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IEEE PC37.04a
IEEE Approved Draft Standard for Ratings and Requirements for AC High-Voltage Circuit Breakers with Rated Maximum Voltage Above 1000 V - Amendment 1
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STANDARD published on 26.8.2025
The information about the standard:
Designation standards: IEEE PC37.04a
Note: Change
Publication date standards: 26.8.2025
SKU: NS-1223183
Approximate weight : 300 g (0.66 lbs)
Country: International technical standard
Category: Technical standards IEEE
Annotation of standard text IEEE PC37.04a :
Amendment Standard - Active - Draft.
This amendment will address items discovered by users 1 related to discrepancies with other industry standards: Harmonize pollution levels for normal service condition. Further define requirements for capacitive switching class C0. Clarify required electrical service capability. 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.
ISBN: 979-8-8557-1945-1, 979-8-8557-1945-1
Number of Pages: 16
Product Code: STDUD27762, STDAPE27762
Keywords: pollution levels, capacitive current switching, interrupting time, electrical endurance, operating duty, electrical controls, bushing transformers, TEST
Category: Switchgear
Draft Number: PC37.04a/D2.2, Feb 2025 - UNAPPROVED DRAFT, PC37.04a/D2.2, Feb 2025 - APPROVED DRAFT
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