Active PAR

PC37.04a

Standard for Ratings and Requirements for AC High-Voltage Circuit Breakers with Rated Maximum Voltage Above 1000 V Amendment: Changes to construction requirements and clarification of certain related required capabilities

This amendment will address items discovered by users related to discrepancies with other industry standards: Harmonize pollution levels for normal service condition. Improve definition of low temperature requirements. Further define requirements for capacitive switching class C0. Clarify required electrical service capability. Harmonize temperature limitations for contacts in non-oxidizing gases. Improve definition of interrupting time. Implement requirements from IEEE C37.11 which are more properly in C37.04 Align material imported from NEMA SG-4 with current industry practices.

Sponsor Committee
PE/SWG - Switchgear
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Status
Active PAR
PAR Approval
2021-12-08

Working Group Details

Society
IEEE Power and Energy Society
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Sponsor Committee
PE/SWG - Switchgear
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Working Group
HVCB-WG_C37.04 - High Voltage Circuit Breaker Standard Working Group
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IEEE Program Manager
Jennifer Santulli
Contact
Working Group Chair
John Webb
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C37.04-2018

IEEE Standard for Ratings and Requirements for AC High-Voltage Circuit Breakers with Rated Maximum Voltage Above 1000 V

The rating structure for all high-voltage circuit breakers, which include all voltage ratings above 1000 V ac and comprise both indoor and outdoor types, is covered in this standard. Preferred ratings are also provided. Typical circuit breakers covered by these standards have maximum voltage ratings ranging from 4.76 kV through 800 kV, and continuous current ratings of 600 A, 1200 A, 2000 A, 3000 A, and 4000 A associated with the various maximum voltage ratings. The rating structure establishes the basis for all assigned ratings, including continuous current, insulation capability (formerly dielectric withstand voltages), short-circuit current, transient recovery voltage, and capacitor switching, plus associated capabilities such as mechanical endurance, load current, and out-of-phase switching. Generator circuit breakers are covered by IEC/IEEE Std 62271-37-013.

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C37.04-1999

IEEE Standard Rating Structure for AC High-Voltage Circuit Breakers

This standard covers the rating structure for all high-voltage circuit breakers, which include all voltage ratings above 1000 V ac and comprise both indoor and outdoor types having the preferred ratings as listed in ANSI C37.06-1997. Typical circuit breakers covered by these standards have maximum voltage ratings ranging from 4.76 kV through 800 kV, and continuous current ratings of 600 A,1200 A, 2000 A, and 3000 A associated with the various maximum voltage ratings. The rating structure establishes the basis for all assigned ratings, including continuous current, dielectric withstand voltages,short-circuit current, transient recovery voltage, and capacitor switching, plus associated capabilities such as mechanical endurance, load current, and out-of-phase switching. This standard does not cover generator circuit breakers, which are covered in IEEE Std C37.013-1997.

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No Inactive-Withdrawn Standards
No Inactive-Reserved Standards
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