IEEE 142 ERTA-2014 en Recommended Practice for Grounding of Industrial and Commercial Power Systems《工业和商业电力系统接地用推荐性操作规程》.pdf

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1、17 April 2014 SS95700E IEEE Std 142-2007 IEEE Std 142 -2007 (Revision of IEEE Std 142-1991) Errata to IEEE Recommended Practice for Grounding of Industrial and Commercial Power Systems Sponsor Power Systems Engineering Committee of the IEEE Industry Applications Society Correction Sheet 17 April 201

2、4 Copyright 2014 by the Institute of Electrical and Electronics Engineers. Inc. All rights reserved. Published 2014 Printed in the United States of America. This correction sheet may be freely reproduced and distributed in order to maintain the utility and currency of the underlying Standard. This c

3、orrection sheet may not be sold, licensed or otherwise distributed for any commercial purposes whatsoever. The content of this correction sheet may not be modified. 17 April 2014 SS95700E IEEE Std 142-2007 Subclause 4.3.1 Choice of rods should be corrected as follows because 1/2 inch is 12.7 mm; not

4、 2.7 mm. The second sentence of the first paragraph of 4.3.1 should read: For most applications, the diameters of 12.7, 15.88, and 19.05 mm (1/2, 5/8, and 3/4 in, respectively) are satisfactory. The third sentence of the first paragraph of 4.3.1 should read: The NEC specified that rods of steel or iron shall be at least 15.88 mm (5/8 in) in diameter and that rods of nonferrous materials shall not be less than 12.7 mm (1/2 in) in diameter. The fourth sentence in the third paragraph of 4.3.1 should read: Average soil conditions will permit the use of the 12.7 mm (1/2 in) rod.