Recent advances in the design, manufacturing and testing of static condensers in power sizes

The static condenser is particularly desirable as a power factor corrective device since it requires no attention. To fully capitalize this advantage static condensers must be reliable. The reliability of insulation subjected to a constant potential stress, depends on the ratio between the working stress and the disruptive stress. This ratio has been kept large in all electrical apparatus and years of successful use have followed. Static condensers are described, which have been designed with insulation factors of safely such as have proved dependable in other apparatus for years. These ratios have been maintained and the product still kept on a reasonable commercial basis by increased economy in construction and use of material and by accurate check of insulation quality in every unit.