EEVblog 1437 - Zappi 7kW Electric Car Charger TEARDOWN + EXPERIMENT - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: November 12, 2021, 09:56:11 pm
content: How does an Electric Car charger work?A teardown of the Myenergi Zappi 7kW EVSE and experiments demonstrating how the car detection system and charge mode works.00:00 - Zappi 7kW Single Phase EVSE Charger02:46 - Type 2 Charging Standards08:30 - Teardown17:32 - Power Up20:56 - Experiments!

author: EEVblog
author_rank: Unknown
timestamp: November 14, 2021, 02:45:23 am
content: Installation & Testing:

author: f4eru
author_rank: Super Contributor
timestamp: November 14, 2021, 06:42:49 pm
content: That's not a charger.Just kids having fun.That's a charger :

author: f4eru
author_rank: Super Contributor
timestamp: November 14, 2021, 06:48:51 pm
content: This PE switching stuff is controversial.But it is used for PEN protection, more or less specific to UK because of the TN-C-S earthing.What is the earthing style in Ozzie ?

author: grythumn
author_rank: Contributor
timestamp: November 14, 2021, 10:03:50 pm
content: Quote from: EEVblog on November 14, 2021, 02:45:23 amLooks like you replaced the video and need to update the link? Possibly to

author: EEVblog
author_rank: Unknown
timestamp: November 15, 2021, 04:55:46 am
content: Quote from: grythumn on November 14, 2021, 10:03:50 pmDone. I added the graph thing and reuploaded.

author: EEVblog
author_rank: Unknown
timestamp: November 15, 2021, 04:56:28 am
content: Quote from: f4eru on November 14, 2021, 06:48:51 pmIt's MEN here, Multiple Earth Neutral.

author: EEVblog
author_rank: Unknown
timestamp: November 27, 2021, 01:21:36 am
content: MyEnergi saw my video and are sending me a hub so I can update my firmware.

author: conelec
author_rank: Contributor
timestamp: December 01, 2021, 02:29:37 pm
content: Now this is a charger, 50KW Three phase by Tritium

author: Ed.Kloonk
author_rank: Super Contributor
timestamp: December 02, 2021, 10:35:39 pm
content: Hey. I need suggestions for a good power logger. Needs to be three phase. Possibly one extra channel for the OP hot water. Needs to log to memory card or less preferable a local network. I do not want anything that sends to the cloud.Target premises (Western Sydney, Australia) has smart meters but the supplier has removed the ability to download the usage CSV file. Bastards.

author: NiHaoMike
author_rank: Super Contributor
timestamp: December 03, 2021, 01:26:47 am
content: Quote from: Ed.Kloonk on December 02, 2021, 10:35:39 pmThere are plenty of DIN rail power meters that do not require the cloud. In fact, many of them don't even have the capability to upload to the cloud without additional hardware.

author: EEVblog
author_rank: Unknown
timestamp: December 05, 2021, 04:32:54 am
content: Quote from: Ed.Kloonk on December 02, 2021, 10:35:39 pmI'm surprised you even had that ability!How did it do that? Was it wifi or wired network connected or something?

author: Ed.Kloonk
author_rank: Super Contributor
timestamp: December 05, 2021, 05:59:12 am
content: Quote from: EEVblog on December 05, 2021, 04:32:54 amOnline account website. Origin. The CSV file was, up until recently, freely available when you log in to your account. Edit: The fuse box has a little cone shaped transmitter mounted to the outside.If I may be permitted a rant. Some of you on the Eastern Seaboard may find this interesting.Some time back, they wanted to change the meters from the old wheel ones to the smartmunts. I went along with it cos it was free and also made changing provider much easier. Or so I thought.The CSV file consisted of all the manual meter reads every ~90 days going back years up until the installation of the replacement meters. From then on, the data consists of a reading taken every 30 mins and then all that daily information is sent, I understand, at midnight to a company called Acumen.My grievance is that it was all working fine until about 6 months ago we get a message that there will be an upgrade to the facilities on the website. What we have had since is terrible. First thing to go missing was the link to download the CSV.Then they came for the usage graphs. Now it's impossible to infer what the general rate usage is versus the control load (off peak heater). All KWhs are just one value, every half an hour. The previous day data now shows up after 2am. Did the hot water tank run for one hour or ten? I don't know. (Yes, I know I could go and read the meters.)Why this matters. The power companies are trying very hard to shoehorn in TOU (time of use) rates instead of basic rates. It prolly won't affect our usage, but I cannot, in any serious way, compare our usage against any available plans one of which I will need to select soon.The law says that the wholesaler (endeavour) must provide your usage info when asked. They did within 24 hrs. I got a PDF showing month to month readings. And some jagged looking graphs. Which is helpful but not really as useful as I hoped.Of course, they said, use the App. I fired the App for the first time yesterday. Turns out the app is just a lame arse browser that displays a mobile version of the desktop website.I think that they have wrecked the website intentionally. The technology is there for the consumer/customer to see plenty of info with much granularity but they have instead set about to hide it.The fact is since the installation of the smart meters, which I got told we had to have, they now have much more information about our power usage and I have less. It is no accident.

author: Ed.Kloonk
author_rank: Super Contributor
timestamp: May 29, 2022, 09:33:29 am
content: Digging up the sloppy metering issue again here instead of starting new thread. Hopefully you aren't too annoyed.Do you / would you use CSV power consumption data if it were available to you?I'm trying to gauge whether or not it's worth arguing this point with the power companies as my contract is about to run out. Is it a dumb hill to die on?I'm cranky about the inevitable price increase (that's life) but I amreally rawabout not being able to have the CSV data any more and have had to wear their crappy, useless phone app.If you are shopping around for a deal, is price now simply the deciding factor or do you want bells and whistles?

author: EEVblog
author_rank: Unknown
timestamp: May 30, 2022, 01:17:57 am
content: Quote from: Ed.Kloonk on May 29, 2022, 09:33:29 amProbably once in a blue moon.The point of having it available is more important.If the utility is monitoring you with a smart meter and charging you accordingly then you shuld have a right to access the data.