IEEE 21-1942 PDF

Standard No.: IEEE 21-1942
Release Date: 1942
Published By: IEEE - The Institute of Electrical and Electronics Engineers@ Inc.
Status: Be replaced 2014-01
Replace By: IEEE 21-1964
Latest: IEEE 21-1976

Scope: These standards specifically cover the following types of bushings: (a) Outdoor bushings for large apparatus. (b) Cover type bushings for small apparatus. (c) Indoor bushings for all types of apparatus except dry type instrument transformers@ air-blast transformers@ dry type regulators@ and circuit breakers rated below 5@000 volts@ and non-oiltight oil circuit breakers rated 50@000 kva or less. These standards are not intended to apply to wall bushings@ cable potheads@ nor insulators for backconnected disconnecting switches@ although many of the principles may be applicable. The bushing requirements as specified in these standards apply to bushings when mounted for testing in accerdance with specified arrangements as given in the Test Code (Appendix I ) . Requirements when installed in apparatus should be covered by standards for such apparatus

IEEE 21-1942 history

1976 IEEE 21-1976 GENERAL REQUIREMENTS AND TEST PROCEDURE FOR OUTDOOR APPARATUS BUSHINGS
1964 IEEE 21-1964 Requirements and Test Code for OUTDOOR APPARATUS BUSHINGS (Includes ERRATA)
1942 IEEE 21-1942 APPARATUS BUSHINGS AND TEST CODE FOR APPARATUS BUSHINGS
1941 IEEE 21-1941 APPARATUS BUSHINGS and PROPOSED TEST CODE