Hey guys, I just picked up a new 2015 a couple weeks ago. Have loved it and it's been great so far. Today, I got a new Clipper Creek HSC40 EVSE installed. I plugged it in when I got home to test the new unit. Everything appeared fine. Starting with two bars left, it seemed to be charging super fast (est 4.5 hours) at least compared to the stock L1 I've been using.
So I went out to the garage to check the battery temp to see how hard it was pushing the batts at 6.6kw but was caught a little offguard to hear a pretty loud high pitched hum from under the hood. So I to trace it down, I got out my stethoscope and started checking things. I found the coolant pump and it had a nice quiet purr of a diaphragm pump as expected. No fans running so nothing to check there. Finally, I worked my way over to the power stack and the sound through the stethoscope was slightly louder on bottom motor component, somewhat louder on the inverter sandwich, and loudest from the charger case. it was also hot enough that you couldn’t comfortably hold your hand on it. Laser thermometer said the top of the charger cover was 117.5*. Even this doesn't surprise me since these run about 85% efficient, the other ~1000 watts are going up like a 1kw space heater.
So it's the charger component, not the evse, or the charge cooling system that is making the high frequency (much higher than 60hz). It's also getting hot. Real question is that amount of heat normal? And is the high pitched hum normal as well?
Thanks all!
Bryan
So I went out to the garage to check the battery temp to see how hard it was pushing the batts at 6.6kw but was caught a little offguard to hear a pretty loud high pitched hum from under the hood. So I to trace it down, I got out my stethoscope and started checking things. I found the coolant pump and it had a nice quiet purr of a diaphragm pump as expected. No fans running so nothing to check there. Finally, I worked my way over to the power stack and the sound through the stethoscope was slightly louder on bottom motor component, somewhat louder on the inverter sandwich, and loudest from the charger case. it was also hot enough that you couldn’t comfortably hold your hand on it. Laser thermometer said the top of the charger cover was 117.5*. Even this doesn't surprise me since these run about 85% efficient, the other ~1000 watts are going up like a 1kw space heater.
So it's the charger component, not the evse, or the charge cooling system that is making the high frequency (much higher than 60hz). It's also getting hot. Real question is that amount of heat normal? And is the high pitched hum normal as well?
Thanks all!
Bryan