What's Involved in Getting Started

There are 2 Components to our System

1. Switches and E-Meters. These are installed in your switch board for secure control of your Chargers

2. Control Application (EVamp). You create an Account in our Application where you Set-up your Sites and Chargers. The Chargers are then connected to your Switches and E-Meters.

System Over View

The EVamp Application provides a way for you to open your Chargers for Public Access. You do not need to be onsite or available for a customer to charge their vehicle and pay for the service. Free Access can also be granted where you have a need to do so.

You install Shelly Switch Devices in your switch board. These are securely controlled by our App. This removes the risk of someone simply charging for free.

As an option and recommended, if you wish to charge by kWh rather than by time, you can install a Shelly E-Meter. The reasons for this are covered below.

In our System Control Application (EVamp) you then create an account and set-up your Sites, Chargers and Users. Click here for more details on the application.

3-Phase Systems

Normally 11 or 22 Kw

Switch Components

3 Phase Relay with Amp Capacity for your Charger KW rating, 1 per Charger. eg 11kW Charger needs an Amp rating of 48 amps

Shelly Pro 1 , 2 or 3 (Relay only) - with enough Relay channels to switch all your Chargers on the one site.

Optional (Recommended)

Shelly Pro 3EM 120amp 1 per Charger or 1 device can be used for up to 3 Chargers by measuring just a single phase.

The utilisation of the Charger is more efficient if a Power Meter is added. The charge will end when the vehicle is fully charged or at a specified kWh.

Without the Power Meter - charging can only be controlled by time and billed assuming the vehicle is drawing the Charger maximum kWs. Different vehicles have different charge rates on AC charging and so billing will not be accurate.

Single Phase Systems

Between 2.2Kw & 7.4Kw

Switch Components

Single Phase Relay with Amp Capacity for your Charger KW rating, 1 per Charger. eg 7.4 Kw Charger needs an Amp rating of 36 amps.

Shelly Pro 1 , 2 or 3 (Relay only)- with enough Relay channels to switch all your Chargers on the one site.

For a single Charger the Shelly Pro EM (E-Meter) includes one Relay. If used the Shelly Pro 1 Relay is not required.

Optional (Recommended)

Shelly Pro EM 120amp 1 per Charger (includes one Relay). The Pro EM device has two E-Meters channels. It can message power for two Chargers.

Vehicle AC Charging Capacities

The rate at which a car will charge (kW) on AC power is not a simple calculation but is dependent on both the Charger capacity and car's onboard charging system capacity.

As a basic rule, most plug in hybrid vehicles (PHEVs) such as the Mitsubishi Outlander will charge at a maximum rate of 3.7kW, which will give you around 16km of range per hour charging.

Most full battery electric vehicles (BEVs) will charge at a rate between 7kW and 16 kW giving the driver between 32km to 64km of range per hour of charging.

New BMW, Porsche and Tesla model 3 and Y Vehicles, have an on board charging capacity of 11kWs. The Tesla model S and X will charge at 16kW. BYD Vehicles charge at 7kWs.

A common misunderstanding assumes the capacity of the Charger determines a car’s AC charging rate and not the the car’s onboard charger. If for example, a PHEV is connected to a 11kW Charger and the vehicle AC charging capacity is 3.7Kw, then 3.7Kw is the rate at which the car will be charged. Equally, if the vehicle charging capacity is 16kW and charger capacity is only 7kW, then the car will only charge at 7kW.

This is why we recommend using power meters in your set-up. Calculating the invoice amount only by time will mean, for some vehicles you will invoice too much and others too little.