Extensive record-keeping was made into log-books and generally the equipment used was an insulation resistance tester, simple hand tools and visual inspection.
12.
This " reloaded " voltage can be retained for months, even in electrolytic capacitors, caused by the high insulation resistance in common modern capacitor dielectrics.
13.
The dissipation factor and insulation resistance of film capacitors may also be changed by the above-described external factors, particularly by moisture absorption in high humidity climates.
14.
The method assumes a single fault exists, of low resistance compared with the undamaged cable insulation resistance, and that the cable conductors have uniform resistance per unit length.
15.
Although electrolytics leakage current is higher than current flow over insulation resistance in ceramic or film capacitors, the self-discharge of modern non solid electrolytic capacitors takes several weeks.
16.
Because capacitors pass AC signals but block DC, film capacitors with their high insulation resistance and low self-inductance are well-suited as signal coupling capacitors for higher frequencies.
17.
Class 1 ceramic capacitors have an insulation resistance of at least 10 G?, while class 2 capacitors have at least 4 G? or a self-discharge constant of at least 100 s.
18.
The insulation resistance given in the unit M? ( 10 6 Ohm ) as well as the self-discharge constant in seconds is an important parameter for the quality of the dielectric insulation.
19.
J-STD-004 includes tests for electromigration and surface insulation resistance ( which must be greater than 100 M? after 168 hours at elevated temperature and humidity with a DC bias applied ).
20.
Multifunction testers are able to perform continuity tests ( or low ohms resistance tests ) and insulation resistance tests ( or high ohms resistance tests ) and they may also be able to perform RCD tests.
