INCH Physical Installation
Document version: 1.6
Document date: 22. 7. 2024
Table of Contents
- 1 Basic Description
- 1.1 About this Document
- 1.2 Site Preparation
- 1.2.1 Confirmation of Readiness
- 1.2.2 Access to Installation Site
- 1.2.3 Support During Installation
- 1.2.4 External Factors
- 1.2.5 Instructions Validity
- 1.3 Permits
- 1.3.1 Location and Building Permit
- 1.3.2 Connection to the Grid
- 1.3.3 Parking Permits
- 1.4 Location
- 1.4.1 Required Space
- 1.4.2 Charging Station Dimensions
- 1.5 Content, Optional and Extra Equipment
- 1.6 Tools
- 1.7 Possible Charging Station Placements
- 1.8 Recommendations
- 1.9 Grid Connection
- 2 CONSTRUCTION WORKS
- 3 INSTALLATION
- 4 Cable Management
- 5 Mounting of the Charging Station and Installation of Cables
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_QuickStartGuide.pdf
Etrel_INCH_QuickStartGuide_Figures.pdf
The document in front of you contains information on the physical layout of the INCH 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_Electrical_Installation_Specifics.pdf
All the documents are available in the installation manuals section, accessible from the INCH product page, at the web page https://etrel.com/charging-solutions/inch/
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
Charging station can be mounted on the wall or installed on the mounting pole. Mounting plate for installation on the wall is supplied with every INCH and mounting pole is additional component that can be ordered.
Basic installation of the charging station’s mounting pole without arches requires an excavation of minimal dimensions of 500 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 750 mm x 500 mm. Please find more information in chapter Construction Works.
Charging Station Dimensions
Figure 1: Charging station INCH dimensions
Additional considerations of dimensions:
Basic dimensions of the station: 450 mm x 270 mm x 135 mm
Free space needed:
150 mm on the right side
400 mm on the left side (where the maintenance door is)
500 mm at the front (space to enable simple operation and maintenance).
Charging station is equipped with standard socket (with/without shutters) or with charging cable and standard Type 2 vehicle connector (Type 2 according to EN 61851-1 or EN 62196-2). EV parking place must be placed within the reach of the charging cable.
Content, Optional and Extra Equipment
Charging station (with Type 2 cable or Type 2 socket (with/without shutters)),
Wall mounting bracket,
9 × wall plugs for securing the mounting bracket using screws to the wall,
9 × screws to mount the bracket to the wall,
Screws dimensions: 4.5 x 40 and 4.5 x 60 [mm],
Cable gland rubber seal for smaller cable dimensions,
*9 × wall spacers
*2 × keys to open charging station service doors,
*Hex key to open charging station maintenance doors,
Hex key dimensions: 2.5,
Installation bracket,
*Magnetic cable holder,
*INCH mounting pole,
*Underground anchoring structure,
*Safety arches / Protective railing,
*Etrel Load Guard device.
*Optional, depending on the purchased model.
Tools
To execute the installation of charging station multiple tools are needed:
Screwdriver PH1, PH2,
Hex screwdriver (if charging station without key lock on maintenance doors),
Utility knife,
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 to enable simple charging. 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 electric vehicle.
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 specific individual parking spots.
A pair of stations
Back-to-back placing of two charging stations can be used to place together two charging stations, usually in the central position of the parking lot. It is strongly recommended to add safety arches to this placement. In this case, both charging stations can be mounted on the same installation pole within one pair of safety arches.
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 or from the top. In case of clustering of larger number of charging stations, considerations about the needed cables cross-section must be made.
Possible Parking Arrangements
It is recommended that each INCH charging station to have dedicated parking spot.
Figure 3: Possible parking arrangements
1: Common arrangement, installation on pole with dedicated parking place. 2 and 3: Although possible, arrangement of two parking spots per one INCH charging station is not recommended. 4: Common arrangement, installation on wall with dedicated parking places.
Charging station INCH can be equipped with cable or with socket (with/without shutters). If it is equipped with a socket (with/without shutters), 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 one parking spaces, however only one vehicle 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. The parking regime should be monitored to prevent other vehicles (with internal combustion engines) from parking on special EV parking places.
Barriers can be installed between the station and the parking place to ensure extra protection. It is also recommended to install safety arches, which can be supplied 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.
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.
Consider maintaining 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 10 mm2 cables can be used directly. 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.
The following supply power is required:
22 kW (32 A): three-phase charging spots with cable or with socket (with/without shutters). The maximum charging current is 32 A per phase.
Supply cables must be dimensioned appropriately. Charging power can be limited in the settings of the charging station between 6 A and 32 A.
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.
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 towar