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IEEE 4a-2001

IEEE Standard for High-Voltage Testing Techniques
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IEEE 4a-2001

IEEE Standard for High-Voltage Testing Techniques

PUBLISH DATE 2001
PAGES 12
IEEE 4a-2001
Amendment Standard - Superseded. This amendment sets forth a number of clarifications and corrections to IEEE Standard Techniques for High-Voltage Testing.
This amendment is applicable to dielectric tests with alternating voltages and impulse voltages, when testing an apparatus with air gaps up to 1 meter in length. It specifies correction factors for air density and humidity, which may be applied when the specific apparatus standard allows. This amendment is to be applied in conjunction with IEEE Std 4-1995, IEEE Standard Techniques for High-Voltage Testing. The paragraph numbering beginning at 1.3.5, equations, and figure numbers are as they were in IEEE Std 4-1978. Thus a reference to this amendment for a specific clause, etc., will be the same as in the original standard.
This amendment adds the air density and humidity correction factors of the 1978 version of IEEE Std 4 to be used with the standardized rod-gap data when testing apparatus with air gaps up to 1 meter in length. Dielectric test voltage atmospheric correction factors The atmospheric correction factors listed in 1.3.5 may be applied for gap spacing up to 1 meter in length to the standardized rod-rod gap sparkover data for impulse test voltages found in 17.7, Table 11 of IEEE Std 4-1995.
SDO IEEE: Institute of Electrical and Electronics Engineers
Document Number 4
Publication Date March 21, 2001
Language en - English
Page Count 12
Revision Level a
Supercedes
Committee Power System Instrumentation and Measurements
Publish Date Document Id Type View
May 10, 2013 4-2013 Revision
Oct. 12, 1995 4-1995 Revision
Nov. 30, 1977 4-1978 Revision