Superseded Standard

AIEE 1B-1944

AIEE Report on Guiding Principles for the Specification of Service Conditions in Electrical Standards

In the various standards there will be found a number of different situations regarding Usual Service Conditions. The following three are typical. 1. The group where the maximum ambient temper­ature is specified. The Standards for Bushings, Fuses, Lightning Arresters, Protector Tubes and Potential Devices where 40 C ambient is used and Marine Equipment where 50 C ambient is used are typical of this group. 2. The group where both the maximum and daily average temperatures of the cooling medium are specified. Standards for Transformers, Regulators and Neutral Grounding Devices are typical of this group. 3. The group where a higher ambient temperature is specified for silver contacts than for copper con­tacts. Standards for Circuit Breakers, Air Switches and Switchgear Assemblies are typical of this group. It is suggested that a selection of one of the fol­lowing groups can be made for the statement of Usual Service Conditions in most of the standards for specific equipment.

Superseded Standard
Board Approval

Working Group Details

Other Activities From This Working Group

Current projects that have been authorized by the IEEE SA Standards Board to develop a standard.

No Active Projects

Standards approved by the IEEE SA Standards Board that are within the 10-year lifecycle.

No Active Standards

These standards have been replaced with a revised version of the standard, or by a compilation of the original active standard and all its existing amendments, corrigenda, and errata.

No Superseded Standards

These standards have been removed from active status through a ballot where the standard is made inactive as a consensus decision of a balloting group.

No Inactive-Withdrawn Standards

These standards are removed from active status through an administrative process for standards that have not undergone a revision process within 10 years.

No Inactive-Reserved Standards
Subscribe to our Newsletter

Sign up for our monthly newsletter to learn about new developments, including resources, insights and more.