標準號：BS EN 62535-2009
中文標準名稱：絕緣液.檢測用過和未用過的絕緣油中的潛在腐蝕性硫的試驗方法
英文標準名稱：Insulating liquids - Test method for detection of potentially corrosive sulphur in used and unused insulating oil
標準類型：K15
發布日期：2009/3/31 12:00:00
實施日期：2009/3/31 12:00:00
中國標準分類號：K15
國際標準分類號：29.040.10
引用標準：IEC 60475;IEC 60554-3-1;ASTM D1275;ASTM D130;DIN 51353;EN 13601
適用范圍：This International Standard specifies a test method for detection of potentially corrosivesulphur in used and unused mineral insulating oil.Most recent failures due to corrosive sulphur are related to the formation of copper sulphidedeposits in and on the surface of winding cellulosic paper.The test method uses a copper conductor, wrapped with one layer of paper, immersed in theoil and heated to evaluate the capability of the oil to yield copper sulphide and transfer it topaper layers.The growth of copper sulphide on bare copper may cause the presence of conductiveparticulates in the oil, which can act as nuclei for electrical discharge and may lead to a fault.Other test methods exist using a bare copper strip immersed in oil and heated to detect thecorrosive behaviour of oil against copper. ASTM D1275 Method B is also used for this testand a modified procedure using low oil volumes is included in Annex A.Tests with and without paper are considered as complementary and may lead to differentresults.