EVSE / Granny cable EVR01

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This topic contains 10 replies, has 5 voices, and was last updated by  markd 13 years, 4 months ago.

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  • #3711

    Nosig
    Participant

    I’m going to share some details here that can also be found scattered around the French Zoe forum, plus some extra info I got while communicating with Davide from ELPA in Italy. He has developed an EVSE (Electric Vehicle Supply Equipment) or so called “Granny cable” for the Renault Zoe. It enables the Zoe, depending on the version and adapters you order, to be plugged into domestic household sockets as well as CEE 16A camping sockets (3 pin, blue) and CEE 32A powersockets (3 pin, blue but bigger). You can also change that last plug on the 32A version with a 5 pin CEE32A (red) plug yourself if needed (but it won’t fit in the respective adapters then), there are plugs available that are very easy (without tools) to disconnect and connect.

    First a picture to explain what you get and what can go where:

    EVR01
    Original resolution at: http://piloot.smugmug.com/Cars/Zoe/Zoe-Intens/i-cqL2LFT/0/O/EVR01.jpg

    On the right you can see the main EVR01 unit (32A version), on the left two adapters.

    First about the main unit. There are two versions of the EVR01. The cheapest version is 450 euros and has a 16A 3-pin plug. So it can plug straight into sockets you find at campings (usually blue), you can also simply replace a standard socket at home with a 3 pin socket (very cheap). The advantage is that a socket like that can easily withstand the build up of heat over time, so you can set the charger at 16 amp. For 480 euros you can get the version which has a bigger plug that can go straight into a CEE 32A 3-pin socket. You can find these sockets often at companies that use heavy duty industrial equipment (in Holland usually the red 5 pins versions though, which are not compatible unless you change the plug). In the picture you see this version (EVR01-32A-T2). This version can be set to a max of 32 amps. The big 7 pin Mennekes plug goes straight into the Zoe. The EVR01 unit has an internal residual current protection (35mA) and overtemperature protection (70°C). The cable is (I believe) around 7.5 meters long.

    Then about the adaptors (either is 50 euro). In the picture you can see on the left two sockets for CEE 32A (5 holes). One converts to Schuko (the standard European plug) and has a circuit breaker built in that’s set to 10 amps. The other converts to 3 pin CEE 16A and has a circuit breaker built in that’s set to 16 amps. I’m pretty sure that Davide can also arrange a CEE 16A or CEE 32A to UK plug as well.

    To use it (I haven’t yet, still waiting for the Zoe) you plug it in, set the amp rating and then turn it on. A clear English manual is included. For the Zoe it is important to at least set it to 8 amps first, as the Zoe won’t charge at 6 amp. After that you can slowly increase the amperage, depending on the unit, socket and adaptor you’re using. To get the unit to charge with amps that are higher than for domestic plugs, you have to hold the button for longer than a second. If you would do this (for example set the unit at 13 amp) while plugged into a Schuko / UK domestic socket, the circuit breaker (10 amp) in the converter will trip (you can reset it by pushing it in). Although your fuse box at home might be rated at 16 amps, standard (Schuko at least) sockets are not designed to take so much amps continuously for a longer time. It can lead to melted sockets. If you want to set it up to 16 amps, replace the socket by a CEE16A 3-pin socket. Perhaps UK sockets have more flexibility so that the converter can be set higher, I’m sure Davide can answer that for you when you contact him (and perhaps someone can update this thread then). 8 amps is safe, 10 amps is possible, but you should check the temperature of the socket to be sure.

    Loading times:
    The Zoe is very inefficient for loading at lower amps. An overview for some loading times from empty (you can intrapolate between 13 and 30):
    – Domestic socket (Schuko), 8 amp, 50 % efficient: 30 hours
    – Domestic socket (Schuko), 10 amp, 70% efficient: 18 hours
    – CEE 16A 3 pin socket, 13 amps, 80% efficient: 11 hours
    – CEE 32A 5 pin socket, 30 amps, 80% efficient: 4.5 hours

    Because of the difference in efficiency it not only takes considerably longer at 8 amp, but it also almost twice as expensive compared to 13 amps and higher. In other words, it might be a good idea to install a 3 pin CEE 16A socket at granny.

    Davide can also ship interlocked sockets.

    Order and info via: davide@elpa.it

    Prices excluding VAT:
    EVR01-32A-T2 (it has CEE 32A blue monophase plug): 480€
    EVR01-16A-T1 (it has CEE 16A blue monophase plug): 450€
    10A limited Schuko adapter: 50€
    16A limited CEE 16A adapter (only for EVR01-32A): 50€
    32A interlocked socket: 40€
    16A interlocked socket: 40€
    Shipping to UE: 40€
    If I sell to EU companies I can invoice without VAT, otherwise I must add 21% italian VAT.
    Accepted payment:
    – Direct bank transfer to the ELPA sas IBAN: IT 59 J 03268 68720 000760 187080 – Swift/bic: SELBIT2BXXX – Bank’s name: Banca Sella ag. Chiusa S. Michele
    – Paypal. If you choose Paypal it takes 3.6%, so you must add this fee to the final price.
    Availability: all parts are in stock now.
    To order them he needs your name, address, nickname on Zoe forum, phone number, and order list.

    The setup I ordered (EVR01 with CEE 32A plug, adapter to CEE 16A and adapter to Schuko), plus shipping plus VAT over the total, came to a total of 750 euro.

    #3727

    Trevor Larkum
    Keymaster

    That’s very interesting info, Nosig, thanks.

    It’s complicated though – I can’t see many ICE drivers wanting to learn this stuff.

    #3732

    MITSCH
    Participant

    Thanks Nosig very much

    This is exactly what I’ve been about lately. Charging ZOE is not the same as charging a mobile phone. It can’t be-it requires daily transfer of considerable energy.
    You explain about melted sockets, while I’m concerned also about melted wire or even possibilty of fire. I intend to charge my EV in the garage (as most people I believe). Now the garage is not something electricians are very concerned about. I’ve added an extra socket for the car and with my father we used a thick cable-like the ones for electric heater. I hope this will work once I start using it.

    #3735

    Anonymous

    Thanks NoSig. I’m interested in the granny cable for use in emergencies, but I think I’ll wait to see how other UK owners get on with it before ordering one myself!

    #3737

    Nosig
    Participant

    SIMPLE VERSION:

    If you just want a “granny cable” to plug into a domestic plug and don’t care too much about the charge time, get the following via davide@elpa.it :

    EVR01-16A-T1 (it has CEE 16A blue monophase plug): 450€
    10A limited Schuko adapter: 50€ (I assume the UK adapter is similar)
    Shipping to UE: 40€

    Direct bank transfer to the ELPA sas IBAN: IT 59 J 03268 68720 000760 187080 – Swift/bic: SELBIT2BXXX – Bank’s name: Banca Sella ag. Chiusa S. Michele
    – Paypal. If you choose Paypal it takes 3.6%, so you must add this fee to the final price.
    Add VAT 21% to the total if you’re not a company

    That will enable the Zoe to plug into a regular socket. You plug it in, set it to 8A and turn it on. Charge from empty is then 30 hours. You can turn it up to 10A, charge is then 18 hours. But over an extended period check the temperature of the socket in that case.

    #3738

    Nosig
    Participant

    MITSCH, it’s best to make it a CEE 16A socket and not a regular one. The socket is the bottleneck, not the wire apparently. It will enable charging at 16A continuously (so around 9 hours instead of 18) without concern of melted sockets (and you also don’t need the adapter):
    CEE16A

    #3740

    Nosig
    Participant

    Deejay, you can already read a lot of French Zoe experiences with this EVR01 on the French forum if you like (translate with google translate works pretty good), there are multiple topics:
    http://renault-zoe.forumpro.fr/t1367-le-crd-cable-de-recharge-de-davide-r

    #3741

    MITSCH
    Participant

    Yes Nosig it became clear to me I need the CEE 16A socket after reading your post, so thanks again. I will change it.
    Can you explain the efficiency again: I was prepared for 10% loss because of heating of the battery and now you’ve added anoter 10% loss (probably because of heating of the socket and the cable).
    I can’t accept the 50% loss as I understand it would mean I consume 33kwH of electricity to charge 22kwh battery of ZOE. Luckily you say that using a CEE 16A socket is a simple and cheap way of achieving 16A continuously for 9 hours and therefore achieving 80% efficiency.

    #3742

    Nosig
    Participant

    Exactly. The Chameleon charger is very inefficient at low amps, I’m not sure why (there is a whole discussion on the French forum). I guess the rest of the power goes to heat, not sure.

    #3743

    Nosig
    Participant
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