Hello All,
I am currently constructing an electric HLT using 240 and a heating elelment. I have a programed microcontroller that will be switching the heating element. However, I keep going back on forth on which method I like the best; SSRs or DPST relay/contactor.
SSR: The microcontroller would directly trigger 2 40A SSR (one for each of the 240 loads). I like the simplicity and responce time of doing this. I dont, however like the bleed current. Im not thrilled about the amount of heat Ill have to dissapate too. Has anyone wired their element using solely SSRs? Any thought on these concerns? Has anyone experienced an issue with the bleed current burning the element when the liquid has been transfered out?
DPST Relay or Contactor: I like that this is a mechanical swith that will cut all power when off. However, I will still have to have a secondary relay or SSR to power the coil since my microcontroller is only 5V. It seem this method has more elements, but is a bit safer. Has anyone had issues with the coil burning our durring long duration activations?
So I guess the qustion is: Solely SSRs, or Relay/Contactor?
Thank you in advance!!
I am currently constructing an electric HLT using 240 and a heating elelment. I have a programed microcontroller that will be switching the heating element. However, I keep going back on forth on which method I like the best; SSRs or DPST relay/contactor.
SSR: The microcontroller would directly trigger 2 40A SSR (one for each of the 240 loads). I like the simplicity and responce time of doing this. I dont, however like the bleed current. Im not thrilled about the amount of heat Ill have to dissapate too. Has anyone wired their element using solely SSRs? Any thought on these concerns? Has anyone experienced an issue with the bleed current burning the element when the liquid has been transfered out?
DPST Relay or Contactor: I like that this is a mechanical swith that will cut all power when off. However, I will still have to have a secondary relay or SSR to power the coil since my microcontroller is only 5V. It seem this method has more elements, but is a bit safer. Has anyone had issues with the coil burning our durring long duration activations?
So I guess the qustion is: Solely SSRs, or Relay/Contactor?
Thank you in advance!!