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3 phase charging

MSLR

Member
Oct 19, 2019
12
7
uk
Hi Guys i have brought the tesla wall connector charger. I have 3 phase electric at my unit and will install the charger here does anyone know the difference in charge times between single and 3 phase? Also are there any other benefits for using 3 phase or negatives?
Thanks apologies in advance if its a stupid question ha!
 
That depends on what's in your car and the clue to that is how many fat pins are there in your car's charging connector. If there are 3 then you will be drawing from all three phases and the advantage to be had there is less ripple but with modern power supply technology I don't think there it makes much difference.

If your power connector only has two heavy pins then you are only connecting across 1 phase and are not achieving any of the benefits of 3 phase.

The benefits of three phase are mostly in distribution (saves copper for the same amount of power delivered) and in motors (naturally rotating magnetic field) and, as mentioned above, much reduced ripple in bridge rectifiers.
 
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MSLR

Member
Oct 19, 2019
12
7
uk
That depends on what's in your car and the clue to that is how many fat pins are there in your car's charging connector. If there are 3 then you will be drawing from all three phases and the advantage to be had there is less ripple but with modern power supply technology I don't think there it makes much difference.

If your power connector only has two heavy pins then you are only connecting across 1 phase and are not achieving any of the benefits of 3 phase.

The benefits of three phase are mostly in distribution (saves copper for the same amount of power delivered) and in motors (naturally rotating magnetic field) and, as mentioned above, much reduced ripple in bridge rectifiers.
many thanks for the reply and information :)
 

Rocky_H

Well-Known Member
Feb 19, 2015
8,614
11,198
Boise, ID
I have 3 phase electric at my unit and will install the charger here does anyone know the difference in charge times between single and 3 phase?
It really is literally three times the power, and charging speed correlates with power, so it's going to be about three times the charging speed for 16A three phase versus 16A single phase.
 
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It really depends on what is in the car. If there are 3 charging modules of X watts each and if each is connected to a phase then you will get 3*X watts. But that requires, as I noted in my first post, 3 phase conductors coming into the car. My understanding is that the connectors on continental vehicles have that but I don't know about ones sold in the UK.
 

Rocky_H

Well-Known Member
Feb 19, 2015
8,614
11,198
Boise, ID
It really depends on what is in the car. If there are 3 charging modules of X watts each and if each is connected to a phase then you will get 3*X watts. But that requires, as I noted in my first post, 3 phase conductors coming into the car. My understanding is that the connectors on continental vehicles have that but I don't know about ones sold in the UK.
Yes, the UK vehicles also have the Type 2 Mennekes charging ports that take incoming 3 phase connections and also do have the 3 phase enabled onboard chargers just like the rest of Europe.
 

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