Normas De La Ieee Para Pozos A Tierra

DZS 691: 2006 IEEE Std 80-2000 ICS 75.200

Draft for public comments

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Draft Zambian Standard

GUIDE FOR SAFETY IN AC SUBSTATION GROUNDING
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This draft standard is for public comments only. It must not be used or referred to as a ZambianStandard.

ZAMBIA BUREAU OF STANDARD

DATE OF PUBLICATION
This Zambian Standard has been prepared and published under the authority of the Standards Council of the Zambia Bureau of Standards……………………..

ZAMBIA BUREAU OF STANDARDS
The Zambian Bureau of Standards is the Statutory National Standards Body for Zambia established under an Act of Parliament, the Standards Act, Cap 416 of 1994 of theLaws of Zambia for the preparation and promulgation of Zambian Standards.

REVISION OF ZAMBIAN STANDARDS
Zambian standards are revised, when necessary by the issue either of amendments or of revised editions. It is important that users of Zambian Standards should ascertain that they are in possession of the latest amendments or editions.

CONTRACT REQUIREMENTS
A Zambian Standard does notpurport to include all the necessary provisions of a contract. Users of Zambian Standards are responsible for their correct application..

TECHNICAL COMMITTEE RESPONSIBLE
The preparation of this Zambian Standard was entrusted upon the Electrical Construction Standard Formulation Technical Committee, upon which the following organisations were represented: Copperbelt Energy Corporation PlcEnergy Regulation Board Engineering Institution of Zambia Ministry of Health Ministry of Local Government and Housing Ministry of Mines and Minerals Development National Council for Construction The University of Zambia, School of Engineering Zambia Association of Manufacturers Zambia Bureau of Standards ZESCO Limited

ZAMBIA BUREAU OF STANDARDS, P.O. BOX 50259, ZA 15101 RIDGEWAY, ZAMBIACONTENTS

Page

NATIONAL FOREWORD............................................................................................................................................ 7 ACKNOWLEDGEMENT ............................................................................................................................................. 7 1. OVERVIEW................................................................................................................................................................. 8 1.1 1.2 1.3 SCOPE............................................................................................................................................................ 8 PURPOSE....................................................................................................................................................... 8 RELATION TO OTHER STANDARDS ............................................................................................................ 8

2. REFERENCES ............................................................................................................................................................ 9 3.DEFINITIONS........................................................................................................................................................... 10 4. SAFETY IN GROUNDING.................................................................................................................................... 14 4.1 BASICPROBLEM.................................................................................................................................................. 14 4.2 CONDITIONS OF DANGER ................................................................................................................................... 15 5. RANGE OF TOLERABLE CURRENT ............................................................................................................... 17 5.1 EFFECT OF...