IEEE Std C37.20.9-2019

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IEEE Standard for Metal-Enclosed

Switchgear Rated 1 kV to 52 kV

Incorporating Gas Insulating Systems

IEEE Std C37.20.9™-2019

IEEE Power and Energy Society

Developed by the

Switchgear Committee

IEEE

3 Park Avenue

New York, NY 10016-5997

USA

IEEE Std C37.20.9™-2019

IEEE Standard for Metal-Enclosed

Switchgear Rated 1 kV to 52 kV

Incorporating Gas Insulating Systems

Developed by

Switchgear Committee

of the

IEEE Power and Energy Society

Approved 21 March 2019

IEEE-SA Standards Board

Abstract: Metal-enclosed switchgear assemblies incorporating gas insulating systems containing,

but not limited to, such devices as interrupter switches; selector switches; fuses; circuit breakers;

control, instrumentation, and metering devices; and protective equipment are covered in this

standard. Equipment for the control and protection of apparatus used for distribution of electrical

power is also included, but not specically limited to, in this standard.

Keywords: IEEE C37.20.9™, metal-enclosed power switchgear, metal-enclosed switchgear

incorporating gas insulating systems (MEGIS), switchgear, switchgear assembly

The Institute of Electrical and Electronics Engineers, Inc.

3 Park Avenue, New York, NY 10016-5997, USA

IEEE is a registered trademark in the U.S. Patent & Trademark Oce, owned by The Institute of Electrical and Electronics Engineers,

Incorporated.

National Electrical Code and NEC are both registered trademarks of the National Fire Protection Association, Inc.

National Electrical Safety Code and NESC are both registered trademarks and service marks of The Institute of Electrical and Electronics

Engineers, Inc.

PDF: ISBN 978-1-5044-5685-2 STD23627

Print: ISBN 978-1-5044-5686-9 STDPD23627

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No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission

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摘要：

IEEE Std C37.20.9-2019 是电气工程领域的重要标准规范，专门针对金属封闭式开关设备在内部故障电弧条件下的性能要求和测试方法进行规定。该标准由电气与电子工程师协会发布，旨在提升中低压开关设备在电弧事故中的安全防护能力，确保设备在发生内部电弧故障时能够有效限制电弧能量、控制电弧持续时间，从而保护操作人员免受烧伤、爆炸冲击及有毒气体的伤害。作为IEEE C37系列标准体系中的关键组成部分，C37.20.9-2019为开关柜制造商、电力系统设计方及运维人员提供了明确的测试程序、评估准

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IEEE Std C37.20.9-2019

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