NEMA SPD 1.1-2019 低压配电系统用电涌保护器规范指南

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NEMA SPD1.1-2019

Page 1

NEMA SPD 1.1-2019

Part 1—Surge Protective Device Specification Guide for

Low Voltage Power Distribution Systems

Published by:

National Electrical Manufacturers Association

1300 North 17th Street, Suite 900

Rosslyn, Virginia 22209

www.nema.org

languages, 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.

NEMA SPD1.1-2019

Page 2

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.

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 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, express 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 SPD1.1-2019

Page i

CONTENTS

Section 1 General ......................................................................................................................................... 1

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

1.2 References ....................................................................................................................................... 1

1.3 Definitions ........................................................................................................................................ 2

1.4 Acronyms ......................................................................................................................................... 5

Section 2 SPD Specification Documentation ................................................................................................ 6

Section 3 SPD Ratings .................................................................................................................................. 7

3.1 Introduction ..................................................................................................................................... 7

3.2 SPD Ratings Related to the Operating System ............................................................................... 7

3.3 SPD Ratings Related To Performance .......................................................................................... 10

Section 4 Specification Checklist ................................................................................................................ 15

Annex A Additional Information (Informative Only) ..................................................................................... 17

Annex B General Earthing (Grounding) Practices (Informative Only) ........................................................ 19

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摘要：

NEMA SPD 1.1-2019《低压配电系统用电涌保护器规范指南》为低压配电系统中电涌保护器（SPD）的选型、应用与安全要求提供规范指导。它帮助工程师、项目设计和运维人员理解SPD在抑制瞬态过电压、保护敏感电气电子设备、提升供电可靠性方面的作用，并可作为招投标、合规审查、设计选型和工程验收的参考依据。本指南适用于工业、商业及建筑低压配电场景，有助于降低雷击、开关操作等引起的电涌风险，保障系统安全稳定运行。

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