IEEE Std C37.20.1a-2005
Metal-enclosed low-voltage power circuit breaker switchgear - Amendment 1: Short-time and short-circuit withstand current tests - Minimum areas for multiple cable connections

Standard No.

IEEE Std C37.20.1a-2005

Release Date

2005

Published By

Institute of Electrical and Electronics Engineers (IEEE)

Status

Be replaced

Replace By

IEEE Std C37.20.1A-2005(R2007)

Latest

IEEE Std C37.20.1a-2020

Scope

Low-voltage metal-enclosed switchgear-which contains either stationary or drawout, manually or electrically operated low-voltage ac or dc power circuit breakers in individual grounded metal compartments, in three-pole, two-pole, or single-pole construction-is covered. Rated maximum voltage levels are 254 V, 508 V, or 635 V (ac) and 300/325 V, 800 V, 1000 V, 1200 V, 1600 V, or 3200 V (dc). The standard deals with service conditions, ratings, temperature limitations, and classification of insulating materials, insulation (dielectric) withstand voltage requirements, test procedures, and application.

IEEE Std C37.20.1a-2005 history

• 2020 IEEE Std C37.20.1a-2020 IEEE Standard for Metal-Enclosed Low-Voltage (1000 V ac and below, 3200 V dc and below) Power Circuit Breaker Switchgear - Amendment 1: Control and Secondary Circuits and Devices, and All Wiring
• 0000 IEEE Std C37.20.1A-2005(R2007)
• 2005 IEEE Std C37.20.1a-2005 Metal-enclosed low-voltage power circuit breaker switchgear - Amendment 1: Short-time and short-circuit withstand current tests - Minimum areas for multiple cable connections