1、NEMA Standards PublicationNational Electrical Manufacturers AssociationNEMA ICS 2-2000 (R2005)Industrial Control and Systems Controllers, Contactors and Overload Relays Rated 600 VoltsNEMA Standards Publication ICS 2-2000 (R2005) (Incorporates 3/2008 Errata) Industrial Control and Systems Controller
2、s, Contactors and Overload Relays Rated 600 Volts Published by: National Electrical Manufacturers Association 1300 North 17th Street, Suite 1752 Rosslyn, Virginia 22209 www.nema.org Copyright 2001 by the National Electrical Manufacturers Association. All rights including translation into other langu
3、ages, reserved under the Universal Copyright Convention, the Berne Convention for the Protection of Literary and Artistic Works, and the International and Pan American Copyright Conventions. THIS STANDARD CONSISTS OF THE FOLLOWING PARTS: Part 1 General Standards for Manual and Magnetic Controllers P
4、art 2 AC Noncombination Magnetic Motor Controllers Rated 600 Volts Part 3 Nonmagnetic Motor Controllers Part 4 Overload Relays Part 5 DC General-Purpose Constant-Voltage Controllers Part 6 AC Combination Motor Controllers Part 7 Magnetic Lighting Contactors Part 8 Disconnect Devices for Use in Indus
5、trial Control Equipment Annex A Maintenance of Motor Controllers After a Fault Condition ICS 2- 2000 Page i CONTENTS PART 1 GENERAL STANDARDS FOR MANUAL AND MAGNETIC CONTROLLERS 1. GENERAL 1-1 1.1 Referenced Standards . 1-1 1.2 Scope . 1-2 1.3 Normative References . 1-2 2. DEFINITIONS. 1-2 3. CLASSI
6、FICATION OF MANUAL AND MAGNETIC CONTROLLERS 1-2 3.1 Class A Controllers 1-2 3.2 Class B Controllers 1-2 3.3 Class V Controllers 1-3 4. CHARACTERISTICS AND RATINGS 1-3 5. PRODUCT MARKING, INS TALLATION, AND MAINTENANCE INFORMATION 1-3 5.1 Maintenance . 1-3 5.2 Marking 1-3 6. SERVICE AND STORAGE CONDI
7、TIONS . 1-3 7. CONSTRUCTION 1-3 7.1 Sizes of Terminals for External Power Connections 1-3 7.2 Mechanical Interlocking of Manual and Magnetic Contactors 1-4 7.3 Electrical Interlocking of Magnetic Contactors . 1-4 8. PERFORMANCE REQUIREMENTS AND TESTS . 1-4 8.1 Make and Break Design Test . 1-4 8.2 Ra
8、nge of Coil Operating Voltage . 1-4 8.3 Short-Time Capability Tests . 1-4 8.4 Temperature Rise Test of Coils and Current-Carrying Parts . 1-5 9. APPLICATION 1-5 9.1 Estimated short - circuit performance. . 1-5 9.2 Control-Circuit Transformers 1-5 Part 2 AC NONCOMBINATION MAGNETIC MOTOR CONTROLLERS R
9、ATED 600 VOLTS 1. GENERAL 2-1 1.1 Scope . 2-1 1.2 Normative References . 2-1 2. DE FINITIONS. 2-1 3. CLASSIFICATION 2-1 3.1 Classification by Starting Methods . 2-1 3.2 Full-Voltage Controllers 2-1 ICS 2- 2000 Page ii 3.3 Part-Winding Controllers 2-1 3.4 Full-Voltage Two-Speed Motor Controllers 2-2
10、3.5 Reduced-Voltage Controllers . 2-2 4. CHARACTERISTICS AND RAT INGS 2-5 4.1 Horsepower and Current Ratings . 2-5 4.2 Short-Circuit Current Ratings . 2-8 4.3 Nonmotor Load Applications Ratings of the Contactor Portion of the Controllers . 2-8 5. PRODUCT MARKING, INSTALLATION, AND MAINTENANCE INFORM
11、ATION 2-9 5.1 General Maintenance . 2-9 5.2 Maintenance After a Fault 2-9 6. SERVICE AND STORAGE CONDITIONS . 2-9 7. CONSTRUCTION 2-9 7.1 Control Transformer Overcurrent Protection 2-9 7.2 Terminals and Connections . 2-9 7.3 Location of Overload Relay Contacts in Circuit 2-10 8. PERFORMAN CE REQUIRE
12、MENTS AND TESTS . 2-11 8.1 General 2-11 8.2 Performance Tests . 2-11 8.3 Short-Time Operating Capability 2-11 8.4 Short-Time Surge Capability 2-11 8.5 Design Test for Short-Circuit Current Ratings for Noncombination Controllers . 2-12 9. APPLICATION 2-12 9.1 Selection of Pushbuttons for Use with Mag
13、netic Controllers . 2-12 9.2 Nonmotor Load Applications 2-12 9.3 Capacitor Applications . 2-12 9.4 Controller Comparisons . 2-13 PART 3 NONMAGNETIC MOTOR CONTROLLERS 1. GENERAL 3-1 1.1 Scope . 3-1 1.2 Normative References . 3-1 2. DEFINITIONS. 3-1 3. CLASSIFICATION 3-2 4. CHARACTERISTICS AND RATINGS
14、 3-2 4.1 Horsepower and Current Ratings of Manually Operated and Motor-Operated Controllers 3-2 4.2 Ratings of Drum Controllers . 3-2 4.3 Contact Ratings of Pressure, Temperature, and Liquid-Level Motor Controllers . 3-3 4.4 Ratings of Resistors for Motor Secondary Circuits 3-3 ICS 2- 2000 Page iii
15、5. PRODUCT MARKING, INSTALLATION, AND MAINTENANCE INFORMATION 3-3 6. SERVICE AND STORAGE CONDITIONS . 3-3 7. CONSTRUCTION 3-3 7.1 Current Carrying Capacity of Resistors 3-3 7.2 Face-Plate Type Controllers 3-3 7.3 Drum Controller Conduit Connections . 3-3 8. PERFORMANCE REQUIREMENTS AND TESTS . 3-3 9
16、. APPLICATION 3-4 PART 4 OVERLOAD RELAYS 1. GENERAL 4-1 1.1 Scope . 4-1 1.2 Normative References . 4-1 2. DEFINITIONS. 4-1 3. CLASSIFICATION 4-3 3.1 Inverse-Time Overload Relays . 4-3 3.2 Instantaneous Overload Relays . 4-3 4. CHARACTERISTICS AND RATINGS 4-3 4.1 Overload Relay Types 4-3 4.2 Overload
17、 Relay Current Rating 4-4 4.3 Overload Relay Time-Current Characteristics 4-4 4.4 Overload Relay Limit of Self Protection . 4-4 4.5 Overload Relay Ambient Temperature Sensitivity 4-5 4.6 Control-Circuit Contact Ratings 4-5 4.7 Solid-State Control Circuit Ratings . 4-5 4.8 Solid-State Overload Relays
18、 with External Control Power Source . 4-5 4.9 Line Current Relationship in Polyphase Circuits 4-5 5. PRODUCT MARKING, INSTALLATION, AND MAINTENANCE INFORMATION 4-5 5.1 Identification of Interchangeable Current Elements and Product Information 4-5 5.2 Identification of Overload Relays Using Fixed or
19、Noninterchangeable Current Elements . 4-6 5.3 Preventive Maintenance Guide 4-6 6. SERVICE AND STORAGE CONDITIONS . 4-6 7. CONSTRUCTION 4-6 7.1 Selectable Functions and Settings . 4-6 7.2 Trip Indication. 4-6 7.3 Resetting 4-6 8. PERFORMANCE REQUIREMENTS AND TEST S . 4-7 8.1 Verification Test for Ove
20、rload Relay Current Rating and Time-Current Characteristics 4-7 ICS 2- 2000 Page iv 8.2 Verification Test for Limit of Self-Protection . 4-8 8.3 Verification Test for Overload Relay Ambient Temperature Sensitivity 4-9 8.4 Overload Relay Short-Time Capability . 4-9 8.5 Control-Circuit Output 4-9 8.6
21、Electrical Noise Test for Solid-State Devices . 4-9 8.7 Impulse Withstand Test for Solid-State Devices 4-9 8.8 Operating Memory Test for an Inverse-Time Overload Relay 4-9 9. APPLICATION 4-10 9.1 Current Rating and Time-Current Characteristics 4-10 9.2 Limit of Self Protection . 4-10 9.3 Ambient Tem
22、perature Sensitivity . 4-10 9.4 Cautions on the Use of Automatic Reset . 4-10 9.5 Polyphase Motors Under Single-Phase Operating Conditions. 4-11 9.6 Coordination with Fault-Current Protection 4-11 9.7 Application with Current Transformers . 4-11 9.8 Control-Circuit Contact Rating . 4-11 9.9 Short-Du
23、ration Overcurrent Effect 4-11 9.10 Overload Relay Limitations 4-11 PART 5 DC GENERAL- PURPOSE CONSTANT- VOLTAGE CONTROLLERS 1. GENERAL 5-1 1.1 Scope . 5-1 1.2 Normative References . 5-1 2. DEFINITIONS. 5-1 3. CLASSIFICATION 5-1 3.1 Types of Full-Voltage Class B Magnetic Controllers 5-1 3.2 Reduced-
24、Voltage Class B Magnetic Controllers for General-Purpose Applications 5-1 3.3 For Motors Having a 2 to 1 or Less Speed Range by Field Control . 5-2 3.4 For Motors Having a Speed Range in Excess of 2 to 1 by Field Control . 5-2 4. CHARACTERISTICS AND RATINGS 5-3 4.1 Horsepower Ratings of DC Drum Swit
25、ches . 5-3 4.2 Horsepower Ratings of Full-Voltage Manually Operated DC Controllers . 5-3 4.3 Horsepower Ratings of Full-Voltage DC Magnetic Controllers 5-3 4.4 Horsepower Ratings of Reduced-Voltage DC Magnetic Controllers 5-3 5. PRODUCT INFORMATION, INSTALLATION, AND MAINTENANCE 5-3 6. SERVICE AND I
26、NSTALLA TION CONDITIONS . 5-3 7. CONSTRUCTION 5-4 7.1 Manual Controllers . 5-4 ICS 2- 2000 Page v 7.2 Manual Speed Regulators 5-4 7.3 Resistor Classification for Manual Controllers . 5-4 8. PERFORMANCE REQUIREMENTS AND TESTS . 5-4 8.1 Short-Time Surge Capability for Class B Controllers . 5-4 8.2 Cir
27、cuit Opening Test 5-4 9. APPLICATION 5-4 PART 6 AC COMBINATION MOTOR CONTROLLERS 1. GENERAL 6-1 1.1 Scope . 6-1 1.2 Normative References . 6-1 2. DEFINITIONS . 6-1 3. CLASSIFICATION 6-1 4. CHARACTERISTICS AND RATINGS 6-2 4.1 Ratings of Combination Motor Controllers . 6-2 4.2 Oil Pump Controllers 6-2
28、 4.3 Irrigation Pump Controllers 6-2 4.4 Short-Circuit Current Ratings of Class A Combination Motor Controllers 6-2 5. PRODUCT MARKING, INSTALLATION AND MAINTENANCE INFORMATION 6-2 5.1 Preventive Maintenance Guide 6-2 5.2 Specific Maintenance Instructions 6-2 5.3 Maintenance of Combination Motor Con
29、trollers After a Fault Condition 6-2 6. SERVICE AND STORAGE CONDITIONS . 6-3 7. CONSTRUCTION 6-3 7.1 Components of Combination Motor Controllers . 6-3 7.2 Enclosures 6-3 7 .3 AC Automatic Combination Oil Field Controllers 6-4 7.4 AC Automatic Combination Irrigation Pump Controllers . 6-5 8. PERFORMA
30、NCE REQUIREMENTS AND TESTS 6-6 8.1 Design Test for Short-Circuit Current Ratings for Combination Controllers . 6-6 9. APPLICATION 6-6 PART 7 MAGNETIC LIGHTING CONTACTORS 1. GENERAL 7-1 1.1 Scope . 7-1 1.2 Normative References . 7-1 2. DEFINITIONS. 7-1 3. CLASSIFICATION 7-1 ICS 2- 2000 Page vi 4. CHA
31、RACTERISTICS AND RATINGS 7-1 5. PRODUCT MARKING, INSTALLATION, AND MAINTENANCE INFORMATION 7-1 6. SERVICE AN D STORAGE CONDITIONS . 7-1 7. CONSTRUCTION 7-2 8. PERFORMANCE REQUIREMENTS AND TESTS . 7-2 8.1 Design Tests 7-2 8.2 Short-Time Capability. 7-2 9. APPLICATIONS . 7-2 PART 8 DISCONNECT DEVICES
32、FOR USE IN INDUSTRIAL CONTROL EQUIPMENT 1. GENERAL 8-1 1.1 Scope . 8-1 1.2 Application Basis 8-1 1.3 Normative References . 8-1 2. DEFINITIONS. 8-1 3. CLASSIFICATION 8-2 4. CHARACTERISTICS AND RATINGS 8-3 4.1 Circuit breaker ratings 8-3 4.2 Molded-case switch ratings 8-3 4.3 Motor -circuit switch ra
33、tings . 8-3 4.4 Rated insulation voltage . 8-4 5. PRODUCT MARKING, INSTALLATION, AND MAINTENANCE INFORMATION 8-4 5.1 Marking 8-4 5.2 Exception . 8-5 5.3 Other Disconnect Devices for Motor Service . 8-5 5.4 Marking Limitations 8-5 5.5 Operating Handles Sold Separately . 8-5 6. SERVICE AND STORAGE CON
34、DITIONS . 8-5 7. CONSTRUCTION 8-5 7.1 Clearances and Creepage Distances 8-5 7.2 Minimum Air Gap in Open Position 8-6 7.3 Mechanical Design of Operating Handle and Mechanism . 8-6 7.4 External Operating Handles for Disconnect Devices . 8-6 7.5 Status Indication 8-6 7.6 Operating Mechanism for Disconn
35、ect Devices 8-7 7.7 Mechanical Interlock with Door(s) 8-7 7.8 Padlocking Provisions 8-7 7.9 Additional Construction Requirements for Disconnect Devices . 8-7 ICS 2- 2000 Page vii 7.10 Fuse Mounting . 8-7 8. PERFORMANCE REQUIREMENTS AND TES TS . 8-8 8.1 Circuit-Breaker and Molded-Case Type Tests . 8-
36、8 8.2 Motor -Circuit Switch Type Tests 8-8 9. APPLICATIONS . 8-8 9.1 Application of Circuit Breakers . 8-8 9.2 Protection of Nonfused Motor-Circuit Switches 8-8 9.3 Safety Procedure for Verifying Deenergized Condition 8-9 Annex A (Informative) MAINTENANCE OF MOTOR CONTROLLERS AFTER A FAULT CONDITION
37、 A.1 INTRODUCTION . A-1 A.2 PROCEDURES A-1 A.2.1 Enclosure A-1 A.2.2 Disconnect Devices A-1 A.2.3 Terminals and Internal Conductors . A-2 A.2.4 Motor Starter . A-2 A.2.5 Return to Service A-2 ICS 2- 2000 Page viii Foreword This Standards Publication was prepared by a technical committee of the NEMA
38、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 Publication supersedes ICS 2- 1993 This Standards Publication provides practical information concerning ratings, c
39、onstruction, test, performance and manufacture of industrial control equipment. These standards are used by the electrical industry to provide guidelines for the manufacture and proper application of reliable products and equipment and to promote the benefits of repetitive manufacturing and widespre
40、ad product availability. NEMA Standards represent the result of many years of research, investigation and experience by the members of NEMA, its predecessors, its Sections and Committees. They have been developed through continuing consultation among manufacturers, users, and national engineerin g s
41、ocieties and have resulted in improved serviceability of electrical products with economies to manufacturers and users. One of the primary purposes of this Standards Publication is to encourage the production of reliable control equipment which, in itself, functions in accordance with these accepted
42、 standards. Some portions of these standards, such as electrical spacings and interrupting ratings, have a direct bearing on safety; almost all of the items in this publication, when applied properly, contrib ute to safety in one way or another. Properly constructed industrial control equipment is,
43、however, only one factor in minimizing the hazards which may be associated with the use of electricity. The reduction of hazard involves the joint efforts of the various equipment manufacturers, the system designer, the installer and the user. Information is provided herein to assist users and other
44、s in the proper selection of control equipment. The industrial control manufacturer has limited or no control over the following factors which are vital to a safe installation: a. Environmental conditions b. System design c. Equipment selection and application d. Installation e. Operating practices
45、f. Maintenance This publication is not intended to instruct the user of control equipment with regard to these factors except insofar as suitable equipment to meet needs can be recognized in this publication and some application guidance is given. This Standards Publication is necessarily confined t
46、o defining the construction requirements for industrial control equipment and to providing recommendations for proper selection for use under normal or certain specific conditions. Since any piece of industrial control equipment can be installed, operated, and maintained in such a manner that hazard
47、ous conditions may result, conformance with this publication does not by itself assure a safe installation. When, however, equipment conforming with these standards is properly selected and is installed in accordance with the National Electrical Code and properly maintained, the hazards to persons a
48、nd property will be reduced. 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 m
49、etrology practices. 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. ICS 2- 2000 Page ix NEMA Standards Publications are subject to periodic review. They are revised frequently to reflect user input and to meet changing conditions and technical progress. Proposed revisions to this Standards Publication should be submitted to: Vice President, Engineering Departmen
