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Description of ASTM-G165 2012ASTM G165 - 99(2012)Standard Practice for Determining Rail-to-Earth ResistanceActive Standard ASTM G165 | Developed by Subcommittee: G01.10 Book of Standards Volume: 03.02 ASTM G165Significance and Use Low resistance between the rails and earth could result in large magnitudes of stray earth currents with the attendant corrosion damage to underground metallic structures. These measurements are of a low voltage type and are not designed to evaluate the high voltage dielectric characteristics of the rail insulating elements. Sections of track with rail-to-earth resistances less than acceptable minimums must be tested in greater detail to determine the reason(s) for this condition. Determination of the reason(s) for any low rail-to-earth resistance may require the use of special testing techniques or special instruments, or both, beyond the scope of this practice. The electrical tests call for the use of electric meters that have varying characteristics depending on cost, manufacture, and generic type. It is assumed that any person employing the test procedures contained herein will know how to determine and apply proper correction factors and that they will have sufficient knowledge to ensure reasonable accuracy in the data obtained. This practice does not encompass all possible field conditions to obtain rail-to-earth resistance characteristics. No general set of test procedures will be applicable to all situations. 1. Scope 1.1 This practice covers the procedures necessary to follow for measuring resistance-to-earth of the running rails which are used as the conductors for returning the train operating current to the substation in electric mass transit systems. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
ASTM Standards G15 Terminology Relating to Corrosion and Corrosion Testing Keywords direct fixation; mass transit systems; running rails; track ballast; track-to-earth resistance; traction power substations; wooden tie; Electrical continuity; Electrical power systems; Electrical tests; Mass transit; Rail-to-Earth resistance; Running rails; Track-to-Earth resistance; Traction power substations ICS Code ICS Number Code 45.120 (Equipment for railway/cableway construction and maintenance) DOI: 10.1520/G0165-99R12 ASTM International is a member of CrossRef. ASTM G165This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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