![SiC Heating Elements :: Applications](../skins/default/images/HDR-sic-application.jpg)
![](../images/SUB-HDR-sic-application-suggestion.jpg)
Determination of electric capacity for box type furnace:
Allowing for heat loss through furnace walls, the electric capacity can be approximated from the following formula and diagram.
![0](../images/Erema_application_graph1.gif)
![0](../images/Erema_application_textblock1.gif)
Temperature raising time and thermal capacity of processed material are not included in this formula.
![0](../images/Erema_application_graph2.gif)
![0](../images/Erema_application_textblock2.gif)
![](../images/SUB-HDR-sic-connection.jpg)
Series and parallel connections are generally used with EREMA elements. The maximum number of EREMA elements in series must limited to 2, or two-step serial connection must be used. If furnace chamber temperature exceeds 1350°C parallel connection must be used. Open delta connection (single-phase 3 circuits / 6 wire delta) is recommended for three-phase connection.
- Single-phase parallel connection(Figure11)
- Single-phase two series and parallel connections(Figure12)
- Open delta connection(Figure13)
![0](../images/Erema_application_diagram1-3.gif)
![](../images/SUB-HDR-sic-volatage-calculation.jpg)
![](../images/Erema_application_diagram4.gif)