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  • ASTM
    D1533-12 Standard Test Method for Water in Insulating Liquids by Coulometric Karl Fischer Titration
    Edition: 2012
    $93.60
    Unlimited Users per year

Description of ASTM-D1533 2012

ASTM D1533 - 12

Standard Test Method for Water in Insulating Liquids by Coulometric Karl Fischer Titration

Active Standard ASTM D1533 | Developed by Subcommittee: D27.06

Book of Standards Volume: 10.03




ASTM D1533

Significance and Use

4.1 Electrical characteristics of an insulating liquid may be affected deleteriously by excessive water content. A high water content may make a dielectric liquid unsuitable for some electrical applications due to deterioration of properties such as the dielectric breakdown voltage.

4.2 These tests are suitable for use in acceptance specifications, in control of processing, and in evaluating the condition of dielectric liquids in service.

1. Scope

1.1 This test method covers the measurement of water present in insulating liquids by coulometric Karl Fischer titration. This test method is used commonly for test specimens below 100?% relative saturation of water in oil. The coulometric test method is known for its high degree of sensitivity (typically 10 ?g H 2 O). This test method requires the use of equipment specifically designed for coulometric titration.

1.2 This test method recommends the use of commercially available coulometric Karl Fischer titrators and reagents.

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4 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 practice and determine the applicability of regulatory limitations prior to use. For specific precautionary statements see 8.1 and A2.1 .


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

IEC Standard

IEC60814: Insulating Liquids--Oil-Impregnated Paper and Pressboard--Determination of Water by Automatic Coulometric Karl Fischer Titration American National Standards Institute, 11 West 42nd Street, New York, NY 10036-8002.

ASTM Standards

D923 Practices for Sampling Electrical Insulating Liquids

D3613 Practice for Sampling Insulating Liquids for Gas Analysis and Determination of Water Content


Keywords

coulometric Karl Fischer titration; free water; Karl Fisher method; Karl Fischer reagent; moisture content; solvent verification solutions; water content;


ICS Code

ICS Number Code 29.040.10 (Insulating oils)


DOI: 10.1520/D1533-12

ASTM International is a member of CrossRef.

ASTM D1533

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ASTM 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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