zappi v1General zappi questions
- Which zappi do I need if my EV uses a type 1 connection?
- What if I want to fit the zappi to a feed that is rated at less than 32 amps?
- How long will it take to charge my car? (from 0% to full)
- Can zappi do V2G (“Vehicle to Grid”)
- Can you lock the zappi to stop any un-authorised use?
- Does the zappi require any RCD protection?
- How can I make sure my EV does not drain the battery when pre-conditioning?
- Isn’t there an extra pre-conditioning mode in zappi v1?
1. Which zappi do I need if my EV uses a type 1 connection?
If your EV uses the ‘Type 1’ connection then you will need to purchase an Untethered zappi which can be used with all Type 1&2 compatible vehicles using your own charge lead.
2. What if I want to fit the zappi to a feed that is rated at less than 32 amps?
No problem! There are two settings that can help you. GRID LIMIT- will protect your main incoming fuse using the grid CT. DEVICE LIMIT- Will stop you overloading the feed that zappi is directly connected to. Both settings are fully configurable by installer or end user at anytime.
3. How long will it take to charge my car? (from 0% to full)
Here are some typical EV charging times
|EV||1ph zappi||3ph zappi|
|Tesla Model 3 Long Range||11h45||7h45|
|Renault Zoé ZE50||8h30||3h|
4. Can zappi do V2G (“Vehicle to Grid”)
Vehicle to Grid (V2G) refers to the idea that the energy stored in the EV’s battery could be used to support the electricity grid to help balance generation and demand. This concept is still in the early research/trial stage with the Nissan Leaf, eNV200 and Mitsubishi Outlander being the only vehicles that support this concept – but using complex EV charging equipment, not a standard EV charger.
Like all standard “Mode 3” EV chargers, zappi relies on the EV’s onboard charger to take the power from the ac mains and convert this to dc power to charge the batteries. With all EV’s currently available, this onboard charger only works one way – so you can’t take energy out of the batteries and feed this back into the grid.
6. Does the zappi require any RCD protection?
No! The zappi 2 has an A-Type RCD with 6mA DC leakage protection built in meaning no requirement to fit an RCD elsewhere
7. How can I make sure my EV does not drain the battery when pre-conditioning?
The simple answer, is that you need to set a Timed Boost to coincide with the time when the EV will be pre-conditioning. This ensures that zappi is ready to supply power to the EV. This approach works for both zappi v1 and v2
8. Isn’t there an extra pre-conditioning mode in zappi v1?
In Zappi 1 an extra pre-conditioning feature was added however the added complexity has caused some confusion so we did not include it in zappi v2
The zappi v1 pre-conditioning feature has 3 modes: OFF / NORMAL / FULL POWER
– OFF – EV cannot draw power after “Charge complete”
– NORMAL – EV cannot draw power after “Charge complete” when in ECO+ mode, unless there is enough surplus generation power.
– FULL POWER – EV can always draw power after “Charge complete”
To make sure that your EV uses mains power for preconditioning and you have a zappi v1 then…
- set preconditioning mode to FULL POWER and
- set a Timed Boost to coincide with the preconditioning time.