IEEE C37.04a-2025
IEEE Standard for Ratings and Requirements for AC High-Voltage Circuit Breakers with Rated Maximum Voltage Above 1000 V Amendment 1: Changes to Construction Requirements and Clarification of Certain Related Required Capabilities
| Notice: | Standards that are modifications are not independent documents and must be obtained together with the standard they modify. |
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| Edition date: |
2025-09-24
In Force
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| Available languages: | English |
| Keywords: | bushing transformers|capacitive current switching|electrical controls|electrical endurance|IEEE C37.04(TM)|IEEE C37.04a(TM)|interrupting time|operating duty|pollution levels |
| Scope: | Amendment Standard - Active. Items discovered by users related to discrepancies with other industry standards will be addressed by this amendment: 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, and align material imported from NEMA SG-4 with current industry practices. |
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Modificaciones Normas |
Modifica a IEEE C37.04-2018 |
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