NEMA ICS 1-2022

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NEMA ICS 1-2022

Industrial Control and Systems

General Requirements

Published by:

National Electrical Manufacturers Association

1300 North 17th Street, Suite 900

Rosslyn, VA 22209

www.nema.org

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.

NOTICE AND DISCLAIMER

The information 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 document.

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 persons who have an interest in the topic covered by this publication. While

NEMA administers the process and establishes rules to promote fairness in the development of consensus,

it does not write the document and it does not independently test, evaluate, or verify the accuracy or

completeness of 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 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 fulfill any of your particular

purposes or needs. NEMA does not undertake to guarantee the performance of any individual manufacturer

or seller’s products or services by virtue of this standard or guide.

In publishing and making this document available, NEMA is not undertaking to render professional or 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 determining 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 the user may wish to consult for additional views or

information not covered by this publication.

NEMA has no power, nor 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 safety-related information

in this document shall not be attributable to NEMA and is solely the responsibility of the certifier or maker

of the statement.

NEMA ICS 1-2022

Page i

Contents

Foreword ....................................................................................................................................................... iii

Introduction.................................................................................................................................................... vi

1 General...................................................................................................................................................... 1

1.1 Scope ....................................................................................................................................... 1

1.2 Referenced Standards ............................................................................................................. 1

1.3 Relation to Product Standards ................................................................................................. 2

2 Definitions ................................................................................................................................................ 2

3 Classification .......................................................................................................................................... 13

4 Characteristics and Ratings ................................................................................................................... 13

4.1 General .................................................................................................................................. 13

4.2 Rated Operational or Utilization Voltages (Ue) ....................................................................... 14

4.3 Frequency Ratings ................................................................................................................. 14

4.4 Operating Overload ................................................................................................................ 14

4.5 Undervoltage Release Devices (Low-Voltage Release Devices) .......................................... 14

4.6 Undervoltage Protection Devices (Low-Voltage Protection Devices) .................................... 14

4.7 Overload Devices ................................................................................................................... 14

5 Product Marking, Installation, and Maintenance Information ................................................................. 15

5.1 Installation and Maintenance ................................................................................................. 15

5.2 Apparatus Handling Guidelines .............................................................................................. 15

5.3 Terminations ........................................................................................................................... 16

5.4 Preventive Maintenance of Industrial Control and Systems Equipment ................................ 16

6 Service and Storage Conditions ............................................................................................................ 17

6.1 Usual Service and Installation Conditions ............................................................................. 17

6.2 Storage Temperature ............................................................................................................. 18

7 Construction ........................................................................................................................................... 18

7.1 Insulation Requirements ........................................................................................................ 18

7.2 Spacings ................................................................................................................................ 19

7.3 Terminations .......................................................................................................................... 25

7.4 Protection of Semiconductors in Circuits ............................................................................... 25

7.5 Control-Circuit Overcurrent Protection ................................................................................... 26

7.6 Color Coding of Wiring ........................................................................................................... 29

7.7 Markings of Coils .................................................................................................................... 30

7.8 Product Safety Labels ............................................................................................................ 30

8 Performance Requirements and Tests .................................................................................................. 31

8.1 Design Tests, General ............................................................................................................ 31

8.2 Test Conditions ....................................................................................................................... 31

8.3 Temperature Rise ................................................................................................................... 35

8.4 Dielectric Withstand ............................................................................................................... 38

8.5 Vibration ................................................................................................................................. 40

8.6 Shock ..................................................................................................................................... 41

8.7 Operating Voltage Tests ......................................................................................................... 43

8.8 Application Tests .................................................................................................................... 44

8.9 Production Tests ..................................................................................................................... 46

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摘要：

NEMA ICS 1-2022 是最新版本的美国电气制造商协会（NEMA）发布的工业控制与系统标准，主要涵盖工业控制设备、控制器及相关系统的通用要求与安全规范。该标准为制造商、工程师和系统集成商提供了关于控制器外壳、设备安装、电气连接、环境适应性以及安全操作的关键指导，旨在确保工业控制系统在不同工况下的可靠性与互操作性。NEMA ICS 1-2022 更新了此前版本中关于电路保护、绝缘配合和故障安全设计的内容，并补充了对现代数字化控制组件（如可编程逻辑控制器和智能继电器）的适用要求。遵循该标准有

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