![]() ![]() The value quoted in the data sheets is an average value from investigations of a sufficiently The relative failure rate is the ratio of the number of failed to the total number ofĬomponents and applies to the load duration indicated. testing and checking time at the userĪnd is identified by the 5th code letter (see table). MKC1) capacitors comprising polycarbonate (trade name Makrofol®) as dielectric andįor cube-shaped types with parallel leads, the termination tests Ub and Uc are not applicable. Mylar®, etc.) as dielectric and vacuum-deposited metal layers. MKT1) capacitors comprising polyethyleneterephthalate (trade name e.g. Metallized plastic - MK - capacitors are distinguished by their dielectric materials:Ĭomprising lacquer films (cellulose acetate) as dielectric and vacuumĭeposited metal layers. Yvhere electrochemical action takes presidence. The self-healing characteristic is independent of maintaining the specified limit conditions, and can even be effective at low voltage ratings The capacitance variation would therefore be less 0.18 self-healing processesĪre to be expected per year and per f.lF. Parameters of continuous maximum voltage and maximum limittemperature apply statistical measurements with MKL capacitors reveal that approx. The capacitor design ensures that self-healing processes occur only occasionally, even when the Since only fractions of the energy stored in the capacitor are dissipated in the self-healing process, the potential drop remains accordingly low. ![]() The time necessary for the self-healing process is less than 10 f.lsec. This results inĮffectively isolating the region of the failure. Metallization in the area of the breakdown without impairing the dielectric. ![]() The electric arc, which occurs with voltage breakdown of the dielectric, evaporates the Well as with the standard sheets for the individual capacitor types. MK capacitors comply with VDE specification 0560, part 1, and DIN standard 44110 as This ensures low loss and low inductance characteristics of the finished The metallized films areĮither of wound construction in tubular or flattened form or arranged in the more recentĪ hot metal spray technique is used for making electrical contact to the edges of the metallized winding. Layers of approximately 0.02 to 0.05 f.lm are vacuum-deposited. The dielectric of these capacitors consists of plastic films onto which metal Metallized plastic capacitors - briefly MK capacitors - are outstanding for their self-healing property. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |