View answers to some of the frequently asked questions we receive regarding electric vehicle charging solutions. Contact us for more information.
Can I simply charge my electric vehicle on a socket at home?
Basically yes, however normal household electricity outlets or their supply lines, as a rule, are not configured for such a continuous load. Therefore loading on a normal household socket should only occur in an emergency.
For normal charging at home we expressly recommend charging with charging column or wall charging station, i.e. Amtron that has been especially developed for this purpose. These are available with different charging capacities.
We recommend a charging solution with sufficient charging capacity reserves. Thus you will be equipped for the future and can more quickly, and above all safely, charge your vehicle.
How much will a full charge cost at home?
A full charge will cost as little as €2.00 by charging overnight at home using discounted night rate electricity. Please contact your supply company to find out more about night rate electricity tariffs.
How long does it take to charge an electric car at home?
Home charging - 6-8* hours
*Due to different types and battery sizes of electric cars, these times may vary.
Why do EV’s charge at different rates?
The rating marked on charge points is the maximum continuous rate of charge available to an electric vehicle from the charger.
The vehicles Battery Management System (BMS) continuously controls the rate during a charging session and dictates the rate of charge. The rate depends on a number of factors outside of the control of the charger.
The most common factors effecting the charging rate are:
What are the environmental benefits?
Electric cars offer a real opportunity to reduce the carbon output of the transport sector, as they emit zero exhaust pipe emissions. Most people will charge their cars at night when a higher proportion of electricity is generated from wind. The growth in the generation of electricity from renewable sources offers a route towards carbon free motoring.
How do I apply for the home charger grant?
The Government has announced a new grant of €600 towards the installation of a home charger unit from January 1st 2018. The grant is administered by the Sustainable Energy Authority of Ireland (SEAI). Details of the new grant scheme can be found at: https://www.seai.ie/grants/electric-vehicle-grants...
Is charging with power safe in all weather conditions?
Electric vehicles can even be safely charged in rainfall.
Do I have to always fully charge my vehicle?
No. You can charge your electric vehicle in accordance with your power requirement, and you can also interrupt this process at any time.
When charging can I see the charged amount of electricity?
Whether you can see the charged amount of electricity when charging depends on the respective charging system. As a rule the power is totalled on the meter of the charging column.
In an app appropriate for the charging system you can view the power per charging process.
How do I end the charging process?
The charging process can always be ended in the vehicle. Some systems can also be stopped through an app or by holding the RFID card that is used for authorization, in front of the column again.
What happens if I leave my electric vehicle on the charge box for several days?
The power flow is ended through an integrated charging management system automatically after full charge.
Are additional costs incurred or is damage incurred if I leave the vehicle connected to the power grid after full charge?
As a rule a lasting power connection after the complete charge, results in no cost or damage whatsoever.
In the future, the existing connection will even be usable for example to preheat the auto in winter, without drawing power from the rechargeable battery of the vehicle. In this case, costs would be incurred.
What types of plugs are there for electric vehicles?
Worldwide, overall three types of plugs are standardized by the IEC (International Electrotechnical Commission). For charging electric vehicles with alternating current. In Europe the so-called IEC Type 2 plug has been defined as the standard charging plug with which the driver can charge on 230 V, as well as on 400 V.
Starting in 2017 this will be used for all new vehicle models in Europe. This system was developed in Germany by MENNEKES.
From the time before agreement on a common plug connector there are still vehicles that are equipped with the so-called IEC Type 1 system. These are primarily vehicles from the far east or the USA.
In addition, you also encounter SCHUKO, CEE-Caravan and HPL connections that can only be used for charging on 230 V networks. Occasionally you still find CEE three-phase current plugs and socket for charging on 400 V AC. Due to the low capacity, charging on 230 V is associated with long charging times The complete charging of a 20 kWh rechargeable battery in this case takes almost six hours. It is faster to charge on 400 V AC. At a charging power of 22 kW, charging only takes 1 hour.
Charging with DC is even faster. At 500 V and 100 A charge current (50 kW) the 20 kWh rechargeable battery is full again in 20 minutes. The common standard for these connections is currently still being worked out. Consequently, different systems are still being used here, for example, the CHAde-MO system and the Combined Charging System (CCS) on the basis of the IEC type 2 plug system. The latter supports charging via alternating current, as well as fast charging via direct current, and is compatible with the current Type 2 standard system.
Can the charger be installed directly from the meter box outside, or does it have to be connected to the distribution box inside the house?
Whilst there are proposals to change the rules and allow home-owners install an EV charger and connect to the meter box on the outside wall, currently it must still be connected to the distribution box inside the house.
Should I have a site survey before the installation?
Generally for home EV installations, a site survey will not be required. We would first recommend speaking with a member of our technical team about your options. Following this, if our technician thinks a site assessment would be beneficial, we will organise this.
We would generally recommend all businesses conduct a site assessments prior to installation, as the process is more complex than a standard home EV charger installation.
Why use load management? What is the benefit of load management?
As electromobility on our roads continues to evolve, many electric vehicles need to be charged at the same time. This, in turn, poses challenges to the charging infrastructure for which MENNEKES offers suitable solutions.
So if in the future employees, customers and guests want to load from you, peak times will occur at which these charges take place. In these times, a corresponding amount of charging power should be available. To ensure that the energy supply is problem-free and reliable, intelligent load management is required. It guarantees operational safety and increases the availability of charging points.
As long as sufficient power is available for all connected vehicles, they can charge at full power. If the sum of the currents of all used charging points exceeds the specification of the maximum current value, the MENNEKES load management system intervenes.
The charging currents for the charging points used are reduced. It is ensured that the value of the adjustable minimum current is not undershot at each charging point. In this way, MENNEKES products guarantee high availability and operational safety.
In addition, so extremely expensive power peaks in the power supply can be avoided.
How does the MENNEKES load management work?
So that your charging systems can be integrated into the load management, they must be networked with the same so-called "Accounting Control Unit (ACU)".
An ACU thus serves as an interface between charging points and load management. It is located, for example, in the MENNEKES eMobility Gateway or in the "Smart" charging systems.
If sufficient power is available for the connected electric vehicles, no regulation is necessary.
The MENNEKES load management only intervenes in the charging currents of the individual charging points when the sum of the currents exceeds the maximum current set by you. This avoids power surges that can occur when many users want to load their vehicles at the same time.
In addition, the system also ensures that a configured minimum current is not undershot. This minimum current is permanently available to all connected vehicles.
The decor is very simple. The installer or technician enters three parameters via the password-protected web interface of our ACU:
The maximum current may be a freely selectable by the operator current value. For example, the rated fuse current in the power distribution for the common supply line of the charging points.
This maximum grid current applies to all connected charging points in total and will never be exceeded.
If, in addition to the charging stations, there are other consumers on the same supply, their consumption can be taken into account by reducing the grid connection current.
An external signal signals the demand of the secondary consumers. The system then distributes the reduced grid connection current. The load management ensures the operational safety of all connected devices.
The value of the minimum current is equally effective for all charging points. With this parameter the operator is able to adapt his charging infrastructure to the minimum current requirements of electric vehicles.
New functions of the MENNEKES load management?
Our capabilities give you the ability to automatically distribute the load across your networked charging infrastructure. This feature is important when B. have more charging points in operation, as you power is available.
The new feature automatically ensures that the occupied charging points are treated equally with respect to their power purchase. However, the system automatically recognizes the end of charging of a connected electric vehicle with the update.
If a loading end is detected, the management releases the previously required charging power again for other users, without the driver of the electric car has to intervene by pulling the plug. The released electricity is automatically distributed to the charging vehicles in the order of the connection times.
Once the connected vehicles have been charged, they can also be provided with power for further charging cycles at a later time.
Thus, the system always guarantees optimal utilization of the available total energy.
For local networking without an external backend, MENNEKES offers another new function. You define "VIP users" within your locally integrated user administration.
These form after your authorization a separate group with regard to the load management.
This group thus forms its own "control loop" and is treated in preference to the other users. For this reason, a meaningful ratio of users to VIP users is crucial. Experience has shown that only 20-30% of all permanent users should receive the VIP status. Thus you have z. For example, it is possible to set up exclusive parking spaces or to adapt the charging infrastructure to the individual needs of the users.
All networkable charging systems from MENNEKES can be integrated into the load management system:
It is also a mixed operation of these systems possible. These systems are all networked using the eMobility gateway.
The MENNEKES load management is integrated in every eMobility gateway and can be adjusted by the electrician. The load management system from MENNEKES can be retrofitted at any time if you already have a networked charging infrastructure.