Guidance on clearances and creepage distances in particular for distances equal to or less than 2 mm. Test results of research on influencing parameters
关于间隙和爬电距离的指南 尤其是对于等于或小于2 mm的距离 影响参数研究的试验结果
BS PD IEC/TR 63040:2016 describes test results of research on dimensioning of clearances and creepage
distances, for spacing equal to or less than 2 mm for printed wiring material and other
equivalent arrangements of insulation, where the clearance and the creepage distance follows
the same path along the surface of solid insulation.The information contained in this document is the result of research only and cannot be used
for dimensioning the clearances and creepage distances for equipment within low-voltage
systems, where IEC 60664-1 applies. However distances can be taken into account for
functional reasons.This document provides results of research related to the following criteria:clearances independent from the micro-environment;creepage distances for pollution degree 1, 2 and 3 which extends the use of smaller
distances to products having design features similar to printed circuit boards;creepage distances to avoid flashover of the insulating surface;information on minimum creepage distances to maintain minimum insulation resistance.A test method for the evaluation of the relevant water adsorption group for the surface of any
insulating material which has not yet been classified is described.Cross References:IEC 60664-1:2007IEC 60050-212:2010IEC 60112IEC 60364-5-51IEC 60529IEC 60664-5:2007IEC 60721-3-3IEC 60721-3-7IEC 60721-3-9All current amendments available at time of purchase are included with the purchase of this document.