The document includes a number of tests which use different conditioning procedures appropriate for different applications. Test Q may be subdivided in the following two sub-groups, distinguished by their detection methods, viz: internal detection, which measures changes of electrical characteristics produced by the test medium (liquid or gas) introduced into the specimens through the leak; external detection, where by the escape of the test medium through the leak is observed.
Số hiệu tiêu chuẩn
DIN EN 60068-2-17
Tên tiêu chuẩn
Environmental testing - Part 2: Tests - Test Q: Sealing (IEC 60068-2-17:1994); German version EN 60068-2-17:1994
Ngày phát hành
1995-05-00
Từ khóa
Bushes (mechanical components) * Case tightness * Definitions * Degrees of protection * Detector gases * Electric appliances * Electrical engineering * Electrical equipment * Electricity * Environmental testing * Gas leanage * Immersion * Impermeability * Liquids * Materials testing * Mechanical testing * Pressure overload * Pressure rise * Pressure vessels * Sealing * Sealing rings * Shafts * Test gases * Testing * Tightness * Freedom from holes * Density