Suggestion
jbakuwel opened this issue · comments
Replace contactor with something like https://www.digikey.com/product-detail/en/sensata-crydom/D24125/CC1143-ND/254192
Zero-cross might also be nicer for the car charger....?
Solid State Relays are not a good fit for EVSEs for 3 main reasons. The
main purpose of the EVSE is isolation until all safety checks pass. SSRs
can not guarantee isolation and there is a chance of shock even when
commanded off. Additionally EVSEs must fail safe. SSRs tend to fail closed
shorted where the mechanical properties of a relay tend to fail safe.
Additionally, SSRs have a pretty high internal resistance, at a high
sustained current this can translate into hundreds of watts of waste heat,
far too much to deal with in a small enclosure.
…On Fri, Jun 14, 2019, 8:37 PM jbakuwel ***@***.***> wrote:
Replace contactor with something like
https://www.digikey.com/product-detail/en/sensata-crydom/D24125/CC1143-ND/254192
Zero-cross might also be nicer for the car charger....?
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