IEEE Approved Draft Standard for Ratings and Requirements for AC High-Voltage Circuit Breakers with Rated Maximum Voltage Above 1000 V - Amendment 1
NORMA vydána dne 26.8.2025
Označení normy: IEEE PC37.04a
Poznámka: Změna
Datum vydání normy: 26.8.2025
Přibližná hmotnost: 300 g (0.66 liber)
Země: Mezinárodní technická norma
Kategorie: Technické normy IEEE
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