Good folk of the PSTC. Some LVD stuff.. I have recently been looking at High Voltage connectors, round the 15-20kV operating mark, for use on laboratory equipment, e.g. electron microscopes etc.
I've been offered a 15kV connector that has a 30mm distance from the contact to the nearest point at which a test finger can get, (PTFE Tube). This seems to meet with the requirements of IEC1010-1 Figure D.2. clearance distance, but not with the requirements of table D.18, Creepage distance. (15kV= approx 60mm). The implication of this is that just about all the HV connectors on the market are only good for 10kV or so, even the ones quoting 30kV! Questions are: 1. Am I right in expecting HV connectors to meet IEC1010-1? Particularly the clearance and creepage tables D.18 and Fig D.2. 2. Do 25kV connectors really have to have 100mm surface distance to ensure safe use? (table D.18) This would make a 25kV connector 8" long! 3. Are there any more appropriate standards to use in this respect? TIA... Chris Dupres EMC Specialist. VG Microtech. cdup...@vacgen.fisons.co.uk tel +44 (0) 1825 761077 fax +44 (0) 1825 768343 'Opinions expressed are personal, not necessarily Corporate'
