Table of Contents

1. Basic Description

About this Document

The safety and installation instructions "Quick Start Guide" that come with the charging station includes quick installation procedure should be read first:

• Etrel_INCH_DUO_QuickStartGuide.pdf

• Etrel_INCH_DUO_QuickStartGuide_Figures.pdf

The document in front of you contains information on the physical layout of the INCH DUO charging station. As it is necessary to think in advance about the accompanying electrical works, basic information about them is also included.

More information about electrical works is available in the document “Electrical Installation Specifics”:

Etrel_INCH_DUO_Electrical_Installation_Specifics.pdf

All the documents are available in the installation manuals section, accessible from the INCH DUO product page, at the web page https://etrel.com/charging-solutions/inch-duo/

Site Preparation

Confirmation of Readiness

Before carrying out the installation, the client must confirm his readiness usually with a statement, that all the requirements for the preparation of the location and additional image material are met, which allows remote checking of compliance.

Access to Installation Site

An access to the location should be made possible to service vehicle for installation and servicing of charging stations.

Support During Installation

The responsible staff for both electricity installations and IT communications should be present on the location or available for immediate remote support.

External Factors

Installation cannot be carried out in the event of extremely rainy or snowy weather or other external factors that can prevent safe mounting, installation, and commissioning of charging stations. The charging station installation should be cancelled under such circumstances.

Instructions Validity

The client shall check with manufacturer for the latest valid version of instructions before the preparation of location(s) for installation of charging stations. Please make an inquiry with the point of contact at the retailer or manufacturer’s support of your charging station to request the latest instructions version when necessary.

Permits

Location and Building Permit

The charging station is a simple object and there is usually no need to acquire any building permits for its installation. If the installation site is a part of municipal property, consent of the relevant authorities must be acquired before the charging station can be installed. Installations must be performed in accordance with possible additional requirements of the national regulation.

Connection to the Grid

The charging station must be connected to the low-voltage electricity distribution network. No special permit is required to connect to an existing network behind the metering point. The connection can be done by any authorised electrician. Installations must be performed in accordance with possible additional requirements of the national regulation.

Parking Permits

Parking must be possible in the direct vicinity of the station and permitted by the operator or owner of the parking area. Estimated time for a full charge depends on the current state of the battery and the vehicle's charging power. Charging procedure usually takes between 30 minutes and up to 8 hours. Installations must be performed in accordance with possible additional requirements of the national regulation.

Location

Charging station should be installed in the vicinity of the parking spot that will be used to park and charge electric vehicles. They can have charging socket located in various positions. Consequently, cable length to connect EV and charging station is important.

The sufficient cable length to easily connect the electric vehicle with the charging station, regardless of where the EV’s charging socket is located, should be between 3 and 7 m and depends on the charging station location in comparison to parking spot. Shorter length cables are recommended as they are easier to handle.

Make sure that in a typical connection scenario there are no obstructions in the way of the charging cable. When in use, the charging cable should be laid so that it will not be stepped on, tripped over, or otherwise subjected to damage or stress.

Charging station should be mounted so that the plug of the charging station is located approximately 120 cm above the ground. This height enables averagely high user the easiest operation of charging station and connection of charging cable. It also provides best view and operation of the LCD screen.

Etrel INCH charging station and its components (cable, casing, LCD screen...) are developed to be installed in the outside area meaning that charging station is resilient to the external actors (UV rays, rain, snow, cold etc.). Installing it in the closed-up area, for example in garage, will prolong the lifespan of the charging station and keep it in a pristine condition for longer.

There is no function of ventilation implemented in the charging station.

Location of the charging station must meet the following criteria:

• The charging station must not be submersed in water or any other fluid and should not be installed in flood risk areas.

• The operational temperature of the charging station is between - 25°C and + 65°C.

For locations where the charging station will be exposed to direct sunlight and high ambient temperatures during the day, it is recommended to install protection from direct sunlight, otherwise the temperature inside the station may exceed 65°C.

Charging station must not be installed in explosion hazardous areas (EX zone).

Required Space

Basic installation of the charging station without arches requires an excavation of minimal dimensions of 550 mm x 420 mm (floor plan) and depth of 600 mm. If the charging station is installed together with two safety arches, dimensions of the required dimensions are approximately 800 mm x 550 mm. Please find more information in chapter Construction Works.

Charging Station Dimensions

Figure 1: INCH DUO dimensions

Additional information of charging station dimensions:

• The height of the charging station is 1343 mm.

• Basic dimensions of the station's base: 272 mm x 200 mm.

• Free space needed:

  • 50 mm in the back.

  • 150 mm on the left and right side.

  • 500 mm at the front (140 mm for opening the station doors and additional space to enable simple maintenance).

• Two air vents are built into the station, one on the top of the back side and another in the middle of the back side. Air vents must not be blocked or obstructed by other items or objects. When applicable, air vents must be protected from being covered with snow.

The charging station is equipped with standard sockets (Type 2 according to EN 61851 or EN 62196-2). Charging cables are not a part of the station's equipment. It is expected that the users carry charging cables in their vehicles.

EV parking places must be placed within the reach of the charging cable. Minimum length of the charging cable should be 2.5 m (in the case of the most optimal EV parking to charge on both sockets).

Content, Optional and Extra Equipment

The table below shows the optional and extra equipment that can be added to the charging station:

Tools

To execute the installation of charging station multiple tools are needed:

Utility knife,

• Screwdriver,

• Hex screwdriver,

• Self-adjusting crimping pliers for cables' end sleeves,

• Wire trippers and

• Cable rippers.

Figure 2: Equipment used for the installation of charging station

Possible Charging Station Placements

The placement of charging station into its environment must allow easy access to all electric vehicles for which the station is intended. The charging station can be installed on the pavement, parking lot, in a parking garage or elsewhere, considering the specific conditions of each of these placements. In all these placement options, the station can also be installed together with the safety arches.

Due to the station's service doors opening outwards, the space in front of the station (approximately 50 cm) needs to be free of any obstacles which could prevent the opening of service doors. Safety arches or car park barriers (or bollards) can be used to prevent direct contact of vehicles with the charging station.

Street (Pavement) Placing

The charging station must be placed so that it does not interfere with pedestrian mobility while providing EV charging services. When certain interference is unavoidable, the placement of the station should prioritise pedestrian safety and minimise the risks of tripping over charging cables or suffering collisions with the station. The charging station should be placed as close to the roadside curb as possible.

When the charging station is combined with safety arches, these need to be placed as close to the roadside curb as possible, while the station is moved further back from the roadside so that its back edge is aligned with the front side of the rear arches of the safety arches. The safety arches should be mounted at least 15 cm away from both sides of the station.

Parking Lot Placement

Single station

A single charging station is usually placed on one of the sides of the parking lot. The station must be placed in a way to enable simple and practical charging of two electric vehicles at the same time. The station should be placed in a medial position between two parking spaces, as close to them as allowed by the curb.

It is recommended to install safety arches to prevent any collisions with the station while parking the vehicle. Safety arches should be placed as close to the curb as possible, and the back edge of the station should be aligned with the front side of the rear poles of the safety arches. The safety arches must be mounted at least 15 cm away from both sides of the charging station to simplify any maintenance. If several charging stations are installed on the same parking lot, the stations should optimally cover two parking spaces each.

A pair of stations

Back-to-back placing of two charging stations can be used to place together a couple of charging stations, usually in the central position of the parking lot. Minimum distance between the rear sides of the two charging stations should be 50 mm.

It is strongly recommended to add safety arches to this placement. In this case, both charging stations can be placed inside a single pair of safety arches. They can serve four electric vehicles at the same time.

Parking Garage Placement

In the parking garage placement, the specific installation of supply cables needs to be considered. The cables are routed to the charging station from the bottom. In case of clustering of larger number of charging stations, considerations about the needed cables cross-section must be made.

Possible Parking Arrangements

The charging station INCH Duo enables two vehicles to charge at the same time, one on each charging spot. Accordingly, an appropriate number of parking places need to be maintained in the direct vicinity of the station.

Figure 3: Possible parking arrangements

1: Although possible, it is not recommended to have only one parking spot reserved for INCH Duo. 2 and 3: Possible arrangement of INCH Duo with two dedicated parking spots. 4. Different arrangements dependent on the location are possible.

Charging station INCH Duo does not have a cable. Users need to have their own cable. Standard cable length of 2.5 m should be taken into consideration when determining correct placement of charging station and parking space.

Both options (for the charging cable to be plugged at either the front or the rear end of the vehicle) should be considered. Each charging station can serve more than two parking spaces, however only two vehicles can charge at the same time.

Recommendations

Use street signs or special marking to designate special EV parking places, which should be easily distinguishable from conventional parking places.

When the national or municipal decrees do not determine otherwise, the parking spaces should be marked by a symbol denoting an electric vehicle, together with an explanatory sign that the parking space is reserved for electric vehicles only.

Car park barriers can be installed between the station and the parking place to ensure extra protection of the charging station. It is also recommended to install safety arches, which can be supplied by the manufacturer as an additional option.

The arrangement of parking places should be planned in a way to ensure simple use of the charging cable. Since there is yet no standard placement of the charging connector on the EV (it is usually placed either at the front or on one of the rear corners of the vehicle), each of these options must be considered. The user must be able to reach any of these positions with a standard-length charging cable.

The parking regime should be monitored to prevent other vehicles (with internal combustion engines) from parking on special EV parking places.

Provide a secure environment for EV users and prevent vandalism or theft:

• Install the station in a location where it can be clearly seen and easily monitored.

• Maintain a 24-hour security control of the station (from the charging infrastructure Control centre).

• Install sufficient lighting in the vicinity of the charging station to ensure better safety and improved user experience.

• Allow charging only for identified users. This means that only users who identify themselves with their RFID card (or via SMS messages where applicable) can use the charging station.

• Electrical work should be carried out by a professionally qualified person.

• Electrical installation must be performed in accordance with local laws and safety regulations. The diameter of the electrical conductor depends on its length, method of installation, etc. Up to 5 x 50 mm² cables can be used directly and customization with additional clamps is possible up to 5 x 95 mm². This must be determined by the contractor.

Grid Connection

The charging station can be connected directly to the electricity distribution network or to an existing electrical installation nearby. Supply power depends on the charging power of each socket (according to the configuration of the charging station).

The following supply power is required:

• 44 kW (64 A): 2 x three-phase charging spots, for each Type 2 socket is the maximum current 32 A per phase.

Supply power of the charging station must be dimensioned appropriately to enable simultaneous charging of two vehicles. Charging power of each charging spot can be limited in the settings of the charging station on the scale between 6 A and 32 A. The charging station can also be set up to allow local power management so that when two vehicles are connected at the same time, the available maximum power is divided between the two vehicles. Power management can also be setup for a cluster of charging stations.

In the execution phase of the grid connection project, the following requirements need to be met:

• Selectivity of the functioning of protection devices needs to be ensured:

  • The main overcurrent protection should be at least one class greater than the one used for the protection of the charging station or have a higher delay.

  • Differential protection (RCD) which is used in the charging station operates at a low current (ΔI 30 mA, without delay). The selectivity of this protection on the level of facility is achieved with a higher delay or a greater current differential.

• Five wires are routed to the station, including three phase wires, grounding wire, and the neutral wire (when connecting to an existing installation). For single phase connection (slow charging option), only one phase wire with sufficient diameter can be routed to the station, together with neutral and earthing conductor. Dimensioning of the wires is determined in the project documentation. Grounding wire must be connected to the main grounding busbar.

Own consumption of the charging station is dependent on the charging station configuration and is not higher than 20 W.

Connection to the Station Operator's Communication Network

The charging station uses network connection to communicate with the Control centre in order to cyclically send information about its status, perform identification of users (on the Control centre level), forward events that occur during its operation and execute billing for the services performed.

The connection also enables communication from the Control centre towards the charging station, which enables remote access to the station for needs of maintenance or remote control.

The charging station could require a connection to the station operator's WAN network (charging infrastructure control centre). To access the WAN network via an internet connection, some additional security requirements need to be observed. Network connection can be executed in several different ways:

• Direct connection to the station operator's WAN network. Connection can be established directly with a UTP cable or a fibre optic converter.

• Wireless connection. The station connects to an existing 2G/3G/4G mobile network with an GPRS/UMTS router built into the station.