Jump to content

How to test a 3-phase socket?


Maestro

Recommended Posts

I have the 3-phase socket and the voltage tester shown below but I don't not know how to test the voltage on the socket, ie into which holes to put the black and read test prongs. I hoped to find guidance on the web, but no luck.

 

3-phase socket.png  

 

Tester.png

 

Link to comment
Share on other sites

The diagram linked to by @treetopsshould be the starting point.

 

One probe in 4 (should be earth) other in each of the other big terminals. Terminal that reads about OV is neutral, the others will be the phases reading about 220V.

 

If it has a car charging box on the other end it may not actually have power until it's plugged into an EV.

Link to comment
Share on other sites

Thank you both.

 

On 4/17/2021 at 12:48 AM, Crossy said:

If it has a car charging box on the other end it may not actually have power until it's plugged into an EV.

 

 

This solves the puzzle of why I get no reading, respectively only a few mV.

 

My problem is that my EV, a Tesla Model 3, could no longer be charged from the charging box after a recent software upgrade on the car although the wall box does have current (the control lamp lights up) and I have tried to figure out whether the socket on the wall box cable or the car's charge port is at fault. Various attempts by the Tesla service technicians to get it sorted out failed and thus I began to experiment on my own and found that after a hard reset, ie disconnecting and reconnecting the 12 V starter battery, charging from the wall box works again (the control lamp on the box blinks) but only for one charge cycle. Repeating the hard reset gives the same result every time. 

 

Charging the car with a cable from a wall socket that is wired directly to the main electrical panel, the fuse box, works correctly every time. 

 

One more observation: another Tesla car can be charged from my wall box repeatedly without any problem.

 

Oh well, it's back to the service centre, then. 

  • Like 1
Link to comment
Share on other sites

  • 2 weeks later...

Do you hear the clicking sound of the adapter locking in on the car?  What color is the logo at the charge port?  Does removing and repositioning the connector impact anything?

 

Do you have a solid ground for the system?

 

You are likely to have better luck on Tesla Motors Club forums than here though.

  • Like 1
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    • No registered users viewing this page.



×
×
  • Create New...