IEEE C37.20.1-2002
Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear

Standard No.

IEEE C37.20.1-2002

Release Date

2002

Published By

IEEE - The Institute of Electrical and Electronics Engineers@ Inc.

Status

Be replaced 2015-07

Replace By

IEEE C37.20.1-2015

Latest

IEEE C37.20.1-2015

Scope

This standard covers metal-enclosed low-voltage power circuit breaker switchgear assemblies containing@ but not limited to@ such devices as low-voltage power circuit breakers (fused or unfused); other interrupting devices; switches@ control@ instrumentation@ and metering; and protective and regulating equipment. This standard is concerned with enclosed@ rather than open@ indoor and outdoor switchgear assemblies. It includes types of equipment that are part of secondary unit substations. It does not apply to equipment covered by industrial control standards@ communication switchboards@ communication switching equipment@ switchboards for use on board ships@ or dead-front distribution switchboards. In this standard@ metal-enclosed low-voltage power circuit breaker switchgear shall be called LV switchgear. For LV ac switchgear@ the voltage shall be 1000V or below; for LV dc switchgear@ the voltage shall be 3200V or below.

IEEE C37.20.1-2002 history

• 2015 IEEE C37.20.1-2015 Metal-Enclosed Low-Voltage (1000 Vac and below@ 3200 Vdc and below) Power Circuit Breaker Switchgear
• 2002 IEEE C37.20.1-2002 Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear
• 1993 IEEE C37.20.1-1993 Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear
• 1987 IEEE C37.20.1-1987 Metal-Enclosed Low-Voltage Power Circuit-Breaker Switchgear