Hello Kirk, small power applications such as dimmers must switch on the Triac at any time of the AC cycle. This produced a high current surge if it is near the peak of the sine and thus a lot of EM noise on the cables. High power appliances such as furnaces etc. turn on at the zero crossing monet thus producing less noise; they use packet control instead for power regulation. Energy suppliers mostly insist of zero crossing relays for high power devices above about 2 kW. This is why there are two different sorts of SSR. Best regards Peter Blodow
At 03:32 13.04.2009, you wrote: >For this relay: > >http://document.sharpsma.com/files/s108t01_e.pdf > >what does "Non-zero crossing functionary" mean? > >-- >Kirk Wallace >http://www.wallacecompany.com/machine_shop/ >http://www.wallacecompany.com/E45/index.html >California, USA > > >------------------------------------------------------------------------------ >This SF.net email is sponsored by: >High Quality Requirements in a Collaborative Environment. >Download a free trial of Rational Requirements Composer Now! >http://p.sf.net/sfu/www-ibm-com >_______________________________________________ >Emc-users mailing list >[email protected] >https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ This SF.net email is sponsored by: High Quality Requirements in a Collaborative Environment. Download a free trial of Rational Requirements Composer Now! http://p.sf.net/sfu/www-ibm-com _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
