DOWNLOAD IEC 62535

This first catagory involves the optical properties of the films alone. Most recent failures due to corrosive sulphur are related to the formation of copper sulphide deposits in and on the surface of winding cellulosic paper. The temperature was increased by fifty degrees to Celsius. For undated references, the latest edition of the referenced document including any amendments applies. The test method uses a copper conductor, wrapped with one layer of paper, immersed in the oil and heated to evaluate the capability of the oil to yield copper sulphide and transfer it to paper layers. Contact with us now Your mail: Our prices are in Swiss francs CHF.

iec 62535

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We accept all major credit cards American Express, Mastercard and VisaPayPal and bank transfers as form of payment. Specifications for individual materials – Sheet 1: Power by seonoco All Rights Reserved: TC 10 – Fluids for electrotechnical applications rss.

NOTE Some of these compounds may be initially corrosive, or become corrosive under certain operating conditions. Microlab NW Photomicrograph Gallery. Copper rod, bar and wire for general electrical purposes 3 Terms and definitions For the purposes of this document, the following 625335 and definitions apply.

For undated references, the latest edition of the referenced document including any amendments applies.

iec 62535

Our prices are in Swiss francs CHF. This first catagory involves the optical properties of the films alone. The following test report forms are related: Other test methods exist using a bare copper strip immersed in oil and heated to detect the corrosive behaviour of oil against copper.

Tests with and without paper are considered as complementary and may lead to different results.

Other test methods exist using a bare copper strip immersed in oil and heated to detect the corrosive behaviour of oil against copper. Contact with us now Your mail: Films on Copper By way of introduction, both of these test methods monitor for growth of a film on copper when it is exposed to an oil at elevated temperature over an extended period of time.

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Click here for more information about 65235 origin of the colors of thin films on copper. Do you need a multi-user copy? Click here for more information about the 6253 of thin films on copper.

IEC 62535 Detection of potentially corrosive sulphur in used and unused insulating oil

In the two catagories that follow we will consider films created by each of these test methods with different oils. Tests 65235 and without paper are considered as complementary and may lead to different results. The growth of copper sulphide on bare copper may cause the presence of conductive particulates in the 65235, which can act as nuclei for electrical discharge and may lead to a fault. The temperature was increased by ten degrees to Celsius.

The time was increased from 19 hours to 48 hours. This was based on the temperature and time required to make oils that passed the original test fail on the assumption that these oils caused “corrosive sulfur” failures in transformers. The temperature was increased by fifty degrees to Celsius.

Most recent failures due to corrosive sulphur are related to the formation of copper sulphide deposits in and on the surface of winding cellulosic paper.

IEC Insulating liquids – Test method for detection of potentially corrosiv – YONGRUN

Preview Abstract IEC For dated references, only the edition cited applies. Standard test method for corrosive sulfur in electrical insulating oils ASTM D, Standard test method for corrosiveness to copper from petroleum products by copper strip test DINTesting of insulating oils; detection of corrosive sulfur; silver strip test ENCopper and copper alloys.

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The temperature and the time of exposure has changed over the years and the conditions of the test are slightly different for these two methods, as described below. Most recent failures due to corrosive sulphur are related to the formation of copper sulphide deposits in and on the surface of winding cellulosic paper. The growth of copper sulphide on bare copper may cause the presence of conductive particulates in the oil, which can act as nuclei for electrical discharge and may lead to a fault.

The test method uses a copper conductor, wrapped with one layer of paper, immersed in the oil and heated to evaluate the capability of the oil to yield copper sulphide and transfer it to paper layers.

iec 62535

The test method uses a copper conductor, wrapped with one layer of paper, immersed in the oil and heated to evaluate the capability of the oil to yield copper sulphide and transfer it to paper layers.

The time was increased from 18 hours to 72 hours and a layer of paper was added because it created more reliable results. By way of introduction, both of these test methods monitor for growth of a film on copper when it is exposed to an oil at elevated temperature over an extended period of time.

iec 62535