ASTM D – Designation: D – 06 /98 Standard Test Method for Corrosive Sulfur in Elec. ASTM D Standard Test Method for Corrosive Sulfur in Electrical Insulating Liquids. standard by ASTM International, 11/15/ View all product details. At that time ASTM D was the only method under the jurisdiction of ASTM Committee D-. 27 on Electrical Insulating Liquids and Gases. The method, which .
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A number in parentheses indicates the year of last reapproval.
A superscript epsilon e indicates an editorial change since the last revision or reapproval. This standard x1275 been adopted for use by government agencies to replace Method of Federal Test Method Standard No. This test method is designed to detect the presence of, or the propensity to form, free elemental sulfur and corrosive sulfur compounds by subjecting copper to d12275 with oil under prescribed conditions.
Method A is the one that has been in place since Method B is more rigorous and the preferred method. Inch-pound units are included for informational purposes.
It is the responsibility of the user of this standard to establish appropriate safety and health practices and dd1275 the applicability of regulatory limitations prior to use. Current edition approved March 1, Originally approved in Last previous edition approved in as D — Summary of Test Methods 3.
This is the preferred method. The presence of corrosive sulfur compounds will result in deterioration of these metals.
ASTM D – 15 – Standard Test Method for Corrosive Sulfur in Electrical Insulating Liquids
The extent of deterioration is dependent upon the quantity and d275 of corrosive agent and time and temperature factors. Detection of these undesirable impurities, even though not in terms atsm quantitative values, is a means for recognizing the hazard involved. A circulating hot-air oven is preferred. Flasks of such capacity are required in order to allow sufficient space for expansion of the oil.
Bottles of such capacity and design are required in order to allow sufficient space for expansion of the oil and eliminate intrusion from atmospheric gases. Your comments will receive careful consideration at a meeting of the responsible technical committee,1 which you may attend.
NOTE 1—It should be noted that grit silicon carbide paper d125 mesh silicon carbide grains have particle sizes of about the same size 63?
In the United States, abrasive papers are classi? Abrasive powders are classi? Carefully take the copper strip from the? Do not use pressurized air to dry copper strip. NOTE 4—The corrosive effects of unstable sulfur compounds present in the oil are reduced when aged under strong oxidizing conditions such as when oxygen is present.
Aatm is imperative to keep the?
ASTM D1275 – 15
If the oil visibly darkens during testing then most likely oxygen has entered the vessel and oxidized the oil. In these cases, the test procedure has become compromised and must be repeated. Preparation of Apparatus 7.
Rinse with tap water, then with distilled water, and dry in an oven. Note 2 and remove blemishes from surfaces with the grit silicon carbide paper. Strips may be stored in sulfur-free acetone at this point for future use. Wipe the strip with fresh pads of cotton and subsequently handle only with stainless steel forceps do not touch with the? Rub in the direction of the long axis of the strip.
Clean all metal dust and abrasive from the strip, using successive clean cotton pads until a fresh pad remains unsoiled. Do not use compressed air or an inert gas to dry the copper strip. NOTE 2—It has been found convenient to polish a larger piece of copper from which, after the?
Place the bent copper strip standing on its long edge so that no? Bubble nitrogen through the oil in the bottle by means of a 1?
Quickly screw in the PFTE plug equipped with? If a specimen is borderline or unclear, take a clean laboratory tissue and drag it across the surface with heavy pressure; if any of the deposited material is removed, the deposit is corrosive and is to be reported as such. Interpretation of Results A description of the tarnish levels is provided in Table 2 for reference only. Lubricate the ground-glass stopper with a small amount of the test specimen.
Bubble nitrogen through the oil in the? When the oil in the? Polished Strip 1 Slight tarnish Description Unable to reproduce upon aging so no description is provided d12275. Light orange, almost the same as freshly polished strip b.
Multicolored with lavender blue or silver, or both, overlaid on claret red d. Brassy or gold a. Magenta overcast on brassy strip b.
Multicolored x1275 red and green showing peacockbut no gray a. Transparent black, dark gray or brown with peacock green barely showing b. Graphite or lusterless black c. Glossy or jet black Precision and Bias ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. This standard is subject to revision at any c1275 by the responsible technical committee and must be reviewed every?
ASTM D – 15 Standard Test Method for Corrosive Sulfur in Electrical Insulating Liquids
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Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
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