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IEEE approves guide for specs of high-voltage circuit breakers


February 21, 2009
By Anthony Capkun

IEEE has approved a new power switchgear standard, IEEE C37.12, “Guide for Specifications of High-Voltage Circuit Breakers (over 1000 Volts)”. The specs in this new standard apply to all indoor and outdoor types of AC high-voltage circuit breakers rated above 1000 volts.

IEEE
has also approved IEEE C37.04b, “IEEE Standard for Rating Structure for
AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis –
Amendment to Change the Description of Transient Recovery Voltage for
Harmonization with IEC 62271-100”.




It has
also approved a revision of IEEE C37.13, “Standard for Low-Voltage AC
Power Circuit Breakers Used in Enclosures”, to modify all dimensional
information to provide metric dimensions to gain global acceptance of
this standard.




The
group has revised IEEE C37.27, “Application Guide for Low-Voltage AC
Power Circuit Breakers Applied with Separately Mounted Current-Limiting
Fuses”. Previously titled “Low-Voltage AC Non-integrally Fused Power
Circuit Breakers (Using Separately Mounted Current-Limiting Fuses)”,
the new standard also slightly revises the scope of the document.




Finally,
IEEE has approved work to begin on a new standard amendment,
PC37.13.1a, “IEEE Standard for Definite Purpose Switching Devices for
Use in Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear –
Amendment: Revise Short-Circuit Rating and Test Requirement”. This
amendment will revise short-circuit rating clause 5.5 and add tests
requirements to short-circuit tests clause 8.1.8.




CLICK HERE for more information on the IEEE Standards Association.