| Title |
Development of household socket-outlets(250V/20A) by improving material and structure of socket-contacts |
| Authors |
Ju-Chul Kim; Sang-Joong Lee |
| DOI |
https://dx.doi.org/10.5207/JIEIE.2019.33.7.027 |
| Keywords |
Socket-Outlets; Contact Resistance; Socket-Contacts; Withdrawal Force |
| Abstract |
Though electric appliances are diversified and power consumption increases year after year, it is difficult to cope with IEC 60884-1 standard for 16A socket-outlets, which results in overload. When the withdrawal force is lost due to fatigue accumulation or external shock which results from long-time use, an electric fire can occur due to increase of contact resistance between the socket-contacts and the plug. In case of the circuit breaker provided on primary side of the socket-outlet, when not 16A but 20A is used as a branch current, it can be a fatal reason that causes an imperfection in the socket due to overload. In this paper, we have developed a 20A socket-outlet for home use that can secure sufficient surface area and enhanced electric safety of the socket-contacts. A prototype socket-outlet with 20A of rated current has been developed to increase the conductivity and to maintain the withdrawal force even for long-term use, by changing the structure and material of the contact. |