Real World HPWC Charging Curve

[Pmacafee]

I have to install multiple HPWCs at a single location and not sure about the total load that will be created. Can someone tell me what their experience is with the charging curve on a HPWC? There are some very informative posts about what the the Model S draw down is on a Supercharger over an hour or so but can't find any postings about the HPWC, probably becuase they are just getting distributed.

Philip Macafee

 

[bluetinc]

Hey Philip,

I don't have an HPWC, but I have my own box that provides the same 80A to the S. During standard charging I see the car draw the full 80A after a ramp-up of 15 seconds or so. This then continues until the car finishes the standard charge (up to ~4 hours later), with a very quick ramp down. For a range charge you will see some ramp down over the last few miles you hear about on the superchargers but by this point you have had up to 5 hours at full load and the ramp down time is in the 10-20 min range. All in all, if you are planning multiple HPWCs, you need to be able to support the full load that they will draw.

Peter

Edit: Almost all my notes of this are when charging in the cold (Sub 32 degrees), and there isn't a clear way for me to tell which part of the charge is going to charging vs. heat.

 

[mitch672]

bluetinc, are you the person who made the RV camp setup that uses (2) 14-50s? If so, we are curious to see a schematic (possibly) of how you wired it up, including all of the contactors etc needed for phase matching etc.

 

[rolosrevenge]

Yes, there is a decrease over time but it only begins after the battery is 70% full or more. You'll need to plan for the full load of all of them.

 

[AMPd]

Is this at a business location?
I was hoping PMACAFE was a cafe in San Francisco

 

[Pmacafee]

Is this at a business location?
I was hoping PMACAFE was a cafe in San Francisco

No, I get my coffee at Peets, I have a corporate sedan service (business class limousine) and will get my first Model S next week and have 10 more reserved if that first one goes well.

 

[Bradleybang]

No, I get my coffee at Peets, I have a corporate sedan service (business class limousine) and will get my first Model S next week and have 10 more reserved if that first one goes well.

Hey, I just recognized you are from "Quicksilver". I am a frequent customer. A big congrats on the Model S order. I would love to get my rides in an S!