Virginia 22209 www.nema.org Copyright 2013 by the National Electrical Man

3、ufacturers Association. All rig hts including translation into other languages, reserved under the Universal Copyright Convention, the Berne Convention for the Protection of Literary and Artistic W orks, and the International and Pan American Copyright Conventions. NOTICE AND DISCLAIMER The informat

4、ion in this publication was considered technically sound by the consensus of persons engaged in the development and approval of the document at the time it was developed. Consensus does not necessarily mean that there is unanimous agreement among every person participating in the development of this

5、 document. The National Electrical Manufacturers Association (NEMA) standards and guideline publications, of which the document contained herein is one, are developed through a voluntary consensus standards development process. This process brings together volunteers and/or seeks out the views of pe

6、rsons who have an interest in the topic covered by this publication. W hile NEMA administers the process and establishes rules to promote fairness in t he development of consensus, it does not write the document and it does not independently test, evaluate, or verify the accuracy or completeness of

7、any information or the soundness of any judgments contained in its standards and guideline publications. NEMA disclaims liability for any personal injury, property, or other damages of any nature whatsoever, whether special, indirect, consequential, or compensatory, directly or indirectly resulting

8、from the publication, use of, application, or reliance on this document. NEMA disclaims and makes no guaranty or warranty, expressed or implied, as to the accuracy or completeness of any information published herein, and disclaims and makes no warranty that the information in this document will fulf

9、ill any of your particular purposes or needs. NEMA does not undertake to guarantee the performance of any individual manufacturer or sellers products or services by virtue of this standard or guide. In publishing and making this document available, NEMA is not undertakin g to render professional or

10、other services for or on behalf of any person or entity, nor is NEMA undertaking to perform any duty owed by any person or entity to someone else. Anyone using this document should rely on his or her own independent judgment or, as appropriate, seek the advice of a competent professional in determin

11、ing the exercise of reasonable care in any given circumstances. Information and other standards on the topic covered by this publication may be available from other sources, which th e user may wish to consult for additional views or information not covered by this publication. NEMA has no power, no

12、r does it undertake to police or enforce compliance with the contents of this document. NEMA does not certify, test, or inspect products, designs, or installations for safety or health purposes. Any certification or other statement of compliance with any health or safetyrelated information in this d

13、ocument shall not be attributable to NEMA and is solely the responsibility of the certifier or maker of the statement. ICS 2-2000, Part 9-2002 (R2007, R2013) Page i Copyright 2013 by the National Electrical Manufacturers Association CONTENTS Foreword iii Section 1 GENERAL . 1.1 Scope 1 1.2 Purpose 1

14、 1.3 Normative References . 1 Section 2 DEFINITIONS 1 Section 3 CLASSIFICATIONS . 2 Section 4 CHARACTERISTICS AND RATINGS 4.1 Current Ratings . 2 4.1.1 Rated Continuous Current . 2 4.1.2 Rated Operational Current . 2 4.1.3 Rated Locked-Rotor Currents 2 4.2 Voltage Ratings . 2 4.2.1 Rated Operational

15、 Voltages . 2 4.2.2 Rated Insulation Voltage (U i ) . 3 4.3 Basis of Ratings 3 4.3.1 Horsepower Ratings 3 4.3.2 Three-Phase Horsepower Ratings for Plug -Stop, Plug-Reverse, or Jogging Duty . 3 4.4 Maximum Circuit-Closing Inrush Currents 3 4.5 Non-Motor Loads . 3 4.5.1 Resistive and Lighting Loads .

16、3 4.5.2 Transformer Switching . 3 4.5.3 Capacitor Switching . 4 4.6 Short-Circuit Ratings . 4 Section 5 PRODUCT MARKING, INSTALLATION, AND MAINTENANCE INFORMATION 5.1 Product Marking 4 5.1.1 Nameplate or Label Attached to Device . 4 5.1.2 Nameplate, Label or Instruction Material Attached to or Packa

17、ged with Equipment . 5 5.1.3 Shown on or Adjacent to Coil . 5 5.1.4 Shown on Auxiliary Contact . 5 5.2 Marking Limitations . 5 5.3 Instructions for Installation, Operation, and Maintenance . 5 Section 6 SERVICE AND STORAGE CONDITIONS 5 Section 7 CONSTRUCTION. 6 7.1 Clearances and Creepage Distances

18、. 6 7.2 Multi-Pole Operation 6 7.3 Terminals and W iring 6 7.3.1 Terminals 6 ICS 2-2000, Part 9-2002 (R2007, R2013) Page iv Copyright 2013 by the National Electrical Manufacturers Association 7.3.2 Terminal Identification and Connections for Full -Voltage Single-Speed Class V Motor Controllers 6 7.3

19、.3 W iring Space . 7 7.4 Location of Overload Relay Contacts in Circuit . 7 7.5 Mechanical Interlocking of Magnetic Contactors . 7 7.6 Electrical Interlocking of Magnetic Contactors 7 7.7 The Insulation Rating of Current Transformers Used with Class V Controllers 7 Section 8 PERFORMANCE REQUIREMENTS

20、 AND TESTS . 7 8.1 Type Tests 7 8.2 Routine Tests 8 8.3 Compliance with Performance Requirements . 8 8.3.1 Test Sequences 8 8.3.2 Temperature Rise 8 8.3.3 Dielectric Properties 8 8.3.4 Making and Breaking Capacity . 8 8.3.5 Endurance . 9 8.3.6 Ability to Make and W ithstand Short -Circuit Currents .

21、 9 8.3.6.1 Procedure . 9 8.3.6.2 Conductor Type and Size 10 8.3.6.3 Controller Operation 10 8.3.6.4 Test Circuit . 10 8.3.6.5 Overload Relays . 10 8.3.6.6 Standard Short-Circuit Ratings 10 8.3.6.7 Short-Circuit Test Covering Fuses and Circuit Breakers 12 8.3.6.8 Short-Circuit RatingsHigh Capacity 12

22、 8.3.7 Dielectric Re-Verification . 14 8.3.7.1 Short-Circuit Closing Test . 14 8.3.7.2 Test Results . 14 8.3.8 Performance of Terminals . 14 8.3.9 Short-Time Capability 14 8.3.9.1 Maximum Overload . 14 8.3.9.2 Short-Time Surge Capability 14 8.3.9.3 Short-Time Capability Evaluation . 15 8.3.10 Operat

23、ion and Operating Limits . 15 8.3.10.1 Pickup Voltage 15 8.3.10.2 Dropout Voltage 15 Section 9 APPLICATION, TYPICAL METHODS OF STARTING MOTORS. 15 Annex A Nominal Full-Load Currents Corresponding to Three-Phase Motor Horsepower Ratings . 32 Annex B Installation and Maintenance Instructions for 1500

24、Volt Controllers . 33 Annex C Minimum Wire Bending Space . 35 Annex D Maximum Copper Conductor Size for Controller Power Circuit Testing at Not More than 1500 Volts . 36 Copyright 2013 by the National Electrical Manufacturers Association ICS 2-2000, Part 9-2002 (R2007, R2013) Page iii Foreword This

25、Standards Publication was prepared by a technical committee of the NEMA Industrial Automation Control Products and Systems Section. It was approved in accordance with the bylaws of NEMA and supersedes the indicated NEMA Standards Publication. This Standards Publicati on is an addition part to ICS 2-

26、2000 and will be included into that standards publication when it is next revised. This Standards Publication provides practical information concerning ratings, construction, test, performance, and manufacture of industrial control equipment. These standards are used by the electrical industry to pr

27、ovide guidelines for the manufacture and proper application of reliable products and equipment and to promote the benefits of repetitive manufacturing and widespread product availability. NEMA Standards represent the result of many years of research, investigation and experience by the members of NE

28、MA, its predecessors, its Sections and Committees. They have been developed through continuing consultation among manufacturers, users, and national engineering societies and have resulted in improved serviceability of electrical products with economies to manufacturers and users. One of the primary

29、 purposes of this Standards Publication is to encourage the production of reliable control equipment which, in itself, functions in accordance with these accepted standards. Some portions of these standards, such as electrical spacings and interrupting ratings, have a direct bearing on safety; almos

30、t all of the items in this publication, when a pplied properly, contribute to safety in one way or another. Properly constructed industrial control equipment is, however, only one factor in minimizing the hazards which may be associated with the use of electricity. The reduction of hazard involves t

31、he joint efforts of the various equipment manufacturers, the system designer, the installer and the user. Information is provided herein to assist users and others in the proper selection of control equipment. The industrial control manufacturer has limited or no control over the following factors w

32、hich are vital to a safe installation: a. environmental conditions b. system design c. equipment selection and application d. installation e. operating practices f. maintenance This publication is not intende d to instruct the user of control equipment with regard to these factors except insofar as

33、suitable equipment to meet needs can be recognized in this publication and some application guidance is given. This Standards Publication is necessarily confined to defining the construction requirements for industrial control equipment and to providing recommendations for proper selection for use u

34、nder normal or certain specific conditions. Since any piece of industrial control equipment can be installed, operated, and maintained in such a manner that hazardous conditions may result, conformance with this publication does not by itself assure a safe installation. W hen, however, equipment con

35、forming with these standards is properly selected and is installed in accordan ce with the National Electrical Code and properly maintained, the hazards to persons and property will be reduced. Copyright 2013 by the National Electrical Manufacturers Association ICS 2-2000, Part 9-2002 (R2007, R2013)

36、 Page iv To continue to serve the best interests of users of Industrial Control and Systems equipment, the Industrial Automation Control Products and Systems Section is actively cooperating with other standardization organizations in the development of simple and more universal metrology practices.

37、In this publication, the U.S. customary units are gradually being supplemented by those of the modernized metric system known as the International Systems of Units (SI). This transition involves no changes in standard dimensions, tolerances, or performance specifications. NEMA Standards Publications

38、 are subject to periodic review. They are revised frequently t o reflect user input and to meet changing conditions and technical progress. Proposed revisions to this Standards Publication should be submitted to: Vice President, Engineering Department National Electrical Manufacturers Association 13

39、00 North 17th Street, Suite 1752 Rosslyn, Virginia 22209 This standards publication was developed by the Industrial Automation Control Products and Systems Section. Section Approval of the standard does not necessarily imply that all section members voted for its approval or participated in its deve

40、lopment. At the time it was approved, the Section was composed of the following members: ABB Control, Inc.W ichita Falls, TX Alstom Power ConversionPittsburgh, PA Automatic Switch CompanyFlorham Park, NJ Balluff, Inc.Florence, KY Carlo Gavazzi, Inc.Buffalo Grove, IL CMC Torque ConvertersBillerica, M

41、A Control Concepts CorpBeaver, PA Cooper BussmanSt. Louis, MO Cummins, Inc.Minneapolis, MN Cyberex LLCRichmond, VA Eaton CorporationMilwaukee, W I Electro Switch CorporationW eymouth, MA Emerson Process ManagementAustin, TX Entrelec, Inc.Irving, TX GE Industrial SystemsPlainville, CT Hubbell Incorpo

42、ratedMadison, OH Joslyn Clark Controls, Inc.Lancaster, SC Lexington Switch however, more than one test sequence or all test sequences may be conducted on one sample. The sequence of tests shall be as shown in Table 9-8-1. 8.3.2 Temperature Rise The standards of ICS 1 apply. The temperature rise of c

43、urrent -carrying parts of a new controller shall be measured while enclosed when carrying a current corresponding to its rated continuous current on all poles. Conductors shall be selected in accordance with ICS 1, Clause 8. The enclosure shall be the smallest practicable enclosure that provides min

44、imum wire bending space (See Annex C) for the device. The device shall have passed the test if the temperature rise limits of ICS 1, Clause 8 are not exceeded. An open type device shall be mounted in an enclosure considered representative of the intended use. The maximum enclosure dimensions are to

45、be determined by one of the following methods: a. 150 percent of the dimensions of the devicethat is, length, width, and height. b. The intended enclosure, which may be larger than indicated in item a, provided the size is marked on the device, or on instruction material attached to, or packaged wit

46、h, the controller and the enclosure includes the minimum wire bending space specified in Annex C. 8.3.3 Dielectric Properties The power frequency dielectric test procedures of ICS 1, Clause 8 apply. The test voltage shall be 5375 volts (2000 volts plus 2.25 times 1500 volts). The test shall be consi

47、dered to have been passed if there is no puncture, flashover, or indication of breakdown. 8.3.4 Making and Breaking Capacity A vacuum-break controller rated 1500 volts shall be capable of making and breaking currents without failure under the cond itions stated in Table 9-8-2 when wired in accordanc

48、e with the appropriate diagram of Figure 9 -8-1. Diagrams A and B show connections for a device for three - phase and single-phase loads. See Annex A for full-load currents corresponding to horsepower rating s. Copyright 2013 by the National Electrical Manufacturers Association ICS 2-2000, Part 9-20

49、02 (R2007, R2013) Page 9 For the test, equipment shall be mounted in an appropriate enclosure and wired so as to represent the intended use. The contacts shall open completely and close completely when the controller is operated magnetically at rated control voltage. During the test there shall be no permanent arcing, no flashover between poles, no blowing of the fusible element in the simulated ground circuit and no welding of the contacts. 8.3.5 Endurance A vacuum-break controller rated 1500 volts shall be capable of making an d bre