ASTM D [ Withdrawn ]. Standard Practice for Sampling Insulating Liquids for Gas Analysis and Determination of Water Content. For complete instructions on sampling electrical insulating fluids for GAS ANALYSIS and determination of water content refer to ASTM D Adjust flow. electric equipment, are detailed in the Doble Reference Book on Insulating Liquids and Gases , ASTM Practices. D  and D . GOOD SAMPLE.
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Wipethe inside of the valve and threads with a clean lint-free cloth. Separate the syringe from the tubing and inspect forair bubbles. Remove the sample adapter if used, andreinstall the security plug with a non-hardening thread sealant. Drain at least 1. However, gas-saturated samples will begin to release gases bubbles soon after sampling.
If air is present, discharge oil with the syringevertical stopcock up and obtain another sample.
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When thedrying period has expired, syringe pistons shall be placed intheir barrels, valves closed; stainless steel cylinder valvesshould be closed; or cans sealed with their screw cap. A large variancefrom normal should be considered when evaluating the testresults obtained when the syringe conditioning was not used. Power by seonoco All Rights Reserved: We are nonprofit website to share and download documents.
Cleaning thetubing should be considered impractical. This should involve a volumeof air equivalent to at least 55 changes of the cylinder volumeduring the 15 min period of drying. With all three valves openand the cylinder held in a vertical position see Asmt. Perform this condition procedure onemore time.
Care shall be taken not tocontaminate the syringe inlet port. Syringe Valve Piston Gases Materials. If any sound is heard,the cylinder should be drained and the sampling repeated. Remove the security pipe plug fromthe drain valve. If the slug moves towards the electrical apparatus, a negative pressure exists.
Chalmers The D3163 of Content. If the slug moves away from theelectrical apparatus, a positive pressure exists. Originallypublished as D — Cleaning of Apparatus 5. Immediately close the port into the syringe Fig. Extreme care should be used in performing this procedure. Wipe the inside of the valve and threads with a clean lint-free cloth.
Preparation for Sampling 6. Position the handle toward the syringe. Samples should be forwardedto the laboratory as quickly as possible. Samples can beobtained safely. One of twoprocedures may then be used to prepare 3d613 sample outlet.
Sampling should be discontinued. Ethics for managements consultans. The tubing should not be reused.
Transformer Oil Gas Analyser (TOGA)
Remove the security pipe plug from the drain valve. Do not release any evolvedgases bubbles since these gases must be included in thedissolved gas analysis. If the slug moves away from the electrical apparatus, a positive pressure exists.
Attach the plastic tube tothe syringe as shown in Fig. If you have any questions about copyright issues, please report us to resolve them. Connectthe oil-resistant tubing to the lower valve port on the steelcylinder and connect a short piece approximately 60 cm 24in.
To the running of this website, we need your help to support us. Install the drain valve security plug. A number in parentheses indicates the year of last reapproval. Packaging and Shipping Test Astmm D, Table 1, provides coefficients of variation for different gas-in-oil analysis from samples collected in the three containers recommended in this practice.
However, gas-saturated samples will begin to release gases bubbles soon after sampling. Last previous edition D — All materials on our website are shared by users. Take extreme caution when samples are drawn from electrical apparatus having a small volume of insulating fluid.
Open the lower valve on the steel cylinder. Samples can be obtained safely. Package the filled syringe as soon as possible to protect the sample from light. Wstm you for visiting our website and your interest in our free products and services.
Drain at least 1. While observing the slug of insulating fluid, slowly crack the sample outlet valve open.